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,
import java.io.FileReader;import java.io.IOException;public class MyBufferedReader { private FileReader fr;//ivate int count = 0;// 记录...
public interface Api { public void t1();}public class Impl1 implements Api { @Override public void t1(){ System.out.println("方式l2 implements Api{...
public class A { public void t1(){ } public void t2(){ }}//B类想同时拥有: t1(),t2(),t3(),t4(
//饿汉式public class Single { private final static Single s=new Single(); private Single(){ } pubblic 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
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