继承

子类拥有父类非private属性和方法

package com.lanou.obj;

public class test04 {

public static void main(String[] args) {

}

}

class Animal{

int age;

public Animal(){

}

public Animal(int age){

this.age = age;

}

}

class Tiger extends Animal{

String type;

public Tiger() {

super();

// TODO Auto-generated constructor stub

}

//final修饰的方法不能被重写

public Tiger(String type,int age) {

super(age);//调用父类的构造方法

this.type = type;

//子类重写父类的方法,访问修饰不能更严格

// TODO Auto-generated constructor stub

}

}