Question

我遇到了处理线程完成的类问题。它可以通知其他线程，因为第二个线程可以启动。这是我的项目结构：

MainClass.java

public class MainClass implements ThreadCompleteListener {

public void main(String[] args) throws InterruptedException {

    NotifyingThread test = new Thread1();
    test.addListener((ThreadCompleteListener) this); 
    test.start();         

}

@Override
public void notifyOfThreadComplete(Thread thread) {
    // TODO Auto-generated method stub

}   

}

类 - Thread1.java

public class Thread1 extends NotifyingThread {

@Override
public void doRun() {
    try {
        metoda();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public static synchronized void metoda() throws InterruptedException {
    for(int i = 0; i <= 3; i++) {
        Thread.sleep(500);
        System.out.println("method in Thread1");
    }
}

public void notifyOfThreadComplete(Thread thread) {
    // TODO Auto-generated method stub

}
}

NotifyingThread.java

import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;

public abstract class NotifyingThread extends Thread {
  private final Set<ThreadCompleteListener> listeners = new  CopyOnWriteArraySet<ThreadCompleteListener>();
  public final void addListener(final ThreadCompleteListener listener) {
    listeners.add(listener);
  }

  public final void removeListener(final ThreadCompleteListener listener) {
    listeners.remove(listener);
  }

  private final void notifyListeners() {
    for (ThreadCompleteListener listener : listeners) {
      listener.notifyOfThreadComplete(this);
    }
  }

  @Override
  public final void run() {
    try {
      doRun();
    } finally {
      notifyListeners();
    }
  }

  public abstract void doRun();
}

ThreadCompleteListener.java

public interface ThreadCompleteListener {
void notifyOfThreadComplete(final Thread thread);
}

我面临的问题是，当我执行MainClass时，我得到的错误如下：发生致命异常。程序将退出并在控制台中显示：

java.lang.NoSuchMethodError：main 线程＆＃34; main＆＃34;中的例外情况

任何人都可以帮助实现这一目标，或者说出我在代码中做错了什么吗？

非常感谢任何建议！

Answer 1

替换 public void main

public static void main

Answer 2

我认为你应该替换：

public void main(String[] args)

的

public static void main(String[] args)

线程监听器通知

2 个答案: