Student Payment System with Validation Counter
Explanation & Learnings
For this activity, we were tasked to create a Student Payment System that further challenges our understanding of Java control structures. Compared to the previous ATM program, this one had more moving parts — tracking a student's information, their remaining tuition balance, discount eligibility, and a transaction counter all at the same time. The structure was still built around a do-while loop with a switch statement, but the logic inside each case was noticeably more complex.
One of the trickier parts was implementing the discount feature. I had to make sure that it could only be applied once, only to scholars, and only when there was still a remaining balance. Managing all three conditions without them conflicting with each other took some careful thinking. I handled it using a "discountCounter" variable that flags whether the discount has already been availed, which felt like a simple but effective solution.
I also found it meaningful that the exit case wasn't just a goodbye message — it doubled as a transaction summary, displaying the student's name, ID, total number of transactions, and final balance. That detail made the program feel closer to something you'd actually encounter in a real school system.
package midtermact4;
import java.util.Scanner;
public class StudentPaymentSystemDeOro {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("===== STUDENT INFORMATION =====");
System.out.print("Enter Student Name: ");
String studNa = sc.nextLine();
System.out.print("Enter Student ID: ");
String studID = sc.nextLine();
System.out.print("Enter Total Tuition Fee: PHP ");
double tuition = sc.nextDouble();
int choice;
double balance = tuition;
int discountCounter = 0;
int transactionCounter = 0;
do {
System.out.println("\n===== PAYMENT MENU =====");
System.out.println("1. Pay Tuition");
System.out.println("2. Check Balance");
System.out.println("3. Apply Discount");
System.out.println("4. Exit");
System.out.print("Enter your choice: ");
choice = sc.nextInt();
switch (choice) {
case 1:
System.out.println("\n===== PAY TUITION =====");
if (balance <= 0) {
System.out.println("No remaining balance.");
} else {
System.out.print("Enter payment amount: PHP ");
double payment = sc.nextDouble();
if (payment <= 0) {
System.out.println("Error! Payment amount must be greater than zero.");
} else if (payment > balance) {
System.out.println("Invalid Payment");
} else {
balance -= payment;
transactionCounter++;
System.out.printf("Payment successful. Remaining Balance: PHP %.2f%n", balance);
if (balance <= 0) {
System.out.println("No remaining balance.");
}
}
}
break;
case 2:
System.out.println("\n===== CHECK BALANCE =====");
transactionCounter++;
if (balance <= 0) {
System.out.println("No remaining balance.");
} else {
System.out.printf("Remaining Balance: PHP %.2f%n", balance);
}
break;
case 3:
System.out.println("\n===== APPLY DISCOUNT =====");
if (balance <= 0) {
System.out.println("No remaining balance.");
} else if (discountCounter == 1) {
System.out.println("Discount already availed. It can only be applied once.");
} else {
System.out.println("Select Student Type:");
System.out.println("1. Regular Student");
System.out.println("2. Scholar");
System.out.print("Enter choice: ");
int studType = sc.nextInt();
if (studType == 2) {
double discount = balance * 0.20;
balance -= discount;
discountCounter++;
transactionCounter++;
System.out.printf("Discount applied: PHP %.2f%n", discount);
System.out.printf("New Balance: PHP %.2f%n", balance);
} else if (studType == 1) {
System.out.println("Regular students are not eligible for discount.");
transactionCounter++;
} else {
System.out.println("Error! Please enter a valid choice.");
}
}
break;
case 4:
System.out.println("\n===== TRANSACTION SUMMARY =====");
System.out.println("Student Name: " + studNa);
System.out.println("Student ID: " + studID);
System.out.println("Total Transactions: " + transactionCounter);
System.out.printf("Final Balance: PHP %.2f%n", balance);
System.out.println("Transaction ended. Thank you for using our student service.");
break;
default:
System.out.println("Error! Please try again from the menu.");
}
} while (choice != 4);
}
}===== STUDENT INFORMATION =====
Enter Student Name: China
Enter Student ID: 2024-02641
Enter Total Tuition Fee: PHP 10000
===== PAYMENT MENU =====
1. Pay Tuition
2. Check Balance
3. Apply Discount
4. Exit
Enter your choice: 2
===== CHECK BALANCE =====
Remaining Balance: PHP 10000.00