Java第二次作业

import java.util.Scanner;
class Person 
{
     String name;
     char sex;
     int age;
     String IdCard;
    public void printf()
    {
        System.out.print("姓名是："+name+"   ");
        System.out.print("性别是："+sex+"   ");
        System.out.print("年龄是："+age+"   ");
        System.out.println("身份证号码是："+IdCard);
    }
}  

import java.util.Scanner;
 class Phone
 {
     String Phonebrand;   
        String Phonemodel;  
   public void printf()
   {
      System.out.print("该手机的品牌是："+Phonebrand+"  ");
      System.out.println("手机型号是："+Phonemodel);
   }
   
     public Phone(String Phonebrand,String Phonemodel) 
     {
         this.Phonebrand=Phonebrand;
         this.Phonemodel=Phonemodel;
     }
 }

老师，我只会弄到这个地方。