Download the junit-platform-console-standalone-[version].jar .
Once you have downloaded the .jar file, you must tell Java where to find it. In IntelliJ IDEA: how to download junit jar file
: This is the official search engine for Java artifacts. Search for JUnit : Download the junit-platform-console-standalone-[version]
While downloading JARs manually works, it is difficult to manage updates. Modern Java developers use or Gradle to "download" these files automatically. For Maven ( pom.xml ) Add this snippet to your dependencies: how to download junit jar file