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Update 1Z0-851 Simple Questions Latest Practice Test Questions VCE PDF Dumps

Qustion No. 1

Click the Exhibit button. What is the result?

A. go in Goban

go in Sente

B. go in Sente

go in Goban

C. go in Sente

go in Goban

D. go in Goban

go in Sente

E. Compilation fails because of an error in line 17.

Answer: C

 

Qustion No. 2

Given:

12. import java.util.*;

13. public class Explorer1

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

15. TreeSet<Integer> s = new TreeSet<Integer>();

16. TreeSet<Integer> subs = new TreeSet<Integer>();

17. for(int i = 606; i < 613; i++)

18. if(i%2 == 0) s.add(i);

19. subs = (TreeSet)s.subSet(608, true, 611, true);

20. s.add(609);

21. System.out.println(s + " " + subs);

22.

23. }

What is the result?

A. Compilation fails.

B. An exception is thrown at runtime.

C. [608, 609, 610, 612] [608, 610]

D. [608, 609, 610, 612] [608, 609, 610]

E. [606, 608, 609, 610, 612] [608, 610]

F. [606, 608, 609, 610, 612] [608, 609, 610]

Answer: F

 

Qustion No. 3

Given:

1. public class Donkey

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

3. boolean assertsOn = false;

4. assert (assertsOn) : assertsOn = true;

5. if(assertsOn) {

6. System.out.println("assert is on");

7.

8. }

9. }

If class Donkey is invoked twice, the first time without assertions enabled, and the second time with assertions enabled, what are the results?

A. no output

B. no output

assert is on

C. assert is on

D. no output

An AssertionError is thrown.

E. assert is on

An AssertionError is thrown.

Answer: D

 

Qustion No. 4

Given:

2. public class Hi

3. void m1() {

4. protected void() m2

5. }

6. class Lois extends Hi

7. // insert code here

8.

Which four code fragments, inserted independently at line 7, will compile? (Choose four.)

A. public void m1()

B. protected void m1()

C. private void m1()

D. void m2()

E. public void m2()

F. protected void m2()

G. private void m2()

Answer: ABEF

 

Qustion No. 5

Given:

11. public class PingPong implements Runnable

12. synchronized void hit(long n) {

13. for(int i = 1; i < 3; i++)

14. System.out.print(n + "-" + i + " ");

15.

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

17. new Thread(new PingPong()).start();

18. new Thread(new PingPong()).start();

19.

20. public void run()

21. hit(Thread.currentThread().getId());

22.

23. }

Which two statements are true? (Choose two.)

A. The output could be 8-1 7-2 8-2 7-1

B. The output could be 7-1 7-2 8-1 6-1

C. The output could be 8-1 7-1 7-2 8-2

D. The output could be 8-1 8-2 7-1 7-2

Answer: CD

 

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