Java方法的覆盖与隐藏的区别分析

public class RunTime {

    public static void main(String[] args) {
        Animal a = new Cat();
        System.out.println(a.A);
        System.out.println(a.b);
        a.voice();
        a.method();

    }

}

class Dog extends Animal {
    public int b = 3;
    public static int A = 3;
    public static void method(){
        System.out.println("狗");
    }
    public void voice() {
        System.out.println("狗叫");
    }
}

class Cat extends Animal {
    public int b = 4;
    public static int A = 4;
    public static void method(){
        System.out.println("猫");
    }
    public void voice() {
        System.out.println("猫叫");
    }
}

class Animal {
    public int b = 0;
    public static int A = 0;
    public static void method(){
        System.out.println("动物");
    }
    public void voice() {
        System.out.println("动物叫");
    }
}