feat(exercises): add JSR-354 workshop exercises (part1–part3)

Introduce hands-on exercises with tests covering: * part1: MoneyExercises, ArithmeticExercises, RoundingExercises, FormattingExercises, ParsingExercises, IntegrationExercises * part2: CurrencyConversionExercises, MonetaryOperatorExercises, MonetaryQueryExercises, MonetaryContextExercises, RoundingStrategyExercises * part3: OrderExercises (end-to-end order workflow) Use incomplete production methods with TODOs and complete JUnit 5 tests (AssertJ only). Tests focus on observable behavior and avoid fragile assertions (e.g., no fixed FX rates). Ensure clear progression from basics to advanced concepts and final integration task.
2026-04-19 21:07:46 +02:00 · 2026-04-19 21:07:46 +02:00 · 21d835b9ca
commit 21d835b9ca
parent e83a9a5b93
31 changed files with 1943 additions and 0 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,2 @@
+*.bat text eol=crlf
+mvnw eol=lf
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,43 @@
+/target/
+/.gradle
+/build/
+!**/src/main/**/target/
+!**/src/test/**/target/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+# The following files are often generated by operating systems or desktop environments
+.DS_Store
+Thumbs.db
+
+# Eclipse and STS
+/.apt_generated
+/.classpath
+/.factorypath
+/.project
+/.settings
+/.springBeans
+/.sts4-cache
+
+# IntelliJ IDEA
+/.idea
+/*.iws
+/*.iml
+/*.ipr
+/out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+# NetBeans
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+nb-configuration.xml
+
+# VS Code
+/.vscode/
+
+# Moneta Exchange Rate Provider Cache
+/.resourceCache/
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.15/apache-maven-3.9.15-bin.zip
--- a/.sdkmanrc
+++ b/.sdkmanrc
@ -0,0 +1,3 @@
+# Enable auto-env through the sdkman_auto_env config
+# Add key=value pairs of SDKs to use below
+java=25.0.2-tem
--- a/295
+++ b/295
@ -0,0 +1,295 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+  if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+    actualDistributionDir="$distributionUrlNameMain"
+  fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+  # enable globbing to iterate over items
+  set +f
+  for dir in "$TMP_DOWNLOAD_DIR"/*; do
+    if [ -d "$dir" ]; then
+      if [ -f "$dir/bin/$MVN_CMD" ]; then
+        actualDistributionDir="$(basename "$dir")"
+        break
+      fi
+    fi
+  done
+  set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+  verbose "Contents of $TMP_DOWNLOAD_DIR:"
+  verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+  die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+    New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+  $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+  $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+  $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+  Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+    $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+    if (Test-Path -Path $testPath -PathType Leaf) {
+      $actualDistributionDir = $_.Name
+    }
+  }
+}
+
+if (!$actualDistributionDir) {
+  Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
--- a/pom.xml
+++ b/pom.xml
@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>swiss.fihlon.workshop.money</groupId>
+    <artifactId>money-currency-api-workshop</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>25</maven.compiler.source>
+        <maven.compiler.target>25</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>javax.money</groupId>
+            <artifactId>money-api</artifactId>
+            <version>1.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.javamoney.moneta</groupId>
+            <artifactId>moneta-core</artifactId>
+            <version>1.4.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.javamoney.moneta</groupId>
+            <artifactId>moneta-convert-ecb</artifactId>
+            <version>1.4.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.javamoney.moneta</groupId>
+            <artifactId>moneta-convert-imf</artifactId>
+            <version>1.4.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>5.14.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.27.7</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>
--- a/src/main/java/swiss/fihlon/workshop/money/part1/ArithmeticExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/ArithmeticExercises.java
@ -0,0 +1,65 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.MonetaryAmount;
+
+/**
+ * <p>Part 1 workshop exercises for arithmetic operations on monetary amounts using JSR-354.</p>
+ *
+ * <p>The exercises focus on performing calculations directly on monetary amounts instead of primitive numbers.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class ArithmeticExercises {
+
+    /**
+     * <p>Add two monetary amounts that use the same currency.</p>
+     *
+     * <p>Use monetary arithmetic and return the computed sum.</p>
+     *
+     * @param firstAmount the first amount
+     * @param secondAmount the second amount
+     * @return sum of both amounts in the same currency
+     */
+    public MonetaryAmount addAmounts(MonetaryAmount firstAmount, MonetaryAmount secondAmount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Subtract one monetary amount from another amount of the same currency.</p>
+     *
+     * <p>Use monetary arithmetic and return the computed difference.</p>
+     *
+     * @param minuend the amount to subtract from
+     * @param subtrahend the amount to subtract
+     * @return difference after subtraction in the same currency
+     */
+    public MonetaryAmount subtractAmounts(MonetaryAmount minuend, MonetaryAmount subtrahend) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Multiply a monetary amount by a numeric factor.</p>
+     *
+     * <p>Use monetary arithmetic and return the resulting amount.</p>
+     *
+     * @param amount the amount to multiply
