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Question ID 3543

Given:
import java.util.concurrent.atomic.AtomicInteger;
public class AtomicCounter {
private AtomicInteger c = new AtomicInteger(0);
public void increment() {
// insert code here
}
}
Which line of code, inserted inside the increment () method, will increment the value of c?
 

Option A

A.    c.addAndGet();
 

Option B

B.    c++;
 

Option C

C.    c = c+1;
 

Option D

D. c.getAndIncrement ();
 

Correct Answer D
Explanation


Question ID 3544

Option A

A.    Results must be retrieved from the newly created MyTask instances and combined.
 

Option B

B.    The threshold value must be increased so that the overhead of task creation does not dominate the cost ofcomputation.
 

Option C

C.    The midpoint computation must be altered so that it splits the workload in an optimal manner.
 

Option D

D.    The compute () method must be changed to return an Integer result.
 

Option E

E.    The compute () method must be enhanced to (fork) newly created tasks.
 

Option F

F.    The myTask class must be modified to extend RecursiveAction instead of RecursiveTask
 

Correct Answer A,D
Explanation

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