//: c13:SimplePriorities.java
// Shows the use of thread priorities.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
public class SimplePriorities extends Thread {
private int countDown = 5;
private volatile double d = 0; // No optimization
public SimplePriorities(int priority) {
setPriority(priority);
start();
}
public String toString() {
return super.toString() + ": " + countDown;
}
public void run() {
while(true) {
// An expensive, interruptable operation:
for(int i = 1; i < 100000; i++)
d = d + (Math.PI + Math.E) / (double)i;
System.out.println(this);
if(--countDown == 0) return;
}
}
public static void main(String[] args) {
new SimplePriorities(Thread.MAX_PRIORITY);
for(int i = 0; i < 5; i++)
new SimplePriorities(Thread.MIN_PRIORITY);
}
} ///:~