为接口类型的实例属性动态赋值

public interface IAnimal {
    void speak();
    String getName();
}

public class Dog implements IAnimal {
    private String name;
    
    public Dog(String name) {
        this.name = name;
    }
    
    public void speak() {
        System.out.println("汪汪汪");
    }
    
    public String getName() {
        return name;
    }
}

public class Cat implements IAnimal {
    private String name;
    
    public Cat(String name) {
        this.name = name;
    }
    
    public void speak() {
        System.out.println("喵喵喵");
    }
    
    public String getName() {
        return name;
    }
}

public class AnimalFactory {
    public static IAnimal createAnimal(String type, String name) {
        if (type.equals("dog")) {
            return new Dog(name);
        } else if (type.equals("cat")) {
            return new Cat(name);
        } else {
            throw new IllegalArgumentException("Invalid animal type");
        }
    }
}

public class Main {
    public static void main(String[] args) {
        IAnimal dog = AnimalFactory.createAnimal("dog", "旺财");
        IAnimal cat = AnimalFactory.createAnimal("cat", "小花");
        
        System.out.println(dog.getName());  // 输出：旺财
        System.out.println(cat.getName());  // 输出：小花
    }
}