What is JUnit and how do I use it in Java?

What is JUnit and how do I use it in Java?

JUnit is a testing framework for Java that allows you to write and run repeatable tests. It's essential for test-driven development.

Can you show me a simple example of a JUnit test?

Sure! Here's a basic example:

import org.junit.Test;
import static org.junit.Assert.*;

public class SimpleTest {
    @Test
    public void testAddition() {
        assertEquals(2, 1 + 1);
    }
}

How do I run JUnit tests in my IDE?

In most IDEs like IntelliJ or Eclipse, you can right-click on the test class or method and select 'Run'. It will execute the tests and show the results.

What are some best practices for writing JUnit tests?

Some best practices include: keeping tests independent, using meaningful names, and testing one thing at a time.