Create a program similar to this while the output stays the same.

Question

Using a text editor, create a file that contains a list of at least 10 six-digit account numbers. Read in each account number and display whether it is valid. An account number is valid only if the last digit is equal to the sum of the first five digits divided by 10. For example, the number 223355 is valid because the sum of the first five digits is 15, the remainder when 15 is divided by 10 is 5, and the last digit is 5. Write only valid account numbers to an output file, each on its own line. Save the application as ValidateCheckDigits.java

import java.nio.file.*;

import java.io.*;

public class ValidateCheckDigits {

public static void main(String[] args) throws IOException {

Path fileIn;

fileIn = Paths.get ("C:\\Users\\Giga\\Desktop\\AcctNums.txt");

Path fileOut = Paths.get ("AcctNumsOut.txt");

String acct;

int acctNum;

int lastDigits;

int digit;

int sum;

int x;

String newLine = "\n";

InputStream input = null ;

OutputStream output = null;

try

{

input = Files.newInputStream(fileIn);

BufferedReader reader = new BufferedReader( new InputStreamReader(input));

output = Files.newOutputStream(fileOut);

acct = reader.readLine();

while(acct != null)

{

sum = 0;

acctNum = Integer.parseInt(acct);

lastDigits = acctNum % 10 ;

acctNum = acctNum /10;

for(x = 0; x < 6; x++)

{

digit = acctNum % 10;

acctNum =acctNum / 10;

sum = sum + digit;

}

sum = sum % 10 ;

if(sum == lastDigits){

System.out.println(acct + " is valid");

acct = acct + System.getProperty("line separator");

byte []data =acct.getBytes();

output.write(data);

}

else{

System.out.println(acct + "is invalid");

}

acct = reader.readLine();

}

input.close();

output.close();

}

catch (IOException e){

System.out.println(e);

}

}

Answer 1

import java.io.*;

class ValidateCheckDigits

{

public void Go()

{

try

{

FileReader fileReader = new FileReader("E:\\accountNums.dat");

BufferedReader bufferedReader = new BufferedReader(fileReader);

String inbuff=null;

FileWriter fileWriter = new FileWriter("E:\\validAcctNums.dat");

BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

while (( inbuff = bufferedReader.readLine() )!=null)

{

int N = inbuff.length();

System.out.println(inbuff);

if (N!=6) { System.out.println("Account # " + inbuff + " incorrect length ");}

int checkSum=0;

for (int iLoop=0; iLoop<5; iLoop++)

{

char chChar = inbuff.charAt(iLoop);

checkSum = checkSum + (chChar-48);

}

System.out.println( " check sum = " + checkSum);

char checkDigit = inbuff.charAt(N-1);

if ((checkDigit-48) == (checkSum % 10))

{

System.out.println(inbuff + " is valid account # ");

bufferedWriter.write(inbuff+"\n",0,N+1);

}

else

{

System.out.println(inbuff + " is invalid account # ");

}

} //while

bufferedReader.close();

bufferedWriter.close();

} //try

catch (IOException ex)

{

}

}//Go

public static void main (String args[])

{

ValidateCheckDigits x = new ValidateCheckDigits();

x.Go();

}

}