+     * @param factor multiplication factor
+     * @return product amount in the same currency
+     */
+    public MonetaryAmount multiplyAmount(MonetaryAmount amount, int factor) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Compare two monetary amounts that use the same currency.</p>
+     *
+     * <p>Return {@code true} only when the first amount is greater than the second amount.</p>
+     *
+     * @param firstAmount first amount to compare
+     * @param secondAmount second amount to compare
+     * @return {@code true} if first amount is greater, otherwise {@code false}
+     */
+    public boolean compareAmounts(MonetaryAmount firstAmount, MonetaryAmount secondAmount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part1/FormattingExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/FormattingExercises.java
@ -0,0 +1,50 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.MonetaryAmount;
+
+/**
+ * <p>Part 1 workshop exercises for formatting monetary amounts using JSR-354.</p>
+ *
+ * <p>The exercises focus on locale-dependent representation of monetary amounts
+ * and demonstrate that formatting is separate from the monetary model.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class FormattingExercises {
+
+    /**
+     * <p>Format the given amount using Swiss German locale conventions.</p>
+     *
+     * <p>Use locale {@code de-CH} formatting rules.</p>
+     *
+     * @param amount the amount to format
+     * @return formatted amount string for Swiss German locale
+     */
+    public String formatSwissGerman(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Format the given amount using German locale conventions.</p>
+     *
+     * <p>Use locale {@code de-DE} formatting rules.</p>
+     *
+     * @param amount the amount to format
+     * @return formatted amount string for German locale
+     */
+    public String formatGerman(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Format the given amount using US locale conventions.</p>
+     *
+     * <p>Use locale {@code en-US} formatting rules.</p>
+     *
+     * @param amount the amount to format
+     * @return formatted amount string for US locale
+     */
+    public String formatUs(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part1/IntegrationExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/IntegrationExercises.java
@ -0,0 +1,27 @@
+package swiss.fihlon.workshop.money.part1;
+
+/**
+ * <p>Part 1 workshop exercises for combining parsing, arithmetic, rounding, and formatting with JSR-354.</p>
+ *
+ * <p>The exercises focus on applying the previously learned concepts in one coherent workflow.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class IntegrationExercises {
+
+    /**
+     * <p>Calculate the final price from a Swiss German formatted input amount.</p>
+     *
+     * <p>Parse the input using locale {@code de-CH}.</p>
+     *
+     * <p>Add shipping costs of {@code CHF 4.95} and subtract a discount of {@code CHF 2.00}.</p>
+     *
+     * <p>Apply default rounding and format the result using locale {@code de-CH}.</p>
+     *
+     * @param priceText input price text
+     * @return formatted final price text
+     */
+    public String calculateFinalPrice(String priceText) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part1/MoneyExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/MoneyExercises.java
@ -0,0 +1,54 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.CurrencyUnit;
+import javax.money.MonetaryAmount;
+
+/**
+ * <p>Part 1 workshop exercises for creating currencies and monetary amounts using JSR-354.</p>
+ *
+ * <p>The exercises focus on modeling money as a domain concept (amount and currency).</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class MoneyExercises {
+
+    /**
+     * <p>Create a {@link CurrencyUnit} for Swiss franc.</p>
+     * <p>Implement using the ISO currency code {@code CHF}.</p>
+     *
+     * @return Swiss franc currency unit ({@code CHF})
+     */
+    public CurrencyUnit createSwissFranc() {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a {@link MonetaryAmount} representing 19.95 Swiss francs.</p>
+     * <p>Use currency code {@code CHF} and preserve the decimal value exactly.</p>
+     *
+     * @return monetary amount {@code 19.95 CHF}
+     */
+    public MonetaryAmount createSwissFrancAmount() {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a {@link MonetaryAmount} representing 2500 Japanese yen.</p>
+     * <p>Use currency code {@code JPY} and note that yen commonly has no fraction digits.</p>
+     *
+     * @return monetary amount {@code 2500 JPY}
+     */
+    public MonetaryAmount createJapaneseYenAmount() {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a {@link MonetaryAmount} representing 12.345 Tunisian dinar.</p>
+     * <p>Use currency code {@code TND} and keep all three fraction digits.</p>
+     *
+     * @return monetary amount {@code 12.345 TND}
+     */
+    public MonetaryAmount createTunisianDinarAmount() {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part1/ParsingExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/ParsingExercises.java
@ -0,0 +1,66 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.MonetaryAmount;
+import java.util.Locale;
+
+/**
+ * <p>Part 1 workshop exercises for parsing monetary amounts using JSR-354.</p>
+ *
+ * <p>The exercises focus on converting textual representations into monetary amounts
+ * using locale-specific parsing rules.</p>
+ *
+ * <p>The exercises demonstrate that parsing depends on the locale and must match the expected format.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class ParsingExercises {
+
+    /**
+     * <p>Parse a monetary amount string using Swiss German locale conventions.</p>
+     *
+     * <p>Use locale {@code de-CH} parsing rules.</p>
+     *
+     * @param text the input text to parse
+     * @return parsed monetary amount
+     */
