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Transaction.java
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Transaction.java
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import java.io.*;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Scanner;
public class Transaction {
void transactionFun(int accNo) throws IOException {
Scanner scanner = new Scanner(System.in);
System.out.println("Receiver's Account Number: ");
int rAccNo = scanner.nextInt();
scanner.nextLine();
System.out.println("Amount: ");
int tAmount = scanner.nextInt();
scanner.nextLine();
System.out.println("Remarks: ");
String tRemarks = scanner.nextLine();
System.out.println("\n");
allTransaction(accNo, rAccNo, tAmount, tRemarks);
}
void allTransaction(int accNo, int rAccNo, int tAmount, String tRemarks) throws IOException {
if (rAccCheck(rAccNo)) {
// rAcc Validated
if (sAccBalCheck(accNo, tAmount)) {
// sBalance ok
transaction(accNo, rAccNo, tAmount); // actual transaction
writeTransaction(accNo, rAccNo, tAmount, tRemarks); // write transaction to file
System.out.println("Transaction Successful!");
System.out.println("Press any key to continue...");
Scanner tscanner = new Scanner(System.in);
tscanner.nextLine();
Main.menu(accNo);
} else {
System.out.println("Insufficient Balance!");
}
} else {
System.out.println("Incorrect Account Number!");
}
}
boolean rAccCheck(int rAccNo) throws FileNotFoundException {
File file = new File("db/balanceDB.txt");
Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
String[] subLine = line.split(" ");
int a = Integer.parseInt(subLine[0]);
if (rAccNo == a)
return true;
}
return false;
}
boolean sAccBalCheck(int accNo, int tAmount) throws FileNotFoundException {
File file = new File("db/balanceDB.txt");
Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
String[] subLine = line.split(" ");
int a = Integer.parseInt(subLine[0]);
int b = Integer.parseInt(subLine[1]);
if (accNo == a) {
if (tAmount <= b)
return true;
}
}
return false;
}
void transaction(int accNo, int rAccNo, int tAmount) throws IOException {
File file = new File("db/balanceDB.txt");
Scanner scanner = new Scanner(file);
String newInfo = "";
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
String[] subLine = line.split(" ");
int a = Integer.parseInt(subLine[0]);
int b = Integer.parseInt(subLine[1]);
if (accNo == a) {
b = b - tAmount;
} else if (rAccNo == a) {
b = b + tAmount;
}
String newLine = a + " " + b;
newInfo += newLine + "\n";
}
Writer writer = new FileWriter("db/balanceDB.txt");
writer.write(newInfo);
writer.close();
}
void writeTransaction(int accNo, int rAccNo, int tAmount, String tRemarks) throws IOException {
debitWrite(accNo, rAccNo, tAmount, tRemarks);
creditWrite(accNo, rAccNo, tAmount, tRemarks);
}
void debitWrite(int accNo, int rAccNo, int tAmount, String tRemarks) throws IOException {
String description = ("Transferred to " + rAccNo);
String type = "Debited";
String date = java.time.LocalDate.now().toString();
LocalDateTime now = LocalDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
String time = formatter.format(now);
Writer writer = new FileWriter("db/Bank Statement/acc_" + accNo + ".txt", true);
writer.write(description + " " + type + " " + tAmount + " " + tRemarks + " " + date + " " + time + "\n");
writer.close();
}
void creditWrite(int accNo, int rAccNo, int tAmount, String tRemarks) throws IOException {
String description = ("Transferred from " + accNo);
String type = "Credited";
String date = java.time.LocalDate.now().toString();
LocalDateTime now = LocalDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
String time = formatter.format(now);
Writer writer = new FileWriter("db/Bank Statement/acc_" + rAccNo + ".txt", true);
writer.write(description + " " + type + " " + tAmount + " " + tRemarks + " " + date + " " + time + "\n");
writer.close();
}
}