How To Write Test Cases In Java

In Java, test cases are typically written using JUnit, a popular testing framework. To write a test case, follow these steps:

1. Set up JUnit: Add JUnit dependency in your project.
2. Create a test class: Annotate it with @Test.
3. Write test methods: Each method should test one unit of functionality.
4. Assertions: Use assertions like assertEquals(), assertTrue(), assertFalse(), etc., to verify expected results.

Example:

This tests the add() method of a Calculator class.