Consider below code of Test.java file:
1. package com.sampleproject.oca;
2.
3. class Super {
4. public String num = "10"; //Line n1
5. }
6.
7. class Sub extends Super {
8. protected int num = 20; //Line n2
9. }
10.
11. public class Test {
12. public static void main(String[] args) {
13. Super obj = new Sub();
14. System.out.println(obj.num += 2); //Line n3
15. }
16. }
What will be the result of compiling and executing above code?
Consider below code of Test.java file:
1. package com.sampleproject.oca;
2.
3. public class Test {
4. public static void main(String[] args) {
5. int i = 1;
6. int j = 5;
7. int k = 0;
8. A: while(true) {
9. i++;
10. B: while(true) {
11. j--;
12. C: while(true) {
13. k += i + j;
14. if(i == j)
15. break A;
16. else if (i > j)
17. continue A;
18. else
19. continue B;
20. }
21. }
22. }
23. System.out.println(k);
24. }
25. }
What will be the result of compiling and executing Test class?
Consider below code of Test.java file:
1. package com.sampleproject.oca;
2.
3. public class Test {
4. public static void main(String[] args) {
5. String [][] arr = { {"%", "$$"}, {"***", "@@@@", "#####"}};
6. for(String [] str : arr) {
7. for(String s : str) {
8. System.out.println(s);
9. if(s.length() == 4) //Line n1
10. break; //Line n2
11. }
12. break; //Line n3
13. }
14. }
15. }
What will be the result of compiling and executing Test class?
Consider below codes of 2 java files:
1. //Flyable.java
2. package com.sampleproject.oca;
3.
4. public interface Flyable {
5. static int horizontalDegree() { //Line n1
6. return 20;
7. }
8.
9. default void fly() {
10. System.out.println("Flying at " + horizontalDegree() + " degrees."); //Line n2
11. }
12.
13. void land();
14. }
1. //Aeroplane.java
2. package com.sampleproject.oca;
3.
4. public class Aeroplane implements Flyable {
5. public void land() {
6. System.out.println("Landing at " + -Flyable.horizontalDegree() + " degrees."); //Line n3
7. }
8.
9. public static void main(String[] args) {
10. new Aeroplane().fly();
11. new Aeroplane().land();
12. }
13. }
What will be the result of compiling and executing Aeroplane class?
What will be the result of compiling and executing Test class?
1. //Test.java
2. package com.udayan.oca;
3.
4. class Point {
5. static int x;
6. private int y;
7.
8. public String toString() {
9. return "Point(" + x + ", " + y + ")";
10. }
11. }
12.
13. public class Test {
14. public static void main(String[] args) {
15. Point p1 = new Point();
16. p1.x = 100;
17. p1.y = 200;
18.
19. Point p2 = new Point();
20. p2.x = 100;
21. p2.y = 200;
22.
23. System.out.println(p1);
24. }
25. }
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