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Unit Testing JUnit Learn how to integrate JUnit 5 in your Maven or Gradle project for efficient Java testing. This guide covers adding dependencies, creating test classes, writing test methods, and running tests in IntelliJ IDEA and Visual Studio Code to ensure robust and error-free code. Step 1: Create a Simple Java Application Create a simple Java application, for example, “Copilot Demo,” and select Maven or Gradle as the build system through IntelliJ IDEA or Visual Studio Code. Step 2: Add JUnit Dependency For Maven: Add the following dependency to your pom.xml file inside the <dependencies> tag: XML <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter-engine</artifactId> <version>5.11.2</version> <scope>test</scope> </dependency> For Gradle: Add the following dependencies to your build.gradle file: dependencies { testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.11.2' } Step ...