boolean condition = true; org.junit.Assert.assertFalse(condition);
String str = "JUnit is awesome!"; org.junit.Assert.assertFalse(str.startsWith("Java"));In this example, the assertFalse() method will pass since the "str" variable does not start with the "Java" substring. By looking at the package name "org.junit", it can be determined that the library used in these examples is the JUnit testing framework.