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(root)/JavaSE/ExempleOOP/src/introducere/java/operator/InstanceofDemo.java

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package inroducere.java.operator;

/**
 * The instanceof operator compares an object to a specified type.
 * You can use it to test if an object is an instance of a class,
 * an instance of a subclass, or an instance of a class that implements a
 * particular interface.The following program, InstanceofDemo, defines a parent
 * class (named Parent), a simple interface (named MyInterface), and a child class
 * (named Child) that inherits from the parent and implements the interface.
 */
public class InstanceofDemo {
          public static void main(String[] args) {

            Parent obj1 = new Parent();
            Parent obj2 = new Child();

            System.out.println("obj1 instanceof Parent: " + (obj1 instanceof Parent));
            System.out.println("obj1 instanceof Child: " + (obj1 instanceof Child));
            System.out.println("obj1 instanceof MyInterface: " + (obj1 instanceof MyInterface));
            System.out.println("obj2 instanceof Parent: " + (obj2 instanceof Parent));
            System.out.println("obj2 instanceof Child: " + (obj2 instanceof Child));
            System.out.println("obj2 instanceof MyInterface: " + (obj2 instanceof MyInterface));
          }
        }

class Parent{}

class Child extends Parent implements MyInterface{}

interface MyInterface{}