学习笔记——JAVA线程<3>线程的基本信息

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给线程取名字
判断线程是否存活线程不一定马上停止
setName()
getName()
isAlive()后台还有gc 异常线程

package study;/** * Thread.currentThread 当前线程 * steName() * getName() * isAlive() * @author  http://blog.csdn.net/thewaiting/ * */public class InfoDome{    public static void main(String[] args) throws InterruptedException {        ThreadDome t1 = new ThreadDome();        Thread proxy = new Thread(t1,"线程1");        proxy.setName("xiancheng");        System.out.println(proxy.getName());        System.out.println(Thread.currentThread().getName());        proxy.start();        System.out.println("启动后的状态"+proxy.isAlive());        Thread.sleep(5);        t1.stop();        Thread.sleep(100);        System.out.println("停止后的状态"+proxy.isAlive());    }}

线程体

package study;/** *  * @author http://blog.csdn.net/thewaiting/ * */public class ThreadDome implements Runnable {    private boolean flag = true;    private int num = 0;    @Override    public void run() {        while (flag) {            System.out.println(Thread.currentThread().getName()+num++);        }    }    public void stop() {        this.flag = false;    }}运行结果截取xiancheng146xiancheng147停止后的状态false

优先级问题
优先级 :概率不是绝对的优先级
setPriority()设置优先级
getPriority()获得优先级
MAX_PRIORITY 10
NORM_PRIORITY 5
MIN_PRIORITY 1

package study;/** * 优先级 :概率 不是绝对的优先级 * MAX_PRIORITY 10 * NORM_PRIORITY 5 * MIN_PRIORITY 1 * @author  http://blog.csdn.net/thewaiting/ * */public class InfoDome{    public static void main(String[] args) throws InterruptedException {        ThreadDome t1 = new ThreadDome();        Thread proxy = new Thread(t1,"线程1   ");        ThreadDome t2 = new ThreadDome();        Thread proxy2 = new Thread(t2,"线程2       ");        proxy.setPriority(Thread.MIN_PRIORITY);        proxy2.setPriority(Thread.MAX_PRIORITY);        proxy.start();        proxy2.start();        Thread.sleep(3);        t1.stop();        t2.stop();    }}

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