Examine the SharedData class shown below.Suppose two threads are created so that each has access to the same SharedData object.Thread one calls setSharedData eight times with values 1...8 respectively, sleeping for 30 milliseconds between calls.Thread two calls getSharedData eight times, also sleeping for 30 milliseconds between calls.Which of the following orders of values is not possible for thread two to receive?
A)1,2,3,4,5,6,7,8
B)1,2,2,4,5,6,7,8
C)1,2,3,4,5,6,8,8
D)1,2,3,4,5,6,8,7

Question

Examine the SharedData class shown below.Suppose two threads are created so that each has access to the same SharedData object.Thread one calls setSharedData eight times with values 1...8 respectively, sleeping for 30 milliseconds between calls.Thread two calls getSharedData eight times, also sleeping for 30 milliseconds between calls.Which of the following orders of values is not possible for thread two to receive?  
A)1,2,3,4,5,6,7,8 
B)1,2,2,4,5,6,7,8 
C)1,2,3,4,5,6,8,8 
D)1,2,3,4,5,6,8,7

Quizplus · Accepted Answer

Since thread one sets the values in order from 1 to 8, it is impossible for thread two to receive values out of order. However, if thread one sets 8 before 7, it is possible for thread two to receive 8 before 7. Therefore, option D is not possible.

Examine the SharedData Class Shown Below