咖啡分为大杯咖啡和中杯咖啡，咖啡又分为牛奶咖啡和法式咖啡，java代码实现桥接模式

下面是Java代码实现桥接模式：

首先定义一个咖啡接口：

public interface Coffee {
    void makeCoffee();
}

接着定义大杯咖啡和中杯咖啡的实现类：

public class LargeCoffee implements Coffee {
    private CoffeeAdditives additives;

    public LargeCoffee(CoffeeAdditives additives) {
        this.additives = additives;
    }

    @Override
    public void makeCoffee() {
        System.out.print("制作大杯咖啡 ");
        additives.addSomething();
    }
}

public class MediumCoffee implements Coffee {
    private CoffeeAdditives additives;

    public MediumCoffee(CoffeeAdditives additives) {
        this.additives = additives;
    }

    @Override
    public void makeCoffee() {
        System.out.print("制作中杯咖啡 ");
        additives.addSomething();
    }
}

再定义牛奶咖啡和法式咖啡的实现类：

public class MilkCoffeeAdditives implements CoffeeAdditives {
    @Override
    public void addSomething() {
        System.out.println("加入牛奶");
    }
}

public class FrenchCoffeeAdditives implements CoffeeAdditives {
    @Override
    public void addSomething() {
        System.out.println("加入法式奶油");
    }
}

最后，定义一个测试类：

public class BridgeTest {
    public static void main(String[] args) {
        CoffeeAdditives milk = new MilkCoffeeAdditives();
        CoffeeAdditives french = new FrenchCoffeeAdditives();

        Coffee largeMilkCoffee = new LargeCoffee(milk);
        largeMilkCoffee.makeCoffee();

        Coffee mediumFrenchCoffee = new MediumCoffee(french);
        mediumFrenchCoffee.makeCoffee();
    }
}

运行结果：

制作大杯咖啡 加入牛奶
制作中杯咖啡 加入法式奶油

这里使用了桥接模式，将咖啡和咖啡添加物分离开来，使得它们可以独立变化，而不会相互影响。这样可以更加灵活地组合不同的咖啡和添加物，实现不同口味的咖啡。