+    public MonetaryAmount parseSwissGerman(String text) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Parse a monetary amount string using German locale conventions.</p>
+     *
+     * <p>Use locale {@code de-DE} parsing rules.</p>
+     *
+     * @param text the input text to parse
+     * @return parsed monetary amount
+     */
+    public MonetaryAmount parseGerman(String text) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Parse a monetary amount string using US locale conventions.</p>
+     *
+     * <p>Use locale {@code en-US} parsing rules.</p>
+     *
+     * @param text the input text to parse
+     * @return parsed monetary amount
+     */
+    public MonetaryAmount parseUs(String text) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Try to parse an input text with the given locale and indicate whether parsing succeeds.</p>
+     *
+     * <p>Return {@code false} if parsing fails due to mismatched format or locale.</p>
+     *
+     * @param text the input text to parse
+     * @param locale the locale used for parsing
+     * @return {@code true} if parsing succeeds, otherwise {@code false}
+     */
+    public boolean parseInvalidInput(String text, Locale locale) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part1/RoundingExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part1/RoundingExercises.java
@ -0,0 +1,38 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.MonetaryAmount;
+
+/**
+ * <p>Part 1 workshop exercises for currency-aware rounding with JSR-354.</p>
+ *
+ * <p>The exercises focus on explicit, currency-dependent rounding as part of domain logic.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class RoundingExercises {
+
+    /**
+     * <p>Apply the default rounding for the currency of the given amount.</p>
+     *
+     * <p>Use the rounding rules defined by the currency.</p>
+     *
+     * @param amount the amount to round
+     * @return rounded amount
+     */
+    public MonetaryAmount applyDefaultRounding(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Divide the given amount by an integer and apply default currency rounding.</p>
+     *
+     * <p>Perform rounding as an explicit step after division.</p>
+     *
+     * @param amount the amount to divide
+     * @param divisor the integer divisor
+     * @return divided and rounded amount
+     */
+    public MonetaryAmount divideAndRound(MonetaryAmount amount, int divisor) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part2/CurrencyConversionExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part2/CurrencyConversionExercises.java
@ -0,0 +1,63 @@
+package swiss.fihlon.workshop.money.part2;
+
+import java.time.LocalDateTime;
+import javax.money.MonetaryAmount;
+import javax.money.convert.CurrencyConversion;
+
+/**
+ * <p>Part 2 workshop exercises for currency conversion using JSR-354.</p>
+ *
+ * <p>The exercises focus on obtaining conversions from providers and applying them to monetary amounts.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class CurrencyConversionExercises {
+
+    /**
+     * <p>Create a currency conversion to EUR using a conversion provider.</p>
+     *
+     * <p>Use a provider such as {@code ECB}.</p>
+     *
+     * @return currency conversion to EUR
+     */
+    public CurrencyConversion getEurConversion() {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Convert a CHF amount to EUR using a currency conversion.</p>
+     *
+     * <p>Use JSR-354 conversion APIs and return the converted amount.</p>
+     *
+     * @param amount amount in CHF
+     * @return converted amount in EUR
+     */
+    public MonetaryAmount convertChfToEur(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a currency conversion to EUR using a timestamp-based conversion query.</p>
+     *
+     * <p>Include the given {@link LocalDateTime} in the query.</p>
+     *
+     * @param timestamp timestamp used in the conversion query
+     * @return currency conversion to EUR for the given timestamp
+     */
+    public CurrencyConversion getEurConversionForTimestamp(LocalDateTime timestamp) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Convert a CHF amount to EUR using a timestamp-based conversion query.</p>
+     *
+     * <p>Build the conversion query with the given timestamp and return the converted amount.</p>
+     *
+     * @param amount amount in CHF
+     * @param timestamp timestamp used in the conversion query
+     * @return converted amount in EUR
+     */
+    public MonetaryAmount convertChfToEurAt(MonetaryAmount amount, LocalDateTime timestamp) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryContextExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryContextExercises.java
@ -0,0 +1,64 @@
+package swiss.fihlon.workshop.money.part2;
+
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryContext;
+
+/**
+ * <p>Part 2 workshop exercises for understanding the role of MonetaryContext in JSR-354.</p>
+ *
+ * <p>The exercises focus on how context influences the behavior of monetary amounts,
+ * such as precision and maximum scale.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class MonetaryContextExercises {
+
+    /**
+     * <p>Return the monetary context of the given amount.</p>
+     *
+     * <p>Use the JSR-354 context API.</p>
+     *
+     * @param amount amount whose context should be returned
+     * @return monetary context of the amount
+     */
+    public MonetaryContext getMonetaryContext(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Return the maximum scale from the monetary context of the given amount.</p>
+     *
+     * <p>Use context metadata to read the maximum scale of the implementation.</p>
+     *
+     * @param amount amount whose maximum scale should be returned
+     * @return maximum scale from the monetary context
+     */
+    public int getMaxScale(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Compare the monetary contexts of two amounts.</p>
