Usage of IsAssignableFrom in Java

Class1.isassignablefrom (Class2) determines Class whether the class or interface represented by this object is the Class same as the class or interface represented by the specified parameter, or whether it is a superclass or a hyper-interface. returns if yes true ; false If it Class represents a base type, and the specified Class parameter is exactly the Class object, the method returns true ; false

1.class2 is not a subclass or sub-interface of Class1

2.Object is the parent class for all classes

An example is done:

 PackageCom.auuzee.test1;classA {}classBextendsA {} Public classTest1 { Public Static voidMain (string[] args) {A a=NewA (); b b=NewB (); A BA=NewB (); System.out.println ("1-------------"); System.out.println (A.class. IsAssignableFrom (A.getclass ())); System.out.println (B.class. IsAssignableFrom (B.getclass ())); System.out.println (A.class. IsAssignableFrom (B.getclass ())); System.out.println (B.class. IsAssignableFrom (A.getclass ())); System.out.println (A.class. IsAssignableFrom (Ba.getclass ())); System.out.println (B.class. IsAssignableFrom (Ba.getclass ())); System.out.println ("2-------------"); System.out.println (A.getclass (). IsAssignableFrom (A.class)); System.out.println (B.getclass (). IsAssignableFrom (b.class)); System.out.println (A.getclass (). IsAssignableFrom (B.class)); System.out.println (B.getclass (). IsAssignableFrom (A.class)); System.out.println (Ba.getclass (). IsAssignableFrom (A.class)); System.out.println (Ba.getclass (). IsAssignableFrom (B.class)); System.out.println ("3-------------"); System.out.println (Object.class. IsAssignableFrom (B.getclass ())); System.out.println (Object.class. IsAssignableFrom ("ABC". GetClass ())); System.out.println ("4-------------"); System.out.println ("A". GetClass (). IsAssignableFrom (Object.class)); System.out.println ("ABC". getclass (). IsAssignableFrom (Object.class)); }}

Usage of IsAssignableFrom in Java