// instanceof Checks whether object is instance of a given class
Object obj = new String("Hello World!");
// obj is instance of String and as such first msg is printed out
if(obj instanceof String) {
System.out.println(obj + " is instance of String class"); // This msg is printed
} else {
System.out.println(obj + " is not instance of String class");
}class Main {
public static void main(String[] args) {
// create a variable of string type
String name = "Programiz";
// checks if name is instance of String
boolean result1 = name instanceof String;
System.out.println("name is an instance of String: " + result1);
// create an object of Main
Main obj = new Main();
// checks if obj is an instance of Main
boolean result2 = obj instanceof Main;
System.out.println("obj is an instance of Main: " + result2);
}
}class Main {
public static void main(String[] args) {
String str = "Programiz";
boolean result;
// checks if str is an instance of
// the String class
result = str instanceof String;
System.out.println("Is str an object of String? " + result);
}
}public class Main {
public static void main(String[] args) {
Main myObj = new Main();
System.out.println(myObj instanceof Main); // returns true
}
}@Test
public void givenWhenInstanceIsCorrect_thenReturnTrue() {
Ring ring = new Ring();
Assert.assertTrue(ring instanceof Round);
}// Java Program to check if an object of the subclass
// is also an instance of the superclass
// superclass
class Animal {
}
// subclass
class Dog extends Animal {
}
class Main {
public static void main(String[] args) {
// create an object of the subclass
Dog d1 = new Dog();
// checks if d1 is an instance of the subclass
System.out.println(d1 instanceof Dog); // prints true
// checks if d1 is an instance of the superclass
System.out.println(d1 instanceof Animal); // prints true
}
}