View difference between Paste ID: h9ekjXj6 and

-
+package creditcard;
 import java.io.FileWriter;
 import java.io.BufferedWriter;
 import java.io.IOException;
 
 public class Card {
 
     //Declarations
     private String cardNumber;
     private boolean test = false;
     private String cardType = "Unknown";
 
     public Card(){
         cardNumber = "0";
     }//end Default Constructor
 
     public Card(String input){
         cardNumber = input;
     }//end Constructor
 
     //
     public void typeMatcher(){
         if (cardNumber.startsWith("37"))
             cardType = "American Express";
         if (cardNumber.startsWith("4"))
             cardType = "Visa";
         if (cardNumber.startsWith("5"))
             cardType = "Mastercard";
         if (cardNumber.startsWith("6"))
             cardType = "Discover";
     }//end typeMatcher
 
     // Returns true if card number is Valid.
     public boolean isValid(String cardNumber){
         if (cardNumber.length() > 12 && cardNumber.length() < 17)
             if((sumOfDoubleEvenPlace(cardNumber)+sumOfOddPlace(cardNumber))/10==0)
                 test = true;
         return test;
     }//end isValid
 
     // Get result from Step 2.
     public int sumOfDoubleEvenPlace(String cardNumber){
         int sum = 0;
         int num = 0;
         for (int i = cardNumber.length()-2; i>-1; i-=2){
             num = Integer.parseInt(cardNumber.substring(i,i+1));
             if (num<10)
                 sum+=(num*2);
             else
                 sum+=getDigit(num);
         }//end for
         System.out.println(sum);
         return sum;
     }//end SumOfDoubleEvenPlace
 
     // Return this number if it is a single digit
     // Otherwise return the sum of the two digits.
     public int getDigit (int num){
         int no1 = num/10;
         int no2 = num%10;
         return no1+no2;
     }//end getDigit
 
     // Returns sum of odd place digits in number.
     public int sumOfOddPlace(String cardNumber){
         int sum = 0;
         for (int i = cardNumber.length()-1; i>-1; i-=2)
             sum += Integer.parseInt(cardNumber.substring(i,i));
         System.out.println(sum);
         return sum;
     }//end sumOfOddPlace
 
     public void writeToFile(){
         try{
             FileWriter fw = new FileWriter("G:\\Output.txt",true);
             BufferedWriter bw = new BufferedWriter(fw);
             if (isValid(cardNumber)){
                 bw.write(cardNumber+" is a valid "+cardType+" card.");
                 bw.newLine();
             }//end if
             else{
                 bw.write(cardNumber+" is an invalid "+cardType+" card.");
                 bw.newLine();
             }//end else
             bw.close();
             System.out.println("Success");
         }//end try
 
         catch(IOException ioe){
             ioe.printStackTrace();
         }//end catch
 
     }//end outputToFile
 
 }//end Card