三木的博客

public interface Api { public void t1();}public class Impl1 implements Api { @Override public void t1(){ System.out.println("方式1的解决方案---一大堆..."); }}public class Impl2 implements Api{...

//饿汉式public class Single { private final static Single s=new Single(); private Single(){ } public static Single getInstance(){ return s; }}public class Client { public static void ...

mport java.util.HashMap;import java.util.Map;public class A { // 缓存(池)一定要有一个容器,而且这个容器是单例 private static Map<String, A> map = new HashMap<String, A>(); // 从池中获取一个对象 public static...

import java.io.FileReader;import java.io.IOException;public class MyBufferedReader { private FileReader fr;// 先要有个包装对象 private char[] buf = new char[1024];// new一个缓存 private int count = 0;// 记录...

在java SE中 叫值对象（valueObject）在java EE中叫 javabeanimport java.io.Serializable;//值对象的命名规范: ***ValueObject, ***VO, ***Model, ***public class UserModel implements Serializable{ /** * */ private ...

public class A { public void t1(){ } public void t2(){ }}//B类想同时拥有: t1(),t2(),t3(),t4(),t5(),t6()的功能//相比B类更好的设计方式: 优先对象组合而非继承public class B extends A{ public void t3(){ } pub...