junit important tagas code example

Example 1: what is junit

-It is an open-source testing framework for java programmers. 
-Test runner support to execute the test case
-It is one of the unit testing framework.
-Assertion support for checking the expected result.
-Annotation support for test cases

Example 2: @test annotation in junit

# Used in JAVA
 public class Example {
    @Test
    public void method() {
       org.junit.Assert.assertTrue( new ArrayList().isEmpty() );
    }
 }