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java-multithread singleton包更新至example3,告一段落
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Lines changed: 338 additions & 4 deletions

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‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/MyObject2.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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import java.io.Serializable;
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/**
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* Created by Brian on 2016/4/16.
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*/
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public class MyObject2 implements Serializable {
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private static class MyObjectHandler{
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private static final MyObject2 myObject = new MyObject2();
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}
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private MyObject2(){}
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synchronized public static MyObject2 getInstance(){
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return MyObjectHandler.myObject;
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}
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protected Object readResolve() {
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System.out.println("调用了readResolve方法");
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return MyObjectHandler.myObject;
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/MyObject3.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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public class MyObject3 {
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private static MyObject3 instance = null;
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private MyObject3(){}
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static {
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instance = new MyObject3();
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}
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public static MyObject3 getInstance(){
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return instance;
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/MyObject4.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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public enum MyObject4 {
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ObjectFactory;
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private Object object;
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private MyObject4(){
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try {
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Thread.sleep(3000);//模拟初始化
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object = new Object();
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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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public Object getObject(){
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return object;
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/MyObject5.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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public class MyObject5{
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public enum MyEnumSingleton {
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ObjectFactory;
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private Object object;
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private MyEnumSingleton(){
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try {
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Thread.sleep(3000);//模拟初始化
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object = new Object();
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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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public Object getObject(){
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return object;
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}
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}
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public static Object getObject(){
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return MyEnumSingleton.ObjectFactory.getObject();
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Run3_singleton1.java‎

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/*
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输出:
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1802892302 com.brianway.learning.java.multithread.singleton.example3.MyObject1@65b21710
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1802892302 com.brianway.learning.java.multithread.singleton.example3.MyObject1@65b21710
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1802892302 com.brianway.learning.java.multithread.singleton.example3.MyObject1@65b21710
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418579292 com.brianway.learning.java.multithread.singleton.example3.MyObject1@18f3035c
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418579292 com.brianway.learning.java.multithread.singleton.example3.MyObject1@18f3035c
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418579292 com.brianway.learning.java.multithread.singleton.example3.MyObject1@18f3035c
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Run3_singleton2.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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import java.io.*;
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/**
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* p273
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* 序列化与反序列化的单例模式实现
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*
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*/
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public class Run3_singleton2 {
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public static void main(String[] args) {
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try {
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MyObject2 myObject = MyObject2.getInstance();
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FileOutputStream fos = new FileOutputStream(new File("myObject.txt"));
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ObjectOutputStream oos = new ObjectOutputStream(fos);
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oos.writeObject(myObject);
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oos.close();
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fos.close();
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System.out.println(myObject.hashCode()+" "+ myObject);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}catch (IOException e) {
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e.printStackTrace();
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}
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try {
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FileInputStream fis = new FileInputStream(new File("myObject.txt"));
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ObjectInputStream ios = new ObjectInputStream(fis);
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MyObject2 myObject = (MyObject2) ios.readObject();
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ios.close();
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fis.close();
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System.out.println(myObject.hashCode()+" "+ myObject);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e ){
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e.printStackTrace();
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} catch (ClassNotFoundException 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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325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
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1173230247 com.brianway.learning.java.multithread.singleton.example3.MyObject2@45ee12a7
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------------------------
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取消MyObject2中protected Object readResolve()的注释
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输出:
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325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
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调用了readResolve方法
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325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Run3_singleton3.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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/**
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* p275
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* 使用static代码块实现单例模式
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*/
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public class Run3_singleton3 {
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public static void main(String[] args) {
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Thread3 t1 = new Thread3();
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Thread3 t2 = new Thread3();
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Thread3 t3 = new Thread3();
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t1.start();
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t2.start();
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t3.start();
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}
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}
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/*
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输出:
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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974814630 com.brianway.learning.java.multithread.singleton.example3.MyObject3@3a1a7da6
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Run3_singleton4.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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/**
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* p276
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* 使用enum枚举数据类型实现单例模式
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*/
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public class Run3_singleton4 {
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public static void main(String[] args) {
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Thread4 t1 = new Thread4();
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Thread4 t2 = new Thread4();
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Thread4 t3 = new Thread4();
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t1.start();
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t2.start();
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t3.start();
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}
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}
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/*
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输出:
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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61956794 java.lang.Object@3b162ba
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Run3_singleton5.java‎

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package com.brianway.learning.java.multithread.singleton.example3;
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/**
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* Created by Brian on 2016/4/16.
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*/
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/**
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* p277
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* 使用enum枚举数据类型实现单例模式
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* 完善
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*/
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public class Run3_singleton5 {
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public static void main(String[] args) {
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Thread5 t1 = new Thread5();
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Thread5 t2 = new Thread5();
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Thread5 t3 = new Thread5();
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t1.start();
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t2.start();
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t3.start();
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}
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}
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/*
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输出:
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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541962297 java.lang.Object@204db039
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/singleton/example3/Thread1.java‎

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public class Thread1 extends Thread {
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@Override
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public void run() {
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System.out.println(com.brianway.learning.java.multithread.singleton.example2.MyObject1.getInstance().hashCode()+" "+ MyObject1.getInstance());
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System.out.println(MyObject1.getInstance().hashCode()+" "+ MyObject1.getInstance());
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}
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}

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