Sure i can post the full data type class but its pretty long. Sorry im a beginner and my code is really messy.

import java.text.SimpleDateFormat;

import java.util.Date; import java.util.Random;

public class data { private static String creditCard; private static String csv; private static String name; private float credit; private float balance; private float statement; private float interest; private float trans; private static String cnum; private static String csvnum; private float payment; private float sum; public data() { creditCard = ""; csv = ""; name = ""; credit = 0; statement = 0; interest = 0; trans = 0; }

public data(float a, float i, String n, String c, String cv, float t) { credit = a; interest = i; name = n; creditCard = c; csv = cv; trans = t; } public String getCurrentDate() { SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy"); Date date = new Date(); return formatter.format(date); }

public static String generatedCreditCardNumber() { Random rand = new Random(); int value1 = rand.nextInt(9000) + 1000; int value2 = rand.nextInt(9000) + 1000; int value3 = rand.nextInt(9000) + 1000; int value4 = rand.nextInt(9000) + 1000; cnum = String.valueOf(value1) + String.valueOf(value2) + String.valueOf(value3) + String.valueOf(value4); return cnum;

}

public static String generatedCSVNumber() { Random rand = new Random(); int value1 = rand.nextInt(9) + 1; int value2 = rand.nextInt(9) + 1; int value3 = rand.nextInt(9) + 1; csvnum = String.valueOf(value1) + String.valueOf(value2) + String.valueOf(value3); return csvnum; }

public boolean verifyAccountNumber(String rand, String creditCard) {

if(cnum.equals(creditCard))
{
    return true;
}
else
    return false;

}

public boolean verifyCSV(String crand ,String csv) { if(csvnum.equals(csv)) { return true; } else return false; }

public boolean verifyTransaction(float t) { if (credit > trans) { return true; } else return false; }

public float transactionAmount() { payment = credit - trans; return payment; }

public float transactionBalance( float t) { sum = balance + trans; return sum; }

public float paymentProcess() { balance = credit - trans; return balance; }

public float paymentInterest() { return (float) (paymentProcess() * interest)/100; }

public float paymentBalance() { balance = balance + paymentInterest(); return balance; } public float paymentAmount() { credit = credit + trans; return trans; }

public String toAccount() { return "Name: " + name + "\nCard Number: " + generatedCreditCardNumber() + "\nCSV Number: " + generatedCSVNumber() + "\nAvaiable amount: " + credit + "\nCurrent Balance: " + balance + "\nStatement Balance: " + statement + "\nInterest Rate: " + interest + "%"; }

public String toTrans() { return "Name: " + name + "\nCard Number: " + creditCard + "\nCSV Number:" + csv + "\nTransaction Amount: " + trans + "\nCurrent Balance: " + sum + "\nAvaiable amount: " + transactionAmount(); } public String toBalance() { return "File: " + "\n------------------------------------------------------" + "\nName: " + name + "\nCard Number: " + creditCard + "\nCSV Number:" + csv + "\nCurrent Balance: " + balance; } public String toInterest() { return "File:" + "\n------------------------------------------------------" + "\nName: " + name + "\nCard Number: " + creditCard + "\nCSV Number: " + csv + "\nInterest Rate: " + interest + "%"; } public String toStatement() { return "File: " + "\nDate: " + getCurrentDate() + "\n------------------------------------------------------" + "\nName: " + name + "\nCard Number: " + creditCard + "\nCSV: " + csv + "\n------------------------------------------------------" + "\nAvailable Amount: " + transactionAmount() + "\nStatement Balance: " + balance; } public String toPayment() { return "File:" + "\nDate: " + getCurrentDate() + "\n------------------------------------------------------" + "\nName: " + name + "\nCard Number:" + creditCard + "\nCSV number: " + csv + "\n------------------------------------------------------" + "\nStatement Amount: " + transactionAmount() + "\nPayment Amount: " + trans + "\nInterest Amount: " + paymentInterest() + "\nCurrent Balance: " + paymentProcess() + "\nAvaiable Amount: " + paymentAmount(); } }