18---java中泛型04（泛型的实例）-优快云博客

本文链接：https://blog.youkuaiyun.com/bzuld/article/details/7352914

本文通过具体的Java代码示例介绍了如何使用泛型和接口实现来组织与展示个人信息，包括基本介绍和联系方式等，展示了面向对象编程的灵活性。

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interface Info{//只有此接口的子类是表示人的信息
}
class Contact implements Info{
private String address;//联系地址
private String telphone;//联系方式
private String zipcode;//邮政编码
public Contact(String address,String telphone,String zipcode){
  this.address=address;
  this.telphone=telphone;
  this.zipcode=zipcode;
  }
public void setAddress(String address){
  this.address=address;
  }
public void setTelphone(String telphone){
  this.telphone=telphone;
  }
public void setZipcode(String zipcode){
  this.zipcode=zipcode;
  }
public String getAddress(){
  return this.address;
  }
public String getTelphone(){
  return this.telphone;
  }
public String getZipcode(){
  return this.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+"\n";
  }
}

class Introduction implements Info{
private String name;
private String sex;
private int age;
public Introduction(String name,String sex,int age){
  this.name=name;
  this.sex=sex;
  this.age=age;
  }
public void setName(String name){
  this.name=name;
  }
public void setSex(String sex){
  this.sex=sex;
  }
public void setAge(int age){
  this.age=age;
  }
public String getName(){
  return this.name;
  }
public String getSex(){
  return this.sex;
  }
public int getAge(){
  return this.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+"\n";
  }
}
class Person<T extends Info>{
private T info;
public Person(T info){
  this.info=info;
  }
public void setInfo(T info){
  this.info=info;
  }
public T getInfo(){
  return this.info;
  }
public String toString(){
  return this.info.toString();
  }
}

public class Demo{
public static void main(String args[]){
  Person<Contact> per1=null;
  per1=new Person<Contact>(new Contact("山东","1383838438","210000"));
  System.out.println(per1);
  Person<Introduction> per2=null;
  per2=new Person<Introduction>(new Introduction("lid","男",20));
  System.out.println(per2);
  }
}