package com.example;

 /**

  * Created by Y on 16/4/13.

  */

 public class People {

     private String name;

     private int age;

     public void setName(String name) {

         this.name = name;

     }

     public String getName() {

         return name;

     }

     public int getAge() {

         return age;

     }

     public void setAge(int age) {

         this.age = age;

     }

     public void tell(){

         System.out.println("name is:"+this.getName()+"age is :"+this.getAge());

     }

 }

 package com.example;

 /**

  * Created by Y on 16/4/13.

  */

 public class People {

     private String name;

     private int age;

     public People(){

         System.out.println("这是无参数构造方法！");

     }

     public People(String name,int age){

         this();

         this.name = name;

         this.age = age;

     }

 }

 package com.example;

 /**

  * Created by Y on 16/4/13.

  */

 public class People {

     public void tell(){

         System.out.print(this);

     }

 }