定义一个Person类,并为之定义联系方式和基本信息等属性。
package book;
interface Info{//定义一个标识接口,此接口没有定义任何方法
}
//定义联系方式类,实现Info接口
class Contact implements Info{
private String address;
private String telphone;
private String zipcode;
public Contact(String address,String telphone,String zipcode) {
this.setAddress(address);
this.setTelphone(telphone);
this.setZipcode(zipcode);
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTelphone() {
return telphone;
}
public void setTelphone(String telphone) {
this.telphone = telphone;
}
public String getZipcode() {
return zipcode;
}
public void setZipcode(String zipcode) {
this.zipcode = zipcode;
}
public String toString() {
return "联系方式:"+"\n"+
"\t|-联系电话:"+this.telphone+"\n"+
"\t|-联系地址:"+this.address+"\n"+
"\t|-邮政编码:"+this.zipcode;
}
}
//定义个人信息类,实现Info接口
class Introduction implements Info{
private String name;
private String sex;
private int age;
public Introduction(String name,String sex,int age) {
this.setName(name);
this.setSex(sex);
this.setAge(age);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String toString() {
return "基本信息:"+"\n"+
"\t|-姓名:"+this.name+"\n"+
"\t|-性别:"+this.sex+"\n"+
"\t|-年龄:"+this.age;
}
}
//定义Person类,Person类中的info属性的类型使用泛型
class Person<T extends Info>{
private T info;
public Person(T info) {
this.setInfo(info);
}
public T getInfo() {
return info;
}
public void setInfo(T info) {
this.info = info;
}
public String toString() {
return this.info.toString();
}
}
//将Contact类型设置为泛型类型
public class JiOu{
public static void main(String args[]) {
Person<Contact>per1 = null;
Person<Introduction>per2 = null;
per1 = new Person<Contact>(new Contact("广州市","15626164101","510520"));
per2 = new Person<Introduction>(new Introduction("smc","男",22));
System.out.println(per1);
System.out.println(per2);
}
}
运行结果:
联系方式:
|-联系电话:15626164101
|-联系地址:广州市
|-邮政编码:510520
基本信息:
|-姓名:smc
|-性别:男
|-年龄:22