In this section, we will be using JUnit as our testing framework. Add the following dependency to your Maven or Gradle project.
Here is the configuration for Maven:
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>Here is the configuration for Gradle:
dependencies {
compile 'junit:junit:4.12'
}To save yourself hassle, organize your code project to conform to the Maven Standard Directory layout. You might want to place your test classes in a /src/test/java/ folder so Maven and Gradle will automatically recognize it as the test code folder. You also should put your production code in a /src/main/java/ folder in your project. You can read more about the Maven Standard Directory layout at https://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html.