public class People{
     public String name;
     public char sex;
     public int age;
     public String Idcard;
     //1ֹ캯һκβĹ캯
     public People(){
     }//2ֹ캯вĹ캯
     public People(String name,int age,String Idcard){
           this.name = name;
           this.age = age;
           this.Idcard = Idcard;
     }
}
