二十三种设计模式JAVA实现

二十三种设计模式JAVA实现

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>design_pattern</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding/<project>=UTF-8

.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.7
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.7

src/js/com/adapter/Adaptee.java

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+package js.com.adapter;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class Adaptee {
+    public void specificRequest(){
+        System.out.println("特殊请求");
+    }
+}

src/js/com/adapter/Adapter.java

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+package js.com.adapter;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class Adapter extends Target{
+    private Adaptee adaptee = new Adaptee();
+
+    @Override
+    public void request() {
+        adaptee.specificRequest();
+    }
+}

src/js/com/adapter/Client.java

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+package js.com.adapter;
+
+/**
+ * 适配器模式
+ * Created by Administrator on 2015/4/23.
+ */
+public class Client {
+    public static void main(String[] args) {
+        Target target = new Adapter();
+        target.request();
+    }
+}

src/js/com/adapter/Target.java

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+package js.com.adapter;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class Target {
+    public void request(){
+        System.out.println("普通请求");
+    }
+}

src/js/com/bridge/Abstraction.java

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+package js.com.bridge;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class Abstraction {
+    protected Implementor implementor;
+
+    public void setImplementor(Implementor implementor) {
+        this.implementor = implementor;
+    }
+
+    public void operation(){
+        implementor.operation();
+    }
+}

src/js/com/bridge/Client.java

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+package js.com.bridge;
+
+/**
+ * 桥接模式
+ * Created by Administrator on 2015/4/23.
+ */
+public class Client {
+    public static void main(String[] args) {
+        Abstraction ab = new RefinedAbstraction();
+        ab.setImplementor(new ConcreteImplementorA());
+        ab.operation();
+
+        ab.setImplementor(new ConcreteImplementorB());
+        ab.operation();
+    }
+}

src/js/com/bridge/ConcreteImplementorA.java

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+package js.com.bridge;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class ConcreteImplementorA implements  Implementor {
+    @Override
+    public void operation() {
+        System.out.println("具体实现A的方法执行");
+    }
+}

src/js/com/bridge/ConcreteImplementorB.java

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+package js.com.bridge;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class ConcreteImplementorB implements Implementor {
+    @Override
+    public void operation() {
+        System.out.println("具体实现B的方法执行");
+    }
+}

src/js/com/bridge/Implementor.java

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+package js.com.bridge;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public interface Implementor {
+    public void operation();
+}

src/js/com/bridge/RefinedAbstraction.java

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+package js.com.bridge;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class RefinedAbstraction extends Abstraction {
+    @Override
+    public void operation() {
+        implementor.operation();
+    }
+}

src/js/com/build/Builder.java

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+package js.com.build;
+
+/**
+ * Created by Administrator on 2015/4/22.
+ */
+public abstract class Builder {
+
+    public abstract void builderPartA();
+
+    public abstract void builderPartB();
+
+    public abstract Product getResult();
+}

src/js/com/build/Client.java

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+package js.com.build;
+
+/**
+ * 创建模式，和工厂模式不同是这货用来创建复杂模型
+ * 具体的Builder引用了Product，再让Director指挥builder去执行builder的创建方法。
+ * 然后再自行返回Product
+ * Created by Administrator on 2015/4/22.
+ */
+public class Client {
+    public static void main(String[] args) {
+        Director director = new Director();
+
+        Builder b1 = new ConcreteBuilder1();
+        Builder b2 = new ConcreteBuilder2();
+
+        director.construct(b1);;
+        Product p1 = b1.getResult();
+        p1.show();
+
+        director.construct(b2);
+        Product p2 = b2.getResult();
+        p2.show();
+    }
+}

src/js/com/build/ConcreteBuilder1.java

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+package js.com.build;
+
+/**
+ * Created by Administrator on 2015/4/22.
+ */
+public class ConcreteBuilder1 extends  Builder {
+
+    private Product product = new Product();
+
+    @Override
+    public void builderPartA() {
+        product.add("部件A");
+    }
+
+    @Override
+    public void builderPartB() {
+        product.add("部件B");
+    }
+
+    @Override
+    public Product getResult() {
+        return product;
+    }
+}

