java代码实现通讯录实例，我不知道这有什么用。，

运行显示：

Friend:zl,Address:武大樱花美
Colleagues:蔡依林,Department:麻城市人民政府

题目：

1．任务描述

完善上面通讯录名片的例子。

2．技能要点

掌握类继承的方法与技巧。

package com.jay;

//实现通讯录  定义一个ton类。表示名片，命名有误啊
//姓名年龄///源文件：ton.java
public class ton {
	String name;
	String sex;
	String tel;

	public ton() {
	}

	public ton(String name, String sex) {
		this.name = name;
		this.sex = sex;
	}

	public void setName(String a) {
		this.name = a;

	}

	public String getName() {
		return name;
	}

	public void setSex(String b) {
		this.sex = b;
	}

	public String getSex() {
		return sex;
	}

	public void setTel(String t) {
		this.tel = t;

	}

	public String getTel() {
		return tel;
	}

}

2.FriendCard
package com.jay;

public class FriendCard extends ton {
	String address;// 子类新增属性

	public FriendCard(String name) {
		address = name;
	}

	public void setAddress(String a) {
		address = a;
	}

	public String getAddress() {
		return address;
	}

}

3.ColleaguesCard

package com.jay;

public class ColleaguesCard extends ton
{
	String department;
	public ColleaguesCard(String name){
		this.name=name;
	}//这里的构造方法提供了后面直接在创建对象时赋初值
	public void setDepartment(String department){
		this.department=department;

	}public String getDepartment(){
		return department;
	}
}

4.Test.java

package com.jay;

public class ColleaguesCard extends ton
{
	String department;
	public ColleaguesCard(String name){
		this.name=name;
	}//这里的构造方法提供了后面直接在创建对象时赋初值
	public void setDepartment(String department){
		this.department=department;

	}public String getDepartment(){
		return department;
	}
}