我的问题:如何在ThreadPoolExecutor
上执行一堆线程对象,等待它们全部完成后再继续执行下去?
我是新手,正在通过这段代码学习ThreadPoolExecutor的工作原理。目前,我甚至没有用对象填充BlockingQueue
,因为我不知道如何在不使用另一个RunnableObject
调用execute()
的情况下启动队列。无论如何,现在我只是调用了awaitTermination()
,但我认为我还是缺少了什么。有任何提示都将是极好的!谢谢。
public void testThreadPoolExecutor() throws InterruptedException {
int limit = 20;
BlockingQueue q = new ArrayBlockingQueue(limit);
ThreadPoolExecutor ex = new ThreadPoolExecutor(limit, limit, 20, TimeUnit.SECONDS, q);
for (int i = 0; i < limit; i++) {
ex.execute(new RunnableObject(i + 1));
}
ex.awaitTermination(2, TimeUnit.SECONDS);
System.out.println("finished");
}
RunnableObject类:
package playground;
public class RunnableObject implements Runnable {
private final int id;
public RunnableObject(int id) {
this.id = id;
}
@Override
public void run() {
System.out.println("ID: " + id + " started");
try {
Thread.sleep(2354);
} catch (InterruptedException ignore) {
}
System.out.println("ID: " + id + " ended");
}
}