java練習---10

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 1 package cn.zrjh; 2  3 public class L { 4  5          public int id; 6         public String name; 7         public int age; 8         public String city; 9         public String introduce() {10             return  + id +  ":   在下  " + name + ", 芳齡" + age + ", 家住" + city ;11         }  12     13 14 }

 1 package cn.zrjh; 2  3 public class Y { 4  5     public static void main(String[] args) { 6         L p1=new L(); 7         L p2=new L(); 8         L p3=new L(); 9         L p4=new L();10         p1.id=100000;   p1.name="羅元昊";   p1.age=19;   p1.city="418";11         p2.id=200000;   p2.name="孔宏旭";   p2.age=18;   p2.city="418";12         p3.id=300000;   p3.name="於星曄";   p3.age=19;   p3.city="418";13         p4.id=400000;   p4.name="黃浩然";   p4.age=19;   p4.city="418";14         System.out.println(p1.introduce());15         System.out.println(p2.introduce());16         System.out.println(p3.introduce());17         System.out.println(p4.introduce());18 19     }20 21 }

 

java練習---10