COMPILES OK! BUT WHY DOESN'T IT RUN?

Question

Hello,
I would really really appreciate some assistance on this piece of code. The following program is a simple Bank Account program which allows a user to view either their Savings or Current account details and displays the details. This piece of code compiles fine, but when I try and run it I get an error message:
Exception in thread "main" java.lang.nosuchmethoderror: main
I am not sure what this means, but I have a feeling its got something to do with the print_menu method? I am really new to Java and would appreciate some advice?
I am really sorry if the code is quite messy, i tried using the formatting tags but it doesn't work, or I am not sure if I am doing it correctly.
import javax.swing.*;
class BankAccount
     String name;
     String AcNo;
     double deposit;
     BankAccount() {}
     BankAccount(String aName, String aAcNo, double aDep)
          name = aName;
          AcNo = aAcNo;
          deposit = aDep;
     public void setName(String aName)
          name=aName;
     public void setAcNo(String aAcNo)
          AcNo = aAcNo;
     public void setDeposit(double aDep)
          deposit = aDep;
     public String getName()
          return name;
     public String getAcNo()
          return AcNo;
     public double getDeposit()
          return deposit;
     public double withDrawCash(double cash)
          if (cash <=deposit)
               deposit = deposit-cash;
               return(cash);
          else
          System.out.println("Not enough money in your account!");
          return (0);
public double DepositCash(double amount)
          if (amount >0.00)
               deposit = deposit+amount;
               return(amount);
          else
               System.out.println("Must be Positive number");
               return (0);
     public class cw13
          String t_option;
          int option;
          BankAccount myCurrentAc = new BankAccount("Rita", "553398", 2000);
          BankAccount mySavingsAc = new BankAccount ("Rita", "665522", 4000);
          BankAccount_with_statement Rita = new BankAccount_with_statement("Rita, 665522, 4000");
          public void main (String args [])
               String t_choice=JOptionPane.showInputDialog(null, "***Welcome to Personal Banking***\n\n" + "Please select account:\n" + "1. Current Account \n" + " 2. Savings Account" );
               int choice=Integer.parseInt(t_choice);
               print_menu(option);
public void print_menu(int option)
if (option==1)
               t_option=JOptionPane.showInputDialog(null,"Please enter your Account Number for your Current Account:");
               option=Integer.parseInt(t_option);
if (option==553398)
          t_option=JOptionPane.showInputDialog(null, "Below are your details for your current account \n" + "\n Balance:"+ myCurrentAc.getDeposit() + "\n Name: "+ myCurrentAc.getName() +"\n AcNo:" + myCurrentAc.getAcNo() + "\n What would you like to do:\n" + "3. View Statement \n" + "4. Withdraw Money\n" + "5. Deposit Money");
          option=Integer.parseInt(t_option);
     else if(option!=553398)
          t_option=JOptionPane.showInputDialog(null, "Invalid Account Number, Please try again");
          option=Integer.parseInt(t_option);
if(option ==2)
               t_option=JOptionPane.showInputDialog(null, "Below are your details for your Savings Account \n" + "\n Balance:" + mySavingsAc.getDeposit() + "\n Name: "+ mySavingsAc.getName() + "AcNo:" + mySavingsAc.getAcNo() + "\n What What would you like to do:\n" + "3. View Statement \n" + "4. Withdraw Money �20\n" + "5. Deposit Money �50");
               option=Integer.parseInt(t_option);
if(option==4)
          String c_cash=JOptionPane.showInputDialog(null, "How much would you like to Withdraw from your Current Account? \n");
          int cash = Integer.parseInt(c_cash);
          myCurrentAc.withDrawCash(cash);
          JOptionPane.showMessageDialog(null, "Your new balance is : " + myCurrentAc.getDeposit());
if(option==5)
          String c_cash=JOptionPane.showInputDialog(null, "How much would you like to Deposit into your Current Account? \n");
          int cash= Integer.parseInt(c_cash);
          myCurrentAc.DepositCash(cash);
          JOptionPane.showMessageDialog(null, "Your new balance is : " + myCurrentAc.getDeposit());
if (option==6)
          myCurrentAc.DepositCash(50);
          JOptionPane.showMessageDialog(null, "Your new balance is: " + myCurrentAc.getDeposit());

Answer 1

I did...I understand that I need to..but still get
errors!It works for me..
Havent really read the code, too messy.
But you need to implement BankAccount_with_statement before you can use it, so i just comented it away,added static, and it runs fine.
You have to make everyting that runs in main static first..., or move'em into main.
import javax.swing.*;
public class cw13 {
    static String t_option;
    static int option;
static BankAccount myCurrentAc = new BankAccount("Rita", "553398", 2000);
static BankAccount mySavingsAc = new BankAccount ("Rita", "665522", 4000);
//BankAccount_with_statement Rita = new BankAccount_with_statement("Rita, 665522, 4000");
public static void main (String args [])
String t_choice=JOptionPane.showInputDialog(null, "***Welcome to Personal Banking***\n\n" + "Please select account:\n" + "1. Current Account \n" + " 2. Savings Account" );
int choice=Integer.parseInt(t_choice);
print_menu(option);
public static void print_menu(int option)
if (option==1)
t_option=JOptionPane.showInputDialog(null,"Please enter your Account Number for your Current Account:");
option=Integer.parseInt(t_option);
if (option==553398)
t_option=JOptionPane.showInputDialog(null, "Below are your details for your current account \n" + "\n Balance:"+ myCurrentAc.getDeposit() + "\n Name: "+ myCurrentAc.getName() +"\n AcNo:" + myCurrentAc.getAcNo() + "\n What would you like to do:\n" + "3. View Statement \n" + "4. Withdraw Money\n" + "5. Deposit Money");
option=Integer.parseInt(t_option);
else if(option!=553398)
t_option=JOptionPane.showInputDialog(null, "Invalid Account Number, Please try again");
option=Integer.parseInt(t_option);
if(option ==2)
t_option=JOptionPane.showInputDialog(null, "Below are your details for your Savings Account \n" + "\n Balance:" + mySavingsAc.getDeposit() + "\n Name: "+ mySavingsAc.getName() + "AcNo:" + mySavingsAc.getAcNo() + "\n What What would you like to do:\n" + "3. View Statement \n" + "4. Withdraw Money �20\n" + "5. Deposit Money �50");
option=Integer.parseInt(t_option);
if(option==4)
String c_cash=JOptionPane.showInputDialog(null, "How much would you like to Withdraw from your Current Account? \n");
int cash = Integer.parseInt(c_cash);
myCurrentAc.withDrawCash(cash);
JOptionPane.showMessageDialog(null, "Your new balance is : " + myCurrentAc.getDeposit());
if(option==5)
String c_cash=JOptionPane.showInputDialog(null, "How much would you like to Deposit into your Current Account? \n");
int cash= Integer.parseInt(c_cash);
myCurrentAc.DepositCash(cash);
JOptionPane.showMessageDialog(null, "Your new balance is : " + myCurrentAc.getDeposit());
if (option==6)
myCurrentAc.DepositCash(50);
JOptionPane.showMessageDialog(null, "Your new balance is: " + myCurrentAc.getDeposit());
}