创建一个线程A，线程A还可以继续创建另外的线程b吗？

Question

各位大虾们

现在我已经创建了以个线程A。
我还想用这个线程A创建另外的一个线程b。
可以这样理解：线程b是由线程A创建的。

这样的话，线程b可以创建吗？

有没有代码可以参考的？[color=darkred][/color]

Answer 1

首先,线程可以继续创建线程.
给你看个例子:
[code="java"]
public class SimpleThreads {

// Display a message, preceded by the name of the current thread
public static void threadMessage(String message) {
    String threadName = Thread.currentThread().getName();
    System.out.format("%s: %s%n", threadName, message);
}

public static void main(String args[]) throws InterruptedException {
    Thread t = new Thread(new TestThread());
    t.start();

}

}

class TestThread implements Runnable {

private static int depth = 0;

@Override
public void run() {
    SimpleThreads.threadMessage("Thread Start");
    SimpleThreads.threadMessage("Depth= " + depth);
    if (depth < 5) {
        depth++;
        new Thread(new TestThread()).start();
    }
    try {
        Thread.sleep(4000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    SimpleThreads.threadMessage("Thread END");
}

}
[/code]
例子里的TestTread就通过自己反复创建子线程.
应该看的比较清楚了.输出是:
[quote]Thread-0: Thread Start
Thread-0: Depth= 0
Thread-1: Thread Start
Thread-1: Depth= 1
Thread-2: Thread Start
Thread-2: Depth= 2
Thread-3: Thread Start
Thread-3: Depth= 3
Thread-4: Thread Start
Thread-4: Depth= 4
Thread-5: Thread Start
Thread-5: Depth= 5
Thread-0: Thread END
Thread-1: Thread END
Thread-2: Thread END
Thread-3: Thread END
Thread-4: Thread END
Thread-5: Thread END
[/quote]