The main method does not go inside any other method or constructor.
It stands by itself as a method inside a class body, viz, the curley braces {}.
Compile errors:
C:\jexp>javac bankingrx.java
bankingrx.java:46: cannot find symbol
symbol : method validWithdrawal(double)
location: class CustomerRx
cust.validWithdrawal(withdrawal);
^
bankingrx.java:49: cannot find symbol
symbol : method showMessageDialog(java.lang.String)
location: class javax.swing.JOptionPane
JOptionPane.showMessageDialog("Your remaining balance is:" +
^
bankingrx.java:53: cannot find symbol
symbol : variable output
location: class BankingRx
JOptionPane.showMessageDialog(null,output,"not valid choice"
,
^
3 errors
Comments in code below show how these were fixed.
I changed the names of the classes so you can run this as–is.
import java.io.*;
import javax.swing.JOptionPane;
import java.text.DecimalFormat;
public class BankingRx
{
public BankingRx() {}
public static void main(String[] args)
{
//Housekeeping
int depCount = 0, withdrawalCount = 0, choices;
double startingBalance = 0, deposit = 0, withdrawal = 0;
boolean validWithdrawal = true;
DecimalFormat twoDigits = new DecimalFormat("0.00");
//Processing
CustomerRx cust = new CustomerRx(); //Instantiate customer object
// populates the starting balance field with
// accountBalance from customer class
startingBalance = cust.accountBalance;
do
{
choices = Integer.parseInt(
JOptionPane.showInputDialog("Menu :\n" +
"Enter 1 - For Deposit\n" +
"Enter 2 - For Withdrawal\n" +
"Enter3 - For Balance\n" +
"Enter 9 - To Terminate\n"));
switch(choices)
{
case 1:
deposit = Double.parseDouble(
JOptionPane.showInputDialog("Pl ease enter " +
"a deposit amount."));
cust.processDeposit(deposit);
break;
case 2:
withdrawal = Double.parseDouble(
JOptionPane.showInputDialog("Pl ease enter " +
"a withdrawal."));
// CustomerRx class does not have this method.
// cust.validWithdrawal(withdrawal);
break;
case 3:
// JOptionPane class does not have a method that takes
// these type of arguments.
// JOptionPane.showMessageDialog("Your remaining balance is:" +
// cust.accountBalance);
// Try this
JOptionPane.showMessageDialog(null,"Your remaining balance " +
"is:" + cust.accountBalance);
break;
default:
// Variable "output" has not been declared.
String output = "hello world";
JOptionPane.showMessageDialog(null,output,"not valid choice",
JOptionPane.INFORMATION_MESSAGE);
}
String output = "Customer Name : " + cust.customerName + "\n";
output += "Customer Account # : " + cust.customerAcct + "\n";
output += "Starting Balance : " + twoDigits.format(startingBalance) + "\n\n";
output += "Total Deposit : " + twoDigits.format(cust.totalDeposits) + "\n";
output += "Total Withdrawal : " +
twoDigits.format(cust.totalWithdrawals) + "\n\n";
output += "Closing Balance : " + twoDigits.format(cust.accountBalance) + "\n";
JOptionPane.showMessageDialog(null, output, "Transaction Summary",
JOptionPane.INFORMATION_MESSAGE);
// System.exit(0);
} while (choices != 9);
}
}
class CustomerRx
{
// member variables in class scope
String customerName;
int customerAcct;
double accountBalance, totalDeposits, totalWithdrawals;
//constructor
CustomerRx()
{
customerName = JOptionPane.showInputDialog("Please enter the Customer's name");
customerAcct = Integer.parseInt(
JOptionPane.showInputDialog("Plea se enter the " +
"Customer's Account Number"));
accountBalance = Double.parseDouble(
JOptionPane.showInputDialog("Pl ease enter the " +
"starting balance"));
totalDeposits= 0;
totalWithdrawals=0;
}
//methods
void processDeposit(double depositAmount)
{
accountBalance += depositAmount;
totalDeposits +=depositAmount;
}
boolean processWithdrawal(double withdrawalAmount)
{
if (withdrawalAmount <= accountBalance)
{
accountBalance -= withdrawalAmount;
totalWithdrawals += withdrawalAmount;
return true;
}
else
{
String errorMessage = "Insufficient Funds!! ";
errorMessage += "Your current balance is " + accountBalance;
JOptionPane.showMessageDialog(null, errorMessage, "Error",
JOptionPane.ERROR_MESSAGE);
return false;
}
}
}
Linear Mode
