You must create a timer class instance to use the timer's functions. Add the following code to the Java file:timer = new Timer (countdown, this);Notice the "countdown" variable is used.

You satisfy the first problem by delegating the monitoring to a dedicated file monitor. You satisfy the second by using two classes from the JDK 1.3 java.util package: Timer and TimerTask.

This month’s Java 101 concludes the thread series by focusing on thread groups, volatility, thread-local variables, timers, and the ThreadDeath class. Java requires every thread and every thread ...