43 lines
1.0 KiB
Java
43 lines
1.0 KiB
Java
import java.util.*;
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public class JavaFinal {
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public static void main(String[] args) {
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javaInstanceOfOperator();
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}
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public static void javaInstanceOfOperator() {
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String str = "Hello, World!";
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boolean result = str instanceof String;
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System.out.println(result);
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}
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class Animal {}
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class Dog extends Animal {}
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public void checkInstance() {
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Animal animal = new Dog();
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if (animal instanceof Dog) {
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Dog dog = (Dog) animal;
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System.out.println("Woof!");
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}
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}
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public void javaInstanceOfInterface() {
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Thread thread = new Thread();
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if (thread instanceof Runnable) {
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System.out.println("Thread implements Runnable");
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}
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}
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public void typeCastingWithInstanceOf() {
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Object animal = new Cat();
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if (animal instanceof Dog) {
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Dog dog = (Dog) animal;
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dog.bark();
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} else if (animal instanceof Cat) {
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Cat cat = (Cat) animal;
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cat.meow();
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}
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}
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}
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