嗯问个bc的问题，错在哪里了？胡思乱想写出来的，刚学，格式是按ls教的写的。

package eclipse;

public class Pet {
        String color;
        int weight;
        void setcolor() {
            
        }
        void setweight() {
            
        }
}

package eclipse;

public class Cat extends Pet{
    private String color;
    private double weight;
    void setcat(String color,double weight) {
        this.color=color;
        this.weight=weight;
    }
    String getcolor() {
        return color;
    }
    void setcolor() {
        System.out.println("猫的颜色是："+getcolor());
    }
    double getweight() {
        return weight;
    }
    void setweight() {
        System.out.println("猫的体重是："+getweight());
    }
}

package eclipse;

public class Dog extends Pet{
    private String color;
    private double weight;
    void setdog(String color,double weight) {
        this.color=color;
        this.weight=weight;
    }
    String getcolor() {
        return color;
    }
    void setcolor() {
        System.out.println("狗的颜色是："+getcolor());
    }
    double getweight() {
        return weight;
    }
    void setweight() {
        System.out.println("狗的体重是："+getweight());
    }
}

package eclipse;

public class Rabbit extends Pet{
    private String color;
    private double weight;
    void setrabbit(String color,double weight) {
        this.color=color;
        this.weight=weight;
    }
    String getcolor() {
        return color;
    }
    void setcolor() {
        System.out.println("兔子的颜色是："+getcolor());
    }
    double getweight() {
        return weight;
    }
    void setweight() {
        System.out.println("兔子的体重是："+getweight());
    }
}

package eclipse;

public class 测试类 {
    static String white;
    public static void main(String[] args) {
        Dog dog=new Dog();
        dog.setcolor();
        dog.setdog(white, 127.8);
        dog.setcolor();
        dog.getweight();
        dog.setweight();
        Rabbit rabbit=new Rabbit();
        rabbit.setrabbit(white, 79.5);
        rabbit.setcolor();
        rabbit.getweight();
        rabbit.setweight();
        Cat cat=new Cat();
        cat.setcat(white, 84.6);
        cat.getcolor();
        cat.setcolor();
        cat.getweight();
        cat.setweight();
    }

}

仔细查查

没错吧。
有什么错吗？