请教下在java多线程程序中，怎样实时找出处于等待（阻塞）状态线程、进程的个数？

Question

就是在很多没有规律的线程中，判断出哪些正在运行，哪些处于等待状态，哪些已经dead

Answer 1

线程的最大好处就是可以共用同一个内存块。你只要定义一个静态的变量，给所有线程读写操作。你就能统计这些了。

Answer 2

class Example1 extends Thread {boolean stop=false;public static void main( String args[] ) throws Exception {Example1 thread = new Example1();System.out.println( "Starting thread..." );thread.start();Thread.sleep( 3000 );System.out.println( "Interrupting thread..." );thread.interrupt();Thread.sleep( 3000 );System.out.println("Stopping application..." );//System.exit(0);}public void run() {while(!stop){System.out.println( "Thread is running..." );long time = System.currentTimeMillis();while((System.currentTimeMillis()-time < 1000)) {}}System.out.println("Thread exiting under request..." );}}你输出后会看到的