Consider below code of Test.java file:
1. package com.sampleproject.oca;
2.
3. interface Perishable1 {
4. default int maxDays() {
5. return 1;
6. }
7. }
8.
9. interface Perishable2 extends Perishable1 {
10. default int maxDays() {
11. return 2;
12. }
13. }
14.
15. class Milk implements Perishable2, Perishable1 {}
16.
17. public class Test {
18. public static void main(String[] args) {
19. Perishable1 obj = new Milk();
20. System.out.println(obj.maxDays());
21. }
22. }
Which of the following statements is correct?
Given:
Consider below codes of 3 java files:
1. //M.java
2. package com.sampleproject.oca;
3.
4. public class M {
5. public void printName() {
6. System.out.println("M");
7. }
8. }
1. //N.java
2. package com.sampleproject.oca;
3.
4. public class N extends M {
5. public void printName() {
6. System.out.println("N");
7. }
8. }
1. //Test.java
2. package com.sampleproject.oca.test;
3.
4. import com.sampleproject.oca.*;
5.
6. public class Test {
7. public static void main(String[] args) {
8. M obj1 = new M();
9. N obj2 = (N)obj1;
10. obj2.printName();
11. }
12. }
What will be the result of compiling and executing Test class?
Given the code fragment:
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?
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