java练习---10

 package cn.zrjh;

 public class L {

          public int id;
         public String name;
         public int age;
         public String city;
         public String introduce() {
             return  + id +  ":   在下  " + name + ", 芳龄" + age + ", 家住" + city ;
         }  

 }

 package cn.zrjh;

 public class Y {

     public static void main(String[] args) {
         L p1=new L();
         L p2=new L();
         L p3=new L();
         L p4=new L();
         p1.id=100000;   p1.name="罗元昊";   p1.age=19;   p1.city="418";
         p2.id=200000;   p2.name="孔宏旭";   p2.age=18;   p2.city="418";
         p3.id=300000;   p3.name="于星晔";   p3.age=19;   p3.city="418";
         p4.id=400000;   p4.name="黄浩然";   p4.age=19;   p4.city="418";
         System.out.println(p1.introduce());
         System.out.println(p2.introduce());
         System.out.println(p3.introduce());
         System.out.println(p4.introduce());

     }

 }