Java抽象類實例

package com.pku.wuyu.io;

abstract class Person{
	private String name ;		// 定义name属性
	private int age ;			// 定义age属性
	public Person(String name,int age){
		this.name = name ;
		this.age = age ;
	}
	public void setName(String name){
		this.name = name ;
	}
	public void setAge(int age){
		this.age = age ;
	}
	public String getName(){
		return this.name ;
	}
	public int getAge(){
		return this.age ;
	}
	public abstract String getInfo() ;	// 抽象方法
};
class Student extends Person{
	private String school ;
	public Student(String name,int age,String school){
		super(name,age) ;	// 指定要调用抽象类中有两个参数的构造方法
		this.school = school ;
	}
	public void setSchool(String school){
		this.school = school ;
	}
	public String getSchool(){
		return this.school ;
	}
	public String getInfo(){
		return	"姓名：" + super.getName()  + 
				"；年龄：" + super.getAge() + 
				"；学校：" + this.getSchool() ;
	}
};
public class Demo01
{
	public static void main(String args[]){
		Student stu = new Student("张三",30,"清华大学") ;
		System.out.println(stu.getInfo()) ;
	}
};