如何暂停一段时间的线程？(How to suspend a thread for a while?)
问题描述 (Problem Description)
如何暂停一段时间的线程？
解决方案 (Solution)
下面的示例演示如何通过创建sleepingThread（）方法暂停一段时间。
public class SleepingThread extends Thread {
private int countDown = 5;
private static int threadCount = 0;
public SleepingThread() {
super("" + ++threadCount);
start();
}
public String toString() {
return "#" + getName() + ": " + countDown;
}
public void run() {
while (true) {
System.out.println(this);
if (--countDown == 0) return;
try {
sleep(100);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
public static void main(String[] args) throws InterruptedException {
for (int i = 0; i < 5; i++) new SleepingThread().join();
System.out.println("The thread has been suspened.");
}
}
结果 (Result)
上面的代码示例将产生以下结果。
#1: 5
#1: 4
#1: 3
#1: 2
#1: 1
#2: 5
#2: 4
#2: 3
#2: 2
#2: 1
#3: 5
#3: 4
#3: 3
#3: 2
#3: 1
#4: 5
#4: 4
#4: 3
#4: 2
#4: 1
#5: 5
#5: 4
#5: 3
#5: 2
#5: 1
The thread has been suspened.
