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1 命令模式2 执行代码interface Command{ public void execute(); } class Stock{ private String name = "alibaba"; private int amount = 10; public void buy(){ System.out.println("buy"); ...

1 解释器模式2 实现代码interface Expression{ public boolean interpret(String context); } class TerminalExpression implements Expression{ private String data; public TerminalExpression(String data){ ...

1  过滤器模式2         class Person{ private String gender; private String marital; public Person(String gender, String marital){ this.gender = gender; this.marital = marital; ...

1 迭代器模式2 实现代码interface Iterator{ public boolean hasNext(); public Object next(); } interface Container{ public Iterator getIterator(); } class NameContainer implements Container{ priva...

1 中介者模式2 实现class Chatroom{ public static void showMessage(String name, String message){ System.out.println(name + ":" + message); } } class User{ private String name; public Us...

1 备忘录模式 2 实现代码import java.util.ArrayList; import java.util.List; class Memento{ private String state; public Memento(String state) { this.state = state; } public String getStat...

1 组合模式2 代码实现class Employee{ private String name; private String dept; private List<Employee> employees; public Employee(String name, String dept){ this.name = name; ...

1 装饰器模式 2 实现 interface Shape{ public void draw(); } class Rectangle implements Shape{ @Override public void draw() { System.out.println("rectangle"); } } class Circle impleme...

1 观察者模式2 实现代码class Subject{ private List<Observer> observerList = new ArrayList<>(); private int state; public int getState() { return state; } public void se...

1 状态模式2 代码实现 interface State{ public void doAction(Context context); } class Context{ private State state; public Context() { this.state = null; } public State getState()...

1 空对象模式2 代码实现。 import javax.sound.midi.Soundbank; abstract class Customer{ protected String name; abstract boolean isNull(); abstract String getName(); } class RealCustomer extends Custo...

1 策略模式2 代码实现。  interface Strategy{ public int executeOperation(int x, int y); } class AddOperation implements Strategy{ @Override public int executeOperation(int x, int y) { retur...

1 模板模式2 实现。 abstract class Game{ public abstract void start(); public abstract void end(); public final void play(){ start(); end(); } } class Cricket extends Game{ ...

1 访问者模式2 实现。     interface ComputerPart{ public void accept(Visitor visitor); } class Mouse implements ComputerPart{ @Override public void accept(Visitor visitor) { visitor.visitMo...

1 外观模式2 实现代码 interface Shape{ public void draw(); } class Rectangle implements Shape{ @Override public void draw() { System.out.println("rectangle"); } } class Circle implement...

1 享元模式2 实现代码interface Shape{ public void draw(); } class Circle implements Shape{ private String color; private int radius; public Circle(String color){ this.color = color; ...

1 适配器模式2 代码interface AdvancePlayer{ public void playMp4(); public void playVlc(); } class VlcPlayer implements AdvancePlayer{ @Override public void playMp4() { } @Override ...

1 责任链模式2 实现代码     abstract class AbstractLogger{ public static int Info = 1; public static int Error = 3; protected int level; protected AbstractLogger nextLogger; public void s...

1 工厂方法模式2 interface Shape{ public void draw(); } class Rectangle implements Shape{ @Override public void draw() { System.out.println("Draw rectangle"); ...

1 抽象工厂模式2 代码实现interface Shape{ public void draw(); } class Rectangle implements Shape{ @Override public void draw() { System.out.println("draw rectangle"); } } class Square imp...

1 单例模式2 代码实现class Singleton{ private static Singleton singleton = new Singleton(); private Singleton(){ } public static Singleton getSingleton(){ System.out.println("this is si...

1 原型模式2 代码abstract class Shape{ protected String type; public String getType() { System.out.println(type); return type; } } class Rectangle extends Shape{ public Rectan...

1 代理模式2 实现代码interface Image{ public void draw(); } class RealImage implements Image{ private String name; public RealImage(String name){ this.name = name; } @Override p...