使用Java中的多個類創建程序時遇到問題

Question

我正在嘗試創建一個程序，其中用戶輸入四位數字並給出六位數字。前四位數字是用戶在第五位數字是（（digit1 + digit2 + digit4）％10）時輸入的內容，第六位數字是第三位數字。這是我到目前爲止。已經提供了用於用戶輸入的類。任何幫助表示讚賞。

import java.lang.Math; 

/** 
* Purpose: This class/program generates a 6 digit card number based on 4 digits inputed by the user 
*/ 
public class CardGenerator 
{ 
    public void main(String[] args) 
    {  
     UserInteraction input = new UserInteraction(); 
     calculateDigit5 digit5Calc = new calculateDigit5(); 
     getDigit digit = new getDigit(); 
     getRemainder remainder = new getRemainder(); 

     int number = input.getIntValueFromUser("Enter the four digit card number"), 
      digit1 = getDigit(number, 3), 
      number = getRemainder(number, 3), 
      digit2 = getDigit(number, 2), 
      number = getRemainder(number, 2), 
      digit3 = getDigit(number, 1), 
      number = getRemainder(number, 1), 
      digit4 = getDigit(number, 0), 
      digit5 = calculateDigit5, 
      digit6 = digit3; 

     System.out.println("The 6 digit card number is " + digit1 + digit2 + digit3 + digit4 + digit5 
     + digit6); 
    } 

    public class getDigit 
    { 
    int digitWeight = Math.pow(number, (1/1000)), 
       rem = getRemainder(number, digitPosition), 
       digit = (originalNumber - rem)/digitWeight; 


    } 

    public class getRamainder 
    { 

    } 

    public class calculateDigit5 
    { 
    int digit5 = (digit1 + digit2 + digit4) % 10; 
    } 
} 

這是我

import java.util.*; 
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it 
public class UserInteraction 
{ 
    public String getStringValueFromUser(String message) 
    { 
     String value = ""; 
     Scanner input = new Scanner(System.in); 
     System.out.print(message + " : "); 
     value = input.nextLine(); 
     return value; 
    } 
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it 
    public double getDoubleValueFromUser(String message) 
    { 
     double value = 0; 
     Scanner input = new Scanner(System.in); 
     System.out.print(message + " : "); 
     value = input.nextDouble(); 
     return value; 
    } 
//DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it 
    public int getIntValueFromUser(String message) 
    { 
     int value = 0; 
     Scanner input = new Scanner(System.in); 
     System.out.print(message + " : "); 
     value = input.nextInt(); 
     return value; 
    } 

    //DO NOT PUT OTHER METHODS IN THIS CLASS or make any changes to it 
} 

Answer 1

public class AllDigits { 

private int[] digits; 

public AllDigits() 
{ 
    digits = new int[6]; 
} 

public int getDigit(int index) 
{ 
    return digits[index]; 
} 

public void setDigit(int index, int value) 
{ 
    if(index >= 0 && index <=3) 
    { 
     digits[index] = value; 
     //if we are setting the 3rd number set the 6th as well 
     if(index == 2) 
      digits[5] = value; 
    } 
    //this is for the fifth digit 
    else if(index == 4) 
    { 
     digits[index] = (digits[0] + digits[1] + digits[3]) % 10; 
    } 
} 

public void printDigit() 
{ 
    for(int i = 0; i < digits.length; i++) 
    { 
     System.out.print(digits[i]); 
     if(i != digits.length - 1) 
      System.out.print(" "); 
    } 
    System.out.println(); 
} 
} 

提供這應該是足夠多的讓你開始了。有無數的方法來做到這一點，但這是我的實現。