Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. interface Printer1 {
4. default void print() {
5. System.out.println("Printer1");
6. }
7. }
8.
9. class Printer2 {
10. public void print() {
11. System.out.println("Printer2");
12. }
13. }
14.
15. class Printer extends Printer2 implements Printer1 {
16.
17. }
18.
19. public class Test {
20. public static void main(String[] args) {
21. Printer printer = new Printer();
22. printer.print();
23. }
24. }
What will be the result of compiling and executing Test class?
Consider the code of Greet.java file:
1. package com.udayan.ocp;
2.
3. public final class Greet {
4. private String msg;
5. public Greet(String msg) {
6. this.msg = msg;
7. }
8.
9. public String getMsg() {
10. return msg;
11. }
12.
13. public void setMsg(String msg) {
14. this.msg = msg;
15. }
16. }
Is Greet class an immutable class?
What will be the result of compiling and executing class Test?
1. package com.udayan.ocp;
2.
3. class X {
4. class Y {
5. private void m() {
6. System.out.println("INNER");
7. }
8. }
9.
10. public void invokeInner() {
11. Y obj = new Y(); //Line 9
12. obj.m(); //Line 10
13. }
14. }
15.
16. public class Test {
17. public static void main(String[] args) {
18. new X().invokeInner();
19. }
20. }
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