《java多线程编程技术核心》读书笔记8

package multiThread;import java.util.*;/** * InheritableThreadLocal 使用方法 * InheritableThreadLocal 可以在子线程中取得父线程继承下来的值 */class InheritableThreadLocalExt extends InheritableThreadLocal{@Overrideprotected Object initialValue(){return new Date().getTime();}@Overrideprotected Object childValue(Object parentValue){return parentValue+"  在子进程中加的";}}class Tool{public static InheritableThreadLocalExt tl = new InheritableThreadLocalExt();}class ThreadA111 extends Thread{@Overridepublic void run(){try{for(int i=0;i<10;i++){System.out.println("ThreadA get value="+Tool.tl.get());Thread.sleep(100);}}catch(InterruptedException e){e.printStackTrace();}}}public class Lesson11 {public static void main(String[] args) {try{for(int i=0;i<10;i++){System.out.println("main get value="+Tool.tl.get());Thread.sleep(100);}Thread.sleep(5000);ThreadA111 a = new ThreadA111();a.start();}catch(InterruptedException e){e.printStackTrace();}}}