+     *
+     * <p>Return whether both contexts are equal.</p>
+     *
+     * @param firstAmount first amount
+     * @param secondAmount second amount
+     * @return {@code true} if both contexts are equal, otherwise {@code false}
+     */
+    public boolean compareContexts(MonetaryAmount firstAmount, MonetaryAmount secondAmount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a context description string for the given amount.</p>
+     *
+     * <p>Include precision and max scale in the format {@code precision=..., maxScale=...}.</p>
+     *
+     * @param amount amount whose context should be described
+     * @return formatted context description
+     */
+    public String describeContext(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryOperatorExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryOperatorExercises.java
@ -0,0 +1,61 @@
+package swiss.fihlon.workshop.money.part2;
+
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryOperator;
+
+/**
+ * <p>Part 2 workshop exercises for encapsulating domain logic with MonetaryOperator.</p>
+ *
+ * <p>The exercises focus on applying reusable monetary operations such as discounts and VAT.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class MonetaryOperatorExercises {
+
+    /**
+     * <p>Apply a 10% discount to the given amount using a monetary operator.</p>
+     *
+     * <p>Apply the operator with {@code with(...)}.</p>
+     *
+     * @param amount amount to discount
+     * @return discounted amount
+     */
+    public MonetaryAmount applyDiscount(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Apply 7.7% VAT to the given amount using a monetary operator.</p>
+     *
+     * <p>Apply the operator with {@code with(...)}.</p>
+     *
+     * @param amount amount before VAT
+     * @return amount after VAT
+     */
+    public MonetaryAmount applyVat(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Apply a 10% discount and then 7.7% VAT using monetary operators.</p>
+     *
+     * <p>Apply both operators in sequence with {@code with(...)}.</p>
+     *
+     * @param amount original amount
+     * @return amount after discount and VAT
+     */
+    public MonetaryAmount applyDiscountThenVat(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a reusable 10% discount monetary operator.</p>
+     *
+     * <p>Apply the returned operator to amounts with {@code with(...)}.</p>
+     *
+     * @return reusable discount operator
+     */
+    public MonetaryOperator createDiscountOperator() {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryQueryExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part2/MonetaryQueryExercises.java
@ -0,0 +1,62 @@
+package swiss.fihlon.workshop.money.part2;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryQuery;
+
+/**
+ * <p>Part 2 workshop exercises for extracting information from monetary amounts with MonetaryQuery.</p>
+ *
+ * <p>The exercises focus on encapsulating reusable query logic for monetary values and currencies.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class MonetaryQueryExercises {
+
+    /**
+     * <p>Extract the currency code from the given amount using a monetary query.</p>
+     *
+     * <p>Apply the query with {@code query(...)}.</p>
+     *
+     * @param amount amount to query
+     * @return currency code
+     */
+    public String queryCurrencyCode(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Extract the default fraction digits from the given amount using a monetary query.</p>
+     *
+     * <p>Apply the query with {@code query(...)}.</p>
+     *
+     * @param amount amount to query
+     * @return default fraction digits of the currency
+     */
+    public int queryDefaultFractionDigits(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Extract the numeric value from the given amount as {@link BigDecimal} using a monetary query.</p>
+     *
+     * <p>Apply the query with {@code query(...)}.</p>
+     *
+     * @param amount amount to query
+     * @return numeric value as BigDecimal
+     */
+    public BigDecimal queryNumberAsBigDecimal(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a reusable monetary query that extracts a currency code.</p>
+     *
+     * <p>Return the query so it can be applied to different amounts.</p>
+     *
+     * @return reusable query returning a currency code
+     */
+    public MonetaryQuery<String> createCurrencyCodeQuery() {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part2/RoundingStrategyExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part2/RoundingStrategyExercises.java
@ -0,0 +1,61 @@
+package swiss.fihlon.workshop.money.part2;
+
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryOperator;
+
+/**
+ * <p>Part 2 workshop exercises for applying different rounding strategies with JSR-354.</p>
+ *
+ * <p>The exercises focus on treating rounding as an explicit domain decision that depends on the use case.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class RoundingStrategyExercises {
+
+    /**
+     * <p>Apply the default currency rounding to the given amount.</p>
+     *
+     * <p>Use JSR-354 rounding APIs and return the rounded value.</p>
+     *
+     * @param amount amount to round
+     * @return amount rounded with default currency rounding
+     */
+    public MonetaryAmount applyDefaultRounding(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Apply explicit default rounding to a VAT amount.</p>
+     *
+     * <p>Use rounding as a separate, explicit step.</p>
+     *
+     * @param taxAmount tax amount to round
+     * @return rounded tax amount
+     */
+    public MonetaryAmount roundVatAmount(MonetaryAmount taxAmount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Apply Swiss cash rounding to the nearest 0.05 for CHF amounts.</p>
+     *
+     * <p>Return the rounded amount after applying the cash rounding rule.</p>
+     *