src/js/com/build/ConcreteBuilder2.java

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+package js.com.build;
+
+/**
+ * Created by Administrator on 2015/4/22.
+ */
+public class ConcreteBuilder2 extends  Builder {
+
+    private Product product = new Product();
+
+    @Override
+    public void builderPartA() {
+        product.add("部件X");
+    }
+
+    @Override
+    public void builderPartB() {
+        product.add("部件Y");
+    }
+
+    @Override
+    public Product getResult() {
+        return product;
+    }
+}

src/js/com/build/Director.java

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+package js.com.build;
+
+/**
+ * Created by Administrator on 2015/4/22.
+ */
+public class Director {
+    public void construct(Builder builder){
+        builder.builderPartA();
+        builder.builderPartB();
+    }
+}

src/js/com/build/Product.java

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+package js.com.build;
+
+import java.util.*;
+
+/**
+ * Created by Administrator on 2015/4/22.
+ */
+public class Product {
+    List<String> parts = new ArrayList();
+    public void add(String part){
+        parts.add(part);
+    }
+
+    public void show(){
+        System.out.println("产品创建");
+        for (int i = 0; i < parts.size(); i++) {
+            System.out.println(parts.get(i));
+        }
+    }
+}

src/js/com/chain_of_responsibility/Client.java

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+package js.com.chain_of_responsibility;
+
+/**
+ * 责任链模式
+ * Created by Administrator on 2015/4/23.
+ */
+public class Client {
+    public static void main(String[] args) {
+        Handler h1 = new ConcreteHandle1();
+        Handler h2 = new ConcreteHandle2();
+        Handler h3 = new ConcreteHandle3();
+        h1.setSuccessor(h2);
+        h2.setSuccessor(h3);
+
+        int[] requests = new int[]{2, 5, 12, 7, 28, 23, 18, 11};
+
+        for(int i=0; i<requests.length; i++){
+            h1.handleRequest(requests[i]);
+        }
+
+    }
+}
+

src/js/com/chain_of_responsibility/ConcreteHandle1.java

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+package js.com.chain_of_responsibility;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class ConcreteHandle1 extends Handler {
+
+    @Override
+    public void handleRequest(int request) {
+        if(request >= 0 && request < 10){
+            System.out.println(this.getClass().getSimpleName() + " handle " + request);
+        }else if (successor != null){
+            successor.handleRequest(request);
+        }
+    }
+}

src/js/com/chain_of_responsibility/ConcreteHandle2.java

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+package js.com.chain_of_responsibility;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class ConcreteHandle2 extends Handler  {
+    @Override
+    public void handleRequest(int request) {
+        if(request >= 10 && request < 20){
+            System.out.println(this.getClass().getSimpleName() + " handle " + request);
+        }else if (successor != null){
+            successor.handleRequest(request);
+        }
+    }
+}

src/js/com/chain_of_responsibility/ConcreteHandle3.java

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+package js.com.chain_of_responsibility;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public class ConcreteHandle3 extends Handler{
+    @Override
+    public void handleRequest(int request) {
+        if(request >= 20 && request < 30){
+            System.out.println(this.getClass().getSimpleName() + " handle " + request);
+        }else if (successor != null){
+            successor.handleRequest(request);
+        }
+    }
+}

src/js/com/chain_of_responsibility/Handler.java

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+package js.com.chain_of_responsibility;
+
+/**
+ * Created by Administrator on 2015/4/23.
+ */
+public abstract class Handler {
+
+    protected Handler successor;
+
+    public void setSuccessor(Handler successor){
+        this.successor = successor;
+    }
+
+    public abstract void handleRequest(int request);
+
+}

src/js/com/command/Client.java

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+package js.com.command;
+
+/**
+ * 命令模式
+ * Created by Administrator on 2015/4/23.
+ */
+public class Client {
+    public static void main(String[] args) {
+        Receiver r = new Receiver();
+        Command c = new ConcreteCommand(r);
+        Invoker i = new Invoker();
+        i.setCommand(c);
+        i.executeCommand();
+    }
+}