9.本地线程(ThreadLoca)

ThreadLoca

提高一个线程的局部变量，访问某个线程都有自己的局部变量，当使用ThreadLoca为每个使用该变量的线程提供独立的变量副本，所以每一个线程都可以独立的改变自己的副本，二不会影响到其它线程对应的副本

 

package com.jlong;

 

class Res{

    ThreadLocal<Integer> threadLocal = new ThreadLocal<Integer>(){

        @Override

        protected Integer initialValue() {

            return 0;

        }

    };

}

class ThreadLoca extends Thread{

    private Res res;

   public ThreadLoca(Res res){

        this.res=res;

    }

    @Override

    public void run() {

        for (int i = 0; i <3 ; i++) {

            System.out.println(getName()+"----"+i);

        }

    }

}

 

public class ThreadLocaTest {

    public static void main(String[] args) {

        Res res = new Res();

        ThreadLoca threadLoca1 = new ThreadLoca(res);

        ThreadLoca threadLoca2 = new ThreadLoca(res);

        threadLoca1.start();

        threadLoca2.start();

 

    }

 

}