+     * @param amount CHF amount to cash-round
+     * @return CHF amount rounded to the nearest 0.05
+     */
+    public MonetaryAmount applySwissCashRounding(MonetaryAmount amount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Create a reusable monetary operator for Swiss cash rounding.</p>
+     *
+     * <p>The operator rounds CHF amounts to the nearest 0.05.</p>
+     *
+     * @return reusable Swiss cash rounding operator
+     */
+    public MonetaryOperator createSwissCashRounding() {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/main/java/swiss/fihlon/workshop/money/part3/OrderExercises.java
+++ b/src/main/java/swiss/fihlon/workshop/money/part3/OrderExercises.java
@ -0,0 +1,89 @@
+package swiss.fihlon.workshop.money.part3;
+
+import javax.money.CurrencyUnit;
+import javax.money.MonetaryAmount;
+
+/**
+ * <p>Part 3 workshop exercises for integrating monetary calculations into a small order workflow.</p>
+ *
+ * <p>The exercises focus on combining subtotal calculation, discount, VAT, rounding, and formatting.</p>
+ *
+ * <p>The methods are intentionally incomplete and should be implemented by making tests pass.</p>
+ */
+public class OrderExercises {
+
+    /**
+     * <p>Calculate the subtotal by multiplying unit price with quantity.</p>
+     *
+     * <p>Use monetary multiplication and return the subtotal in CHF.</p>
+     *
+     * @param unitPrice unit price in CHF
+     * @param quantity quantity to multiply
+     * @return subtotal amount
+     */
+    public MonetaryAmount calculateSubtotal(MonetaryAmount unitPrice, int quantity) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Apply a 10% discount to the given subtotal using a monetary operator.</p>
+     *
+     * <p>Return the discounted amount.</p>
+     *
+     * @param subtotal subtotal before discount
+     * @return discounted amount
+     */
+    public MonetaryAmount applyDiscount(MonetaryAmount subtotal) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Calculate the VAT-inclusive amount by applying 7.7% VAT to the given discounted amount.</p>
+     *
+     * <p>Apply default currency rounding as an explicit step and return the VAT-inclusive amount.</p>
+     *
+     * @param discountedAmount amount after discount
+     * @return VAT-inclusive amount
+     */
+    public MonetaryAmount applyVat(MonetaryAmount discountedAmount) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Calculate the final total from unit price and quantity.</p>
+     *
+     * <p>Combine subtotal calculation, discount application, and VAT calculation.</p>
+     *
+     * @param unitPrice unit price in CHF
+     * @param quantity quantity to multiply
+     * @return final total amount
+     */
+    public MonetaryAmount calculateTotal(MonetaryAmount unitPrice, int quantity) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Format the given total amount using Swiss German locale conventions.</p>
+     *
+     * <p>Use locale {@code de-CH} and return the formatted amount string.</p>
+     *
+     * @param total total amount to format
+     * @return formatted total string
+     */
+    public String formatTotal(MonetaryAmount total) {
+        throw new UnsupportedOperationException("TODO");
+    }
+
+    /**
+     * <p>Convert the given amount to the specified target currency.</p>
+     *
+     * <p>Use a currency conversion and return the converted amount.</p>
+     *
+     * @param amount amount to convert
+     * @param targetCurrency target currency
+     * @return amount converted to the target currency
+     */
+    public MonetaryAmount convertToCurrency(MonetaryAmount amount, CurrencyUnit targetCurrency) {
+        throw new UnsupportedOperationException("TODO");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/ArithmeticExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/ArithmeticExercisesTest.java
@ -0,0 +1,72 @@
+package swiss.fihlon.workshop.money.part1;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ArithmeticExercisesTest {
+
+    private final ArithmeticExercises exercises = new ArithmeticExercises();
+
+    @Test
+    void shouldAddAmountsWithSameCurrency() {
+        MonetaryAmount first = Money.of(19.95, "CHF");
+        MonetaryAmount second = Money.of(5.05, "CHF");
+
+        MonetaryAmount result = exercises.addAmounts(first, second);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("25.00");
+    }
+
+    @Test
+    void shouldSubtractAmountsWithSameCurrency() {
+        MonetaryAmount minuend = Money.of(20.00, "CHF");
+        MonetaryAmount subtrahend = Money.of(3.50, "CHF");
+
+        MonetaryAmount result = exercises.subtractAmounts(minuend, subtrahend);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("16.50");
+    }
+
+    @Test
+    void shouldMultiplyAmountByFactor() {
+        MonetaryAmount amount = Money.of(12.30, "CHF");
+
+        MonetaryAmount result = exercises.multiplyAmount(amount, 3);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("36.90");
+    }
+
+    @Test
+    void shouldReturnTrueWhenFirstAmountIsGreater() {
+        MonetaryAmount higher = Money.of(10.00, "CHF");
+        MonetaryAmount lower = Money.of(9.99, "CHF");
+
+        assertThat(exercises.compareAmounts(higher, lower)).isTrue();
+    }
+
+    @Test
+    void shouldReturnFalseWhenFirstAmountIsSmaller() {
+        MonetaryAmount lower = Money.of(9.99, "CHF");
+        MonetaryAmount higher = Money.of(10.00, "CHF");
+
+        assertThat(exercises.compareAmounts(lower, higher)).isFalse();
+    }
+
+    @Test
+    void shouldReturnFalseWhenAmountsAreEqual() {
+        MonetaryAmount first = Money.of(10.00, "CHF");
+        MonetaryAmount second = Money.of(10.00, "CHF");
+
+        assertThat(exercises.compareAmounts(first, second)).isFalse();
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/FormattingExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/FormattingExercisesTest.java
@ -0,0 +1,39 @@
+package swiss.fihlon.workshop.money.part1;
