The new Oracle 1Z0-809 exam questions cover real topics from the latest Java SE 8 Programmer II release. Each question helps you review dificult key areas and understand how the Oracle Java system works in real scenarios. Practice regularly with updated version of 1Z0 809 dumps, focus on weak points, prepare for your desired test effectively and pass your Oracle certification exam confidently on your first try.
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 M?
1. package com.udayan.ocp;
2.
3. class M {
4. private int num1 = 100;
5. class N {
6. private int num2 = 200;
7. }
8.
9. public static void main(String[] args) {
10. M outer = new M();
11. M.N inner = outer.new N();
12. System.out.println(outer.num1 + inner.num2);
13. }
14. }
Consider the code of Test.java file:
1. package com.udayan.ocp;
2.
3. class Player {
4. String name;
5. int age;
6.
7. Player() {
8. this.name = "Yuvraj";
9. this.age = 36;
10. }
11.
12. public String toString() {
13. return name + ", " + age;
14. }
15.
16. public Class getClass() {
17. return super.getClass();
18. }
19. }
20.
21. public class Test {
22. public static void main(String[] args) {
23. System.out.println(new Player());
24. }
25. }
What will be the result of compiling and executing Test class?
Given the content of Operator.java, EngineOperator.java, and Engine.java files:
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