Calculator — Maven + JUnit 5 (OSS Lecture 6)

A minimal Java project showing Apache Maven for build automation and JUnit 5 for unit testing.

Requirements

• Java 17+
• Maven 3.9+
• (Optional) VS Code + “Extension Pack for Java”

Project Layout

• src/main/java/... application code
• src/test/java/... test code
• pom.xml Maven config

Quick Start (CLI)

# compile sources
mvn compile

# run unit tests
mvn test

# package JAR into /target
mvn package

# clean build artifacts
mvn clean

Test Report (HTML)

mvn surefire-report:report
# open target/site/surefire-report.html

VS Code (Testing UI)

1. Open the folder in VS Code.
2. Go to the Testing view (beaker icon) → Run All Tests.
3. If tests don’t appear: Ctrl+Shift+P → Java: Clean Java Language Server Workspace.

Troubleshooting

• Ensure package names match folders.
• Confirm JUnit 5 dependencies are in pom.xml.
• Java version in pom.xml matches your installed JDK.