+
+import javax.money.MonetaryAmount;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class FormattingExercisesTest {
+
+    private final FormattingExercises exercises = new FormattingExercises();
+
+    @Test
+    void shouldFormatSwissGerman() {
+        MonetaryAmount amount = Money.of(1234.56, "CHF");
+
+        String result = exercises.formatSwissGerman(amount);
+
+        assertThat(result).isEqualTo("CHF 1’234.56");
+    }
+
+    @Test
+    void shouldFormatGerman() {
+        MonetaryAmount amount = Money.of(1234.56, "CHF");
+
+        String result = exercises.formatGerman(amount);
+
+        assertThat(result).isEqualTo("1.234,56 CHF");
+    }
+
+    @Test
+    void shouldFormatUs() {
+        MonetaryAmount amount = Money.of(1234.56, "CHF");
+
+        String result = exercises.formatUs(amount);
+
+        assertThat(result).isEqualTo("CHF1,234.56");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/IntegrationExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/IntegrationExercisesTest.java
@ -0,0 +1,17 @@
+package swiss.fihlon.workshop.money.part1;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class IntegrationExercisesTest {
+
+    private final IntegrationExercises exercises = new IntegrationExercises();
+
+    @Test
+    void shouldCalculateFinalPrice() {
+        String result = exercises.calculateFinalPrice("CHF 19.95");
+
+        assertThat(result).isEqualTo("CHF 22.90");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/MoneyExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/MoneyExercisesTest.java
@ -0,0 +1,48 @@
+package swiss.fihlon.workshop.money.part1;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class MoneyExercisesTest {
+
+    private final MoneyExercises exercises = new MoneyExercises();
+
+    @Test
+    void shouldCreateSwissFranc() {
+        var currency = exercises.createSwissFranc();
+
+        assertThat(currency).isNotNull();
+        assertThat(currency.getCurrencyCode()).isEqualTo("CHF");
+        assertThat(currency.getDefaultFractionDigits()).isEqualTo(2);
+    }
+
+    @Test
+    void shouldCreateSwissFrancAmount() {
+        MonetaryAmount amount = exercises.createSwissFrancAmount();
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("19.95");
+    }
+
+    @Test
+    void shouldCreateJapaneseYenAmount() {
+        MonetaryAmount amount = exercises.createJapaneseYenAmount();
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("JPY");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("2500");
+    }
+
+    @Test
+    void shouldCreateTunisianDinarAmount() {
+        MonetaryAmount amount = exercises.createTunisianDinarAmount();
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("TND");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("12.345");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/ParsingExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/ParsingExercisesTest.java
@ -0,0 +1,47 @@
+package swiss.fihlon.workshop.money.part1;
+
+import java.math.BigDecimal;
+import java.util.Locale;
+import javax.money.MonetaryAmount;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ParsingExercisesTest {
+
+    private final ParsingExercises exercises = new ParsingExercises();
+
+    @Test
+    void shouldParseSwissGermanAmount() {
+        MonetaryAmount amount = exercises.parseSwissGerman("CHF 1’234.56");
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("1234.56");
+    }
+
+    @Test
+    void shouldParseGermanAmount() {
+        MonetaryAmount amount = exercises.parseGerman("1.234,56 CHF");
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("1234.56");
+    }
+
+    @Test
+    void shouldParseUsAmount() {
+        MonetaryAmount amount = exercises.parseUs("CHF1,234.56");
+
+        assertThat(amount).isNotNull();
+        assertThat(amount.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(amount.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("1234.56");
+    }
+
+    @Test
+    void shouldReturnFalseForInvalidInputInGivenLocale() {
+        boolean parsingSucceeded = exercises.parseInvalidInput("1.234,56 CHF", Locale.forLanguageTag("de-CH"));
+
+        assertThat(parsingSucceeded).isFalse();
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part1/RoundingExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part1/RoundingExercisesTest.java
@ -0,0 +1,57 @@
+package swiss.fihlon.workshop.money.part1;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RoundingExercisesTest {
+
+    private final RoundingExercises exercises = new RoundingExercises();
+
+    @Test
+    void shouldApplyDefaultRoundingToSwissFranc() {
+        MonetaryAmount amount = Money.of(3.3333, "CHF");
+
+        MonetaryAmount result = exercises.applyDefaultRounding(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("3.33");
+    }
+
+    @Test
+    void shouldApplyDefaultRoundingToJapaneseYen() {
+        MonetaryAmount amount = Money.of(123.45, "JPY");
+
+        MonetaryAmount result = exercises.applyDefaultRounding(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("JPY");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("123");
+    }
+
+    @Test
+    void shouldApplyDefaultRoundingToTunisianDinar() {
+        MonetaryAmount amount = Money.of(12.3456, "TND");
+
+        MonetaryAmount result = exercises.applyDefaultRounding(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("TND");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("12.346");
+    }
+
+    @Test
+    void shouldDivideAndRoundSwissFranc() {
+        MonetaryAmount amount = Money.of(10.00, "CHF");
+
+        MonetaryAmount result = exercises.divideAndRound(amount, 3);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("3.33");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part2/CurrencyConversionExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part2/CurrencyConversionExercisesTest.java
@ -0,0 +1,53 @@
