OCP Java SE 6 Programmer Practice Exams (Exam 310-065)

D. Somewhere in the code, a second instance of Piston must be instantiated.

E. There are errors in the code that must be fixed, outside of lines 4, 12, and 13.

Answer (for Objective 1.5):

B and C are correct. Regular inner classes cannot have static declarations, and line 12 (not line 13), uses the correct syntax to create an inner class instance from outside the enclosing class. The rest of the code is correct.

A, D, and E are incorrect based on the above.

31. Given:

          2. public class Juggler extends Thread {          3.   public static void main(String[] args) { ...