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Best 1Z0-808 Exam Questions for OCA Java SE 8 Programmer I

Ace Your OCA Java SE 8 Programmer I Exam with Realistic 1Z0-808 Exam Questions

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Question 1

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

1. package com.udayan.oca;

3. import java.util.ArrayList;

4. import java.util.List;

6. public class Test {

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

8. List list = new ArrayList<>();

9. list.add(100);

10. list.add(200);

11. list.add(100);

12. list.add(200);

13. list.remove(new Integer(100));

14.

15. System.out.println(list);

16. }

17. }

Options :

A : [100, 200, 200]

B : Compilation error

C : Exception is thrown at runtime

D : [200]

E : [200, 100, 200]

F : [200, 200]

Answer: E

Question 2

Consider below codes of 3 java files:

1. //Super.java

2. package com.sampleproject.oca;

4. public interface Super {

5. String name = "SUPER"; //Line n1

6. }

1. //Sub.java

2. package com.sampleproject.oca;

4. public interface Sub extends Super { //Line n2

6. }

1. //Test.java

2. package com.sampleproject.oca;

4. public class Test {

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

6. Sub sub = null;

7. System.out.println(sub.name); //Line n3

8. }

Which of the following statements is correct?

Options :

A : Line n2 causes compilation error

B : Line n1 causes compilation error

C : Line n3 causes compilation error

D : Line n3 throws an exception at runtime

E : Test class compiles successfully and on execution prints SUPER on to the console

Answer: E

Question 3

Which statement is true about the switch statement?

Options :

A : It must contain the default section.

B : The break statement, at the end of each case block, is mandatory.

C : Its case label literals can be changed at runtime.

D : Its expression must evaluate to a single value.

Answer: D

Question 4

Given code of Test.java file:

1. package com.sampleproject.oca;

3. interface Blogger {

4. default void blog() throws Exception {

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

6. }

7. }

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?

Options :

A : An exception is thrown at runtime

B : TRAVEL is printed on to the console and program terminates successfully

C : Compilation error in Test class

D : GENERIC is printed on to the console and program terminates successfully

E : Compilation error in TravelBlogger class

Answer: B

Question 5

Which of the following is not a valid array declaration?

Options :

A : int arr4[][] = new int[][8];

B : int [] arr1 = new int[8];

C : int [] arr3 [] = new int[8][];

D : int [][] arr2 = new int[8][8];

Answer: A

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