Poeple use the static import statement on org.junit.Assert to save coding time on calling its assetion methods. With a normal import statement, assertion method names must qualified with the class name like this:

import org.junit.Assert;

...

Assert.assertEquals(12, message.length());

With a static import statement, assertion method names can be used directly like this:

import static org.junit.Assert.*;

...

assertEquals(12, message.length());