多线程设置优先级

// Demonstrate thread priorities.
class clicker implements Runnable {
     int click = 0;
    Thread t;
    private volatile boolean running = true;
    public clicker(int p) {
        t = new Thread(this);
        t.setPriority(p);
    }

    public void run() {
        while (running) {
            click++;
        }
    }

    public void stop() {
        running = false;
    }

    public void start() {
        t.start();
    }
}

class HiLoPri {
    public static void main(String args[]) {
        Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
        clicker hi = new clicker(Thread.NORM_PRIORITY + 2);
        clicker lo = new clicker(Thread.NORM_PRIORITY - 2);