+package swiss.fihlon.workshop.money.part2;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.time.LocalDateTime;
+import javax.money.MonetaryAmount;
+import javax.money.convert.CurrencyConversion;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+class CurrencyConversionExercisesTest {
+
+    private final CurrencyConversionExercises exercises = new CurrencyConversionExercises();
+
+    @Test
+    void shouldCreateEurConversion() {
+        CurrencyConversion conversion = exercises.getEurConversion();
+
+        assertThat(conversion).isNotNull();
+        assertThat(conversion.getCurrency().getCurrencyCode()).isEqualTo("EUR");
+    }
+
+    @Test
+    void shouldConvertChfToEur() {
+        MonetaryAmount chfAmount = Money.of(10, "CHF");
+
+        MonetaryAmount result = exercises.convertChfToEur(chfAmount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("EUR");
+    }
+
+    @Test
+    void shouldCreateEurConversionForTimestamp() {
+        LocalDateTime timestamp = LocalDateTime.of(2024, 1, 15, 10, 30);
+
+        CurrencyConversion conversion = exercises.getEurConversionForTimestamp(timestamp);
+
+        assertThat(conversion).isNotNull();
+        assertThat(conversion.getCurrency().getCurrencyCode()).isEqualTo("EUR");
+    }
+
+    @Test
+    void shouldConvertChfToEurAtTimestamp() {
+        MonetaryAmount chfAmount = Money.of(10, "CHF");
+        LocalDateTime timestamp = LocalDateTime.of(2024, 1, 15, 10, 30);
+
+        MonetaryAmount result = exercises.convertChfToEurAt(chfAmount, timestamp);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("EUR");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryContextExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryContextExercisesTest.java
@ -0,0 +1,63 @@
+package swiss.fihlon.workshop.money.part2;
+
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryContext;
+import org.javamoney.moneta.FastMoney;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class MonetaryContextExercisesTest {
+
+    private final MonetaryContextExercises exercises = new MonetaryContextExercises();
+
+    @Test
+    void shouldReturnMonetaryContext() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+
+        MonetaryContext result = exercises.getMonetaryContext(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result).isEqualTo(amount.getContext());
+    }
+
+    @Test
+    void shouldReturnMaxScaleFromMonetaryContext() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+
+        int result = exercises.getMaxScale(amount);
+
+        assertThat(result).isEqualTo(amount.getContext().getMaxScale());
+    }
+
+    @Test
+    void shouldReturnTrueWhenContextsAreFromSameImplementation() {
+        MonetaryAmount firstAmount = Money.of(10, "CHF");
+        MonetaryAmount secondAmount = Money.of(25.50, "EUR");
+
+        boolean result = exercises.compareContexts(firstAmount, secondAmount);
+
+        assertThat(result).isTrue();
+    }
+
+    @Test
+    void shouldReturnFalseWhenContextsAreFromDifferentImplementations() {
+        MonetaryAmount firstAmount = Money.of(10, "CHF");
+        MonetaryAmount secondAmount = FastMoney.of(10, "CHF");
+
+        boolean result = exercises.compareContexts(firstAmount, secondAmount);
+
+        assertThat(result).isFalse();
+    }
+
+    @Test
+    void shouldDescribeContextWithPrecisionAndMaxScale() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+        MonetaryContext context = amount.getContext();
+
+        String result = exercises.describeContext(amount);
+
+        assertThat(result).isEqualTo("precision=" + context.getPrecision() + ", maxScale=" + context.getMaxScale());
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryOperatorExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryOperatorExercisesTest.java
@ -0,0 +1,62 @@
+package swiss.fihlon.workshop.money.part2;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryOperator;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class MonetaryOperatorExercisesTest {
+
+    private final MonetaryOperatorExercises exercises = new MonetaryOperatorExercises();
+
+    @Test
+    void shouldApplyDiscount() {
+        MonetaryAmount amount = Money.of(100, "CHF");
+
+        MonetaryAmount result = exercises.applyDiscount(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("90.00");
+    }
+
+    @Test
+    void shouldApplyVat() {
+        MonetaryAmount amount = Money.of(100, "CHF");
+
+        MonetaryAmount result = exercises.applyVat(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("107.70");
+    }
+
+    @Test
+    void shouldApplyDiscountThenVat() {
+        MonetaryAmount amount = Money.of(100, "CHF");
+
+        MonetaryAmount result = exercises.applyDiscountThenVat(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("96.93");
+    }
+
+    @Test
+    void shouldCreateReusableDiscountOperator() {
+        MonetaryAmount firstAmount = Money.of(50, "CHF");
+        MonetaryAmount secondAmount = Money.of(20, "CHF");
+        MonetaryOperator discountOperator = exercises.createDiscountOperator();
+
+        MonetaryAmount firstResult = firstAmount.with(discountOperator);
+        MonetaryAmount secondResult = secondAmount.with(discountOperator);
+
+        assertThat(firstResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(firstResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("45.00");
+        assertThat(secondResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(secondResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("18.00");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryQueryExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part2/MonetaryQueryExercisesTest.java
@ -0,0 +1,54 @@
+package swiss.fihlon.workshop.money.part2;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryQuery;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class MonetaryQueryExercisesTest {
+
+    private final MonetaryQueryExercises exercises = new MonetaryQueryExercises();
