•••

Declare a class ComboLock that works like the combination lock in a gym locker, as shown here. The lock is constructed with a combina tion—three numbers between 0 and 39. The reset method resets the dial so that it points to 0. The turnLeft and turnRight methods turn the dial by a given number of ticks to the left or right. The open method attempts to open the lock. The lock opens if the user first turned it right to the first number in the combination, then left to the second, and then right to the third.

•••

public class ComboLock { } public ComboLock (int secretl, int secret2, int secret3) { . public void reset() {...} public void turnLeft (int ticks) { public void turnRight (int ticks) { public boolean open() {...} . } . } }