testinheritance.java

来自「有关于java中的继承」· Java 代码 · 共 25 行

public class TestInheritance{
	public static void main(String[] args){
		Dog d=new Dog();
		d.sleep();
		Cat c=new Cat();
		c.sleep();
		
	}
}
class Animal{
	public void eat(){
		System.out.println("Animal eat");
	}
	public void sleep(){
		System.out.println("sleep 8 hours");
	}
}
class Dog extends Animal{
	public void sleep(){
		System.out.println("sleep 6 hours");
	}
}
class Cat extends Animal{
}