Free Oracle 1Z0-808 Exam Questions

Given code of Test.java file:

1. package com.sampleproject.oca;

2.  

3. interface Blogger {

4.     default void blog() throws Exception {

5.         System.out.println("GENERIC");

6.     }

7. }

8.  

9. class TravelBlogger implements Blogger {

10.     public void blog() {

11.         System.out.println("TRAVEL");

12.     }

13. }

14.  

15. public class Test {

16.     public static void main(String[] args) {

17.         Blogger blogger = new TravelBlogger(); //Line n1

18.         ((TravelBlogger)blogger).blog(); //Line n2

19.     }

20. }

What will be the result of compiling and executing Test class?

Given the code fragments:

Which two statements are true? (Choose two.)

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 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?