ThreadLocal操作

package first;import java.util.concurrent.TimeUnit;public class ThreadLocals {    static ThreadLocal<Integer> locals = new ThreadLocal<Integer>() {// 定义一个共享的 ThreadLocal，在不同的线程里面保存的值不同，都是保存protected Integer initialValue() {return 1;};//当前线程的值的,你不能控制它操作哪个线程,因为它操作的就是当前 lcoals变量所在的那个xgtk    };    public static void main(String args[]) {Thread t = new Thread(new Runnable() {    @Override    public void run() {System.out.println("开始设置线程"+Thread.currentThread().getName());locals.set(10);try {    TimeUnit.SECONDS.sleep(1);}catch(InterruptedException e) {}System.out.println("开始读取线程"+Thread.currentThread().getName());System.out.println(locals.get());    }});t.start();System.out.println("开始设置线程"+Thread.currentThread().getName());locals.set(20);try {    TimeUnit.SECONDS.sleep(2);}catch(InterruptedException e) {}System.out.println("开始读取线程"+Thread.currentThread().getName());System.out.println(locals.get());    }}