Below are some of the most popular Java testing tools that are used for testing applications.

JUnit

JUnit is an open-source Java framework to unit test Java applications. For more information about JUnit Java Tool. JUnit tool is used for Unit testing.

https://www.testingdocs.com/junit-tutorial/

TestNG Framework

TestNG is an open-source and provides an API for adding custom implementations. NG in TestNG stands for ‘Next Generation’. TestNG is inspired by JUnit. It is a more versatile java tool for testing applications. TestNG is mostly used for functional testing.

https://www.testingdocs.com/testng-framework-tutorial/

Selenium WebDriver

Selenium is an API that can be used to automate browsers. It is an ecosystem of test tools and plugins. Selenium IDE is a browser plugin for Firefox and Chrome browsers. Selenium Grid is used for distributed testing. A distributed test distributes tests across multiple physical remote machines and/or VM’s, cloud devices so that tests can run in parallel. It is used for functional testing web applications.

https://www.testingdocs.com/selenium-webdriver-tutorial/

JBehave BDD Framework

JBehave is a framework for Behavior Driven Development. BDD is an evolution of test-driven development (TDD). It shifts the vocabulary from being test-based to behavior-based. JBehave stories use Gherkin syntax.

https://www.testingdocs.com/jbehave-framework-tutorial/