Test Difficulty Level: Medium

Syllabus of Test

Questions based on SCJP

Sample Question from this online test:

Question: 1. public class X implements Runnable(
2. private int x;
3. private int y;
4.
5. public static void main(String[]args)
6. X that = new X();
7. (new Thread(that)).start();
8. (new Thread(that)).start();
9. )
10.
11. public void run() (
12. for (;;) (
13. x++;
14. y++;
15. System.out.printIn(“x=” + x + “, y = ” + y);
16. )
17. )
18. )
What is the result?
A. B. C.
D. (for example, “x=1, y=1”. In addition, each value appears only for
once (for example, “x=1, y=1” followed by “x=2, y=2”).

Option A: Errors at lines 7 and 8 cause compilation to fail.

Option B: The program prints pairs of values for x and y that might not always be the same

Option C: Each value appears twice.

Option D: Each value appears only for only once.

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