与线程休眠类似，线程的优先级仍然无法保障线程的执行次序。只不过，优先级高的线程获取CPU资源的概率较大，优先级低的并非没机会执行。
线程的优先级用1-10之间的整数表示，数值越大优先级越高，默认的优先级为5。
在一个线程中开启另外一个新线程，则新开线程称为该线程的子线程，子线程初始优先级与父线程相同。
package cn.thread;
/**
* 线程的调度(优先级)
*
* @author 林计钦
* @version 1.0 2013-7-24 上午09:30:42
*/
public class ThreadPriority {
public static void main(String[] args) {
ThreadPriority thread=new ThreadPriority();
Thread t1 = thread.new MyThread1();
Thread t2 = new Thread(thread.new MyRunnable());
t1.setPriority(10);
t2.setPriority(1);
t2.start();
t1.start();
}
class MyThread1 extends Thread {
public void run() {
for (int i = 0; i
System.out.println("线程1第" + i + "次执行！");
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
class MyRunnable implements Runnable {
public void run() {
for (int i = 0; i
System.out.println("线程2第" + i + "次执行！");
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
