示例

public static final Boolean lock = Boolean.TRUE;

public static void main( String[] args ) {
Runnable runnable = new Runnable() {
public void run() {
synchronized (lock){
while ( true ) {
System.out.println( "Hello World!" ); //$NON-NLS-1$
try { wait( 1000 ); } catch (InterruptedException e) {}
}
}
}
};
Thread thread = new Thread( runnable );
thread.start();
try { Thread.sleep( 3000 ); } catch (InterruptedException e) {}
thread.stop();
}

解决方案

以下是从 Java 文档中抽取的内容（由 Sun Microsystems 版权所有）
应该将许多情况下使用的 stop 替换为以下代码：仅仅通过修改某个变量来表明目标线程应该停止运行。
目标线程应该定期检查此变量，如果此变量表明要停止运行该线程，该线程就有序地从它的 run 方法返回。如果目标线程等待了很长时间（例如，等待某个条件变量成立），则应该使用中断方法来中断等待。
使用提供的 StopSafeRunnable。

public static abstract class StopSafeRunnable implements Runnable {
public final void run() {
while ( !stopped ) {
doRun();
}
}
public void stop() {
stopped = true;
}
public boolean isStopped() {
return stopped;
}
protected abstract void doRun();

private boolean stopped = false;
}

public static void main(String[] args) {
StopSafeRunnable runnable = new StopSafeRunnable() {
public void doRun() {
System.out.println( "Hello World" ); //$NON-NLS-1$
try { Thread.sleep( 1000 ); } catch (InterruptedException e) {}
}
};
Thread thread = new Thread( runnable );
thread.start();
try { Thread.sleep( 3000 ); } catch (InterruptedException e) {}
runnable.stop();
}