大话设计模式-适配器模式的实践-姚明的翻译者

球员抽象类

public abstract class Player {
    protected String name;

    public Player(String name) {
        this.name = name;
    }

    public abstract void attack();

    public abstract void defense();
}

三种不同的球员

/** * 前锋 */
public class Forwards extends Player {
    public Forwards(String name) {
        super(name);
    }

    @Override
    public void attack() {
        System.out.println(name + " 前锋进攻");
    }

    @Override
    public void defense() {
        System.out.println(name + " 前锋防守");
    }
}

/** * 中锋 */
public class Center extends Player {
    public Center(String name) {
        super(name);
    }

    @Override
    public void attack() {
        System.out.println(name + " 中锋进攻");
    }

    @Override
    public void defense() {
        System.out.println(name + " 中锋防守");
    }
}

/** * 后卫 */
public class Guards extends Player {
    public Guards(String name) {
        super(name);
    }

    @Override
    public void attack() {
        System.out.println(name + " 后卫进攻");
    }

    @Override
    public void defense() {
        System.out.println(name + " 后卫防守");
    }
}

不懂英语的外籍球员

public class ForeignCenter {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    /** * 外籍中锋只懂中文拼音 */
    public void jingong() {
        System.out.println(name + " 外籍中锋进攻");
    }

    public void fangshou() {
        System.out.println(name + " 外籍中锋防守");
    }
}

作为外籍球员适配器的翻译者

public class Translator extends Player {

    private ForeignCenter foreignCenter = new ForeignCenter();

    public Translator(String name) {
        super(name);
        foreignCenter.setName(name);
    }

    @Override
    public void attack() {
        foreignCenter.jingong();
    }

    @Override
    public void defense() {
        foreignCenter.fangshou();
    }
}

测试主类

public class Main {
    public static void main(String[] args) {
        Player a = new Forwards("巴蒂尔");
        a.attack();

        Player b = new Guards("麦克格雷迪");
        b.attack();

        Player c = new Translator("姚明");
        c.attack();
        c.defense();

    }
}

输出结果

巴蒂尔 前锋进攻
麦克格雷迪 后卫进攻
姚明 外籍中锋进攻
姚明 外籍中锋防守