// : c13:YieldingThread.java
// Suggesting when to switch threads with yield().
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
public class YieldingThread extends Thread {
private int countDown = 5;
private static int threadCount = 0;
public YieldingThread() {
super("" + ++threadCount);
start();
}
public String toString() {
return "#" + getName() + ": " + countDown;
}
public void run() {
while (true) {
System.out.println(this);
if (--countDown == 0)
return;
yield();
}
}
public static void main(String[] args) {
for (int i = 0; i < 5; i++)
new YieldingThread();
}
} ///:~