Java的常用方法--Java多线程机制

本文介绍了Java中线程的基础知识,包括Thread类与Runnable接口的关系、线程优先级设置、线程启动方法start()及线程运行方法run()的使用。此外,还详细解释了线程休眠方法sleep()的不同形式及其参数含义。

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 1、Java的线程类与Runnable接口
Thread类
public Thread() 创建线程对象
public Thread(Runnable target) target 称为被创建线程的目标对象,负责实现Runnable接口
线程优先级
Thread类有三个有关线程优先级的静态常量:MIN_PRIORITY,MAX_PRIORITY,NORM_PRIORITY
新建线程将继承创建它的副相承的优先级,用户可以调用Thread类的setPriority(int a)来修改
a的取值:
Thread.MIN_PRIORITY,Thread.MAX_PRIORITY,Thread.NORM_PRIORITY
主要方法
启动线程 start()
定义线程操作 run()
使线程休眠 sleep()
sleep(int millsecond) 以毫秒为单位的休眠时间
sleep(int millsecond,int nanosecond) 以纳秒为单位的休眠时间
currentThread() 判断谁在占用CPU的线程

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