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Java interview programming questions on this keyword part 2

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instanceof java

Posts: 576
Nickname: instanceof
Registered: Jan, 2015

instanceof java is a java related one.
Java interview programming questions on this keyword part 2 Posted: Jul 6, 2016 12:02 PM
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This post originated from an RSS feed registered with Java Buzz by instanceof java.
Original Post: Java interview programming questions on this keyword part 2
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Java Quiz on this keyword part #2
  • Java interview program on this keyword: can we call method using this keyword?
  
Program  #5:

java programming on this keyword


Click for Output


Program #6: Can we call non static method from constructor using this?

Java programming examples on this keyword


Click for Output


Program #7: Can we assign something to this ?



  1. package thiskeywordinterviewprograms.java;
  2. public class ThisDemo {
  3.  
  4.     int a;
  5.     int b;
  6.     
  7.  ThisDemo(int x, int y){
  8.  
  9.        this= new ThisDemo();
  10.         System.out.println("Two argument constructor called.");
  11.         this.x=x;
  12.         this.y=y;
  13.         
  14. }
  15.  
  16. public static void main(String[] args) {
  17.         
  18.     ThisDemo obj = new ThisDemo(10, 20);
  19.         
  20.      System.out.println(obj.a);
  21.      System.out.println(obj.b);

  23. }
  24.  
  25. }


Click for Output


Program #8 : Can we use this as return statement in a method?


  1. public class B{

  3.    int a;
  4.     
  5.  public int getA() {
  6.         return a;
  7.  }
  8.  
  9. public void setA(int a) {
  10.         this.a = a;
  11. }
  12.  
  13. B show(){
  14.     return this;
  15. }
  16.  
  17. public static void main(String[] args) {
  18.        
  19.  B obj = new B();
  20.  
  21.   obj.setA(10);
  22.  
  23.  System.out.println(obj.getA());
  24.  B obj2= obj.show();
  25.  System.out.println(obj2.getA());
  26.  
  27. }

  29. }

Click for Output



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