+
+    @Test
+    void shouldQueryCurrencyCode() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+
+        String result = exercises.queryCurrencyCode(amount);
+
+        assertThat(result).isEqualTo("CHF");
+    }
+
+    @Test
+    void shouldQueryDefaultFractionDigits() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+
+        int result = exercises.queryDefaultFractionDigits(amount);
+
+        assertThat(result).isEqualTo(2);
+    }
+
+    @Test
+    void shouldQueryNumberAsBigDecimal() {
+        MonetaryAmount amount = Money.of(19.95, "CHF");
+
+        BigDecimal result = exercises.queryNumberAsBigDecimal(amount);
+
+        assertThat(result).isEqualByComparingTo("19.95");
+    }
+
+    @Test
+    void shouldCreateReusableCurrencyCodeQuery() {
+        MonetaryAmount firstAmount = Money.of(10, "CHF");
+        MonetaryAmount secondAmount = Money.of(5.50, "CHF");
+
+        MonetaryQuery<String> query = exercises.createCurrencyCodeQuery();
+        String firstResult = firstAmount.query(query);
+        String secondResult = secondAmount.query(query);
+
+        assertThat(firstResult).isEqualTo("CHF");
+        assertThat(secondResult).isEqualTo("CHF");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part2/RoundingStrategyExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part2/RoundingStrategyExercisesTest.java
@ -0,0 +1,65 @@
+package swiss.fihlon.workshop.money.part2;
+
+import java.math.BigDecimal;
+import javax.money.MonetaryAmount;
+import javax.money.MonetaryOperator;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RoundingStrategyExercisesTest {
+
+    private final RoundingStrategyExercises exercises = new RoundingStrategyExercises();
+
+    @Test
+    void shouldApplyDefaultRounding() {
+        MonetaryAmount amount = Money.of(10.024, "CHF");
+
+        MonetaryAmount result = exercises.applyDefaultRounding(amount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("10.02");
+    }
+
+    @Test
+    void shouldRoundVatAmount() {
+        MonetaryAmount taxAmount = Money.of(1.537, "CHF");
+
+        MonetaryAmount result = exercises.roundVatAmount(taxAmount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("1.54");
+    }
+
+    @Test
+    void shouldApplySwissCashRounding() {
+        MonetaryAmount firstAmount = Money.of(10.02, "CHF");
+        MonetaryAmount secondAmount = Money.of(10.03, "CHF");
+
+        MonetaryAmount firstResult = exercises.applySwissCashRounding(firstAmount);
+        MonetaryAmount secondResult = exercises.applySwissCashRounding(secondAmount);
+
+        assertThat(firstResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(firstResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("10.00");
+        assertThat(secondResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(secondResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("10.05");
+    }
+
+    @Test
+    void shouldCreateSwissCashRoundingOperator() {
+        MonetaryOperator rounding = exercises.createSwissCashRounding();
+        MonetaryAmount firstAmount = Money.of(10.02, "CHF");
+        MonetaryAmount secondAmount = Money.of(10.03, "CHF");
+
+        MonetaryAmount firstResult = firstAmount.with(rounding);
+        MonetaryAmount secondResult = secondAmount.with(rounding);
+
+        assertThat(firstResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(firstResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("10.00");
+        assertThat(secondResult.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(secondResult.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("10.05");
+    }
+}
--- a/src/test/java/swiss/fihlon/workshop/money/part3/OrderExercisesTest.java
+++ b/src/test/java/swiss/fihlon/workshop/money/part3/OrderExercisesTest.java
@ -0,0 +1,79 @@
+package swiss.fihlon.workshop.money.part3;
+
+import java.math.BigDecimal;
+import javax.money.CurrencyUnit;
+import javax.money.Monetary;
+import javax.money.MonetaryAmount;
+import org.javamoney.moneta.Money;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class OrderExercisesTest {
+
+    private final OrderExercises exercises = new OrderExercises();
+
+    @Test
+    void shouldCalculateSubtotal() {
+        MonetaryAmount unitPrice = Money.of(10.00, "CHF");
+
+        MonetaryAmount result = exercises.calculateSubtotal(unitPrice, 3);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("30.00");
+    }
+
+    @Test
+    void shouldApplyDiscount() {
+        MonetaryAmount subtotal = Money.of(30.00, "CHF");
+
+        MonetaryAmount result = exercises.applyDiscount(subtotal);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("27.00");
+    }
+
+    @Test
+    void shouldApplyVat() {
+        MonetaryAmount discountedAmount = Money.of(27.00, "CHF");
+
+        MonetaryAmount result = exercises.applyVat(discountedAmount);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("29.08");
+    }
+
+    @Test
+    void shouldCalculateTotal() {
+        MonetaryAmount unitPrice = Money.of(10.00, "CHF");
+
+        MonetaryAmount result = exercises.calculateTotal(unitPrice, 3);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency().getCurrencyCode()).isEqualTo("CHF");
+        assertThat(result.getNumber().numberValueExact(BigDecimal.class)).isEqualByComparingTo("29.08");
+    }
+
+    @Test
+    void shouldFormatTotalInSwissGermanLocale() {
+        MonetaryAmount total = Money.of(29.08, "CHF");
+
+        String result = exercises.formatTotal(total);
+
+        assertThat(result).isEqualTo("CHF 29.08");
+    }
+
+    @Test
+    void shouldConvertAmountToTargetCurrency() {
+        MonetaryAmount amount = Money.of(29.08, "CHF");
+        CurrencyUnit eur = Monetary.getCurrency("EUR");
+
+        MonetaryAmount result = exercises.convertToCurrency(amount, eur);
+
+        assertThat(result).isNotNull();
+        assertThat(result.getCurrency()).isEqualTo(eur);
+    }
+}