Java tutorial
import org.apache.commons.lang.ClassUtils; public class ClassUtilsTrial { public static void main(String[] args) { System.out.println( "1) Interfaces implemented by java.lang.String >>> " + ClassUtils.getAllInterfaces(String.class)); System.out .println("2) SuperClasses of java.lang.String >>> " + ClassUtils.getAllSuperclasses(String.class)); System.out.println("3) PackageName of a string >>> " + ClassUtils.getPackageName("A String", "IfNull")); System.out.println("4) Every String is an Object = " + ClassUtils.isAssignable(String.class, Object.class)); System.out.println("5) Every Object is an String = " + ClassUtils.isAssignable(Object.class, String.class)); } }