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java-multihread 更新至 example16，synchronized包暂时结束
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‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example15/Run15_synchronized.java

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package com.brianway.learning.java.multithread.synchronize.example15;
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/**
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* Created by Brian on 2016/4/13.
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*/
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/**
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* P130
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* sychronized代码块有volatile同步的功能
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*/
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public class Run15_synchronized {
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public static void main(String[] args) {
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try {
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RunThread2 t = new RunThread2();
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t.start();
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Thread.sleep(1000);
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t.setRunning(false);
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System.out.println("已经赋值为false");
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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/*
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输出：
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进入run了
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线程被停止了
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已经赋值为false
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-----------------
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注释掉RunThread2类中的synchronized ("any thing"){}
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输出：
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进入run了
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已经赋值为false
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example15/Run15_volatile.java

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package com.brianway.learning.java.multithread.synchronize.example15;
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/**
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* Created by Brian on 2016/4/13.
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*/
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/**
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* P121
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* 不使用volatile关键字
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* JVM配置 -server(IDEA15.02，jdk1.8,WIN7,64bit不加效果也是的)
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*/
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public class Run15_volatile {
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public static void main(String[] args) {
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try {
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RunThread t = new RunThread();
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t.start();
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Thread.sleep(1000);
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t.setRunning(false);
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System.out.println("已经赋值为false");
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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/*
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输出：
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进入run了
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已经赋值为false
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--------------
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加上volatile关键字后
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输出：
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进入run了
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已经赋值为false
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线程被停止了
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example15/RunThread.java

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package com.brianway.learning.java.multithread.synchronize.example15;
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/**
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* Created by Brian on 2016/4/13.
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*/
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public class RunThread extends Thread{
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private boolean isRunning = true;
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//volatile private boolean isRunning = true;
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public boolean isRunning(){
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return isRunning;
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}
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public void setRunning(boolean running) {
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isRunning = running;
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}
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@Override
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public void run() {
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System.out.println("进入run了");
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while(isRunning == true ){
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}
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System.out.println("线程被停止了");
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example15/RunThread2.java

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package com.brianway.learning.java.multithread.synchronize.example15;
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/**
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* Created by Brian on 2016/4/13.
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*/
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public class RunThread2 extends Thread{
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private boolean isRunning = true;
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public boolean isRunning(){
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return isRunning;
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}
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public void setRunning(boolean running) {
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isRunning = running;
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}
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@Override
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public void run() {
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System.out.println("进入run了");
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while(isRunning == true ){
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synchronized ("any thing"){}
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}
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System.out.println("线程被停止了");
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example16/MyThread.java

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package com.brianway.learning.java.multithread.synchronize.example16;
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/**
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* Created by Brian on 2016/4/13.
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*/
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public class MyThread extends Thread {
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volatile public static int count;
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//synchronized
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private static void addCount(){
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for(int i=0;i<100;i++) {
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count++;
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}
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System.out.println("count="+count);
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}
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@Override
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public void run() {
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addCount();
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/synchronize/example16/Run16_volatile.java

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package com.brianway.learning.java.multithread.synchronize.example16;
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/**
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* Created by Brian on 2016/4/13.
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*/
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/**
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* P124
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* volatile非原子的特性
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*/
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public class Run16_volatile {
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public static void main(String[] args) {
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MyThread[] myThreads = new MyThread[100];
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for(int i=0;i<100;i++){
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myThreads[i]= new MyThread();
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}
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for(int i=0;i<100;i++){
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myThreads[i].start();
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}
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}
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}
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/*
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addCount不加synchronized
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输出：
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count=200
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count=200
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count=300
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count=400
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count=500
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count=600
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count=700
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count=800
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count=900
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count=1000
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count=1100
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count=1200
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count=1300
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count=1400
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count=1500
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count=1600
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count=1700
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count=1800
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count=1900
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count=2000
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count=2100
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count=2200
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count=2300
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count=2400
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count=2500
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count=2600
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count=2700
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count=2800
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count=2900
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count=3000
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count=3100
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count=3200
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count=3300
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count=3400
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count=3500
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count=3600
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count=3700
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count=3800
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count=3900
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count=4000
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count=4100
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count=4200
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count=4300
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count=4400
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count=4500
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9456
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count=9556
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count=9456
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count=9656
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count=9756
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count=9756
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count=9756
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count=9856
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count=9456
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count=9456
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count=9456
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count=9456
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9756
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count=9756
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count=9656
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count=9556
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count=9556
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count=9956
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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count=9856
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-----------------------------
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addCount()加synchronized
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输出：
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count=100
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count=200
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count=300
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count=400
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count=500
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count=600
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count=700
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count=800
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count=900
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count=1000
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count=1100
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count=1200
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count=1300
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count=1400
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count=1500
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count=1600
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count=1700
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count=1800
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count=1900
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count=2000
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count=2100
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count=2200
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count=2300
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count=2400
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count=2500
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count=2600
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count=2700
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count=2800
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count=2900
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count=3000
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count=3100
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count=3200
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count=3300
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count=3400
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count=3500
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count=3600
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count=3700
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count=3800
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count=3900
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count=4000
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count=4100
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count=4200
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count=4300
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count=4400
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count=4500
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count=4600
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count=4700
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count=4800
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count=4900
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count=5000
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count=5100
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count=5200
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count=5300
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count=5400
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count=5500
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count=5600
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count=5700
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count=5800
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count=5900
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count=6000
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count=6100
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count=6200
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count=6300
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count=6400
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count=6500
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count=6600
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count=6700
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count=6800
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count=6900
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count=7000
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count=7100
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count=7200
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count=7300
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count=7400
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count=7500
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count=7600
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count=7700
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count=7800
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count=7900
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count=8000
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count=8100
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count=8200
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count=8300
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count=8400
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count=8500
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count=8600
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count=8700
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count=8800
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count=8900
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count=9000
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count=9100
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count=9200
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count=9300
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count=9400
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count=9500
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count=9600
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count=9700
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count=9800
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count=9900
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count=10000
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*/

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