Code:
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 {}
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 {}
Koji mi je skroz nejasan i nije mi jasno sta se ovde desava ? Ovo sada tek prvi put vidim i nikada ga do sada nisma koristio a nalazi se u osnovama jave u delu operatori ?
Moze neko da mi objasni sta je ovo i kada se koristi. Hvala unapred.