实例

下面看一个例子：

package demo.ch;public class UserThread extends Thread {    UserThread() {        super();    }    UserThread(String name) {        super(name);    }    public void run() {        System.out.println("thread started running..");    }    public static void main(String[] args) {        UserThread thread1 = new UserThread("Thread1");        UserThread thread2 = new UserThread("Thread2");        System.out.println("Thread 1 initial name and priority");        System.out.println("name:" + thread1.getName());        System.out.println("priority:" + thread1.getPriority());        System.out.println("Thread 2 initial name and priority");        System.out.println("name:" + thread2.getName());        System.out.println("priority:" + thread2.getPriority());        System.out.println("");        thread1.setPriority(6);        thread2.setPriority(9);        System.out.println("Thread 1 initial name and priority");        System.out.println("name:" + thread1.getName());        System.out.println("priority:" + thread1.getPriority());        System.out.println("Thread 2 initial name and priority");        System.out.println("name:" + thread2.getName());        System.out.println("priority:" + thread2.getPriority());        System.out.println("");        thread1.start();        thread2.start();        for(int i=0; i<5; i++)            System.out.println("main method i value: " + i);    }}

输出结果：

Thread 1 initial name and priorityname:Thread1priority:5Thread 2 initial name and priorityname:Thread2priority:5Thread 1 initial name and priorityname:Thread1priority:6Thread 2 initial name and priorityname:Thread2priority:9main method i value: 0main method i value: 1thread started running..main method i value: 2thread started running..main method i value: 3main method i value: 4