Repeating methods?

Question

Hi there, i have an issue which i cant solve. when ever i call a method from another class in my program, it repeatst he method twice. any thoughts?
Here is my code:
import java.util.*;
public class Driver {
     public static void main(String args[])
          Bank bank = new Bank();
          while (true)
               try
               System.out.println("");
               System.out.println("-----COMMAND LIST------");
               System.out.println("");
               System.out.println("");
               System.out.println("1 - Open a new account");
               System.out.println("2 - Close an account");
               System.out.println("3 - Credit an account");
               System.out.println("4 - Debit an account");
               System.out.println("5 - Balance request");
               System.out.println("6 - Account info");
               System.out.println("7 - EXIT");
               System.out.println("");
               Scanner input = new Scanner(System.in);
               int command;
               System.out.println("");
               System.out.print("Please enter a command: ");
               command = Integer.parseInt(input.nextLine());
               if (command == 1) {
               System.out.print("Please enter the clients name ");
               String name = input.nextLine();
               Account account = new Account (name);
               bank.openAccount(account);
               System.out.println("account opened for: " + bank.openAccount(account));
               if (command == 2) {
                              System.out.print("Please enter the clients name ");
                              String name = input.nextLine();
               if (command == 3) {
                              System.out.print("Please enter the number of the account ");
                              int acNumber = Integer.parseInt(input.nextLine());
                              bank.creditAccount(acNumber);
               if (command == 4) {
                                             System.out.print("Please enter the clients name ");
                                             String name = input.nextLine();
               if (command == 5) {
                                             System.out.print("Please enter the clients name ");
                                             String name = input.nextLine();
               if (command == 6) {
                                             System.out.print("Please enter the number of the account ");
                                             int acNumber = Integer.parseInt(input.nextLine());
                                             bank.acDetails(acNumber);
               if (command == 99) {
                    System.exit(0);
               }catch(Exception ex)
               {//handle exception
                    System.out.println("");
                    System.out.println("");
                    System.out.println("");
                    System.out.println("---NOT A VALID INPUT---"); //print message to console
                    System.out.println("---A NUMBER MUST BE ENTERED---");
                    System.out.println(ex);
                    System.out.println("");
AND THE OTHER CLASS IS:
import java.util.*;
public class Bank
     ArrayList<Account> accountList = new ArrayList();
     //constructor
     public void Bank()
     public Account openAccount (Account a)
          a.setAcNumber();
          accountList.add(a);
          System.out.println( accountList);
          //System.out.println("Account number: " + a.getAcNumber());
          return a;
     public void closeAccount (String s)
     public void creditAccount (int i)
          int position = 0;
                    while (position <= accountList.size()-1)
                         Account tempAccount = accountList.get(position);
                         int temp = tempAccount.getAcNumber();
               if (temp == i){
                    Scanner input = new Scanner(System.in);
                    System.out.print("How much would you like to credit the account? ");
                    int credit = Integer.parseInt(input.nextLine());
                    int currentBalance = tempAccount.getBalance();
                    int newBalance = currentBalance + credit;
                    tempAccount.setBalance(newBalance);
                    position++;
     public void debit (int i)
     public int checkBalance ()
     return 1;
     public void acDetails (int i)
          int position = 0;
          while (position <= accountList.size()-1)
               Account tempAccount = accountList.get(position);
               int temp = tempAccount.getAcNumber();
               if (temp == i)
                    System.out.println("");
                    System.out.println(" Account number: " + tempAccount.getAcNumber());
                    System.out.println(" Held by: " + tempAccount.getAcName());
                    System.out.println(" Balance: " + tempAccount.getBalance());
                    System.out.println("");
               position++;
}

Answer 1

Please use code tags.
import java.util.*;
public class Driver {
     public static void main(String args[])
          Bank bank = new Bank();
          while (true)
               try
               System.out.println("");
               System.out.println("-----COMMAND LIST------");
               System.out.println("");
               System.out.println("");
               System.out.println("1 - Open a new account");
               System.out.println("2 - Close an account");
               System.out.println("3 - Credit an account");
               System.out.println("4 - Debit an account");
               System.out.println("5 - Balance request");
               System.out.println("6 - Account info");
               System.out.println("7 - EXIT");
               System.out.println("");
               Scanner input = new Scanner(System.in);
               int command;
               System.out.println("");
               System.out.print("Please enter a command: ");
               command = Integer.parseInt(input.nextLine());
               if (command == 1) {
               System.out.print("Please enter the clients name ");
               String name = input.nextLine();
               Account account = new Account (name);
               bank.openAccount(account);
               System.out.println("account opened for:  " +  bank.openAccount(account));
               if (command == 2) {
                              System.out.print("Please enter the clients name ");
                              String name = input.nextLine();
               if (command == 3) {
                              System.out.print("Please enter the number of the account ");
                              int acNumber = Integer.parseInt(input.nextLine());
                              bank.creditAccount(acNumber);
               if (command == 4) {
                                             System.out.print("Please enter the clients name ");
                                             String name = input.nextLine();
               if (command == 5) {
                                             System.out.print("Please enter the clients name ");
                                             String name = input.nextLine();
               if (command == 6) {
                                             System.out.print("Please enter the number of the account ");
                                             int acNumber = Integer.parseInt(input.nextLine());
                                             bank.acDetails(acNumber);
               if (command == 99) {
                    System.exit(0);
               }catch(Exception ex)
               {//handle exception
                    System.out.println("");
                    System.out.println("");
                    System.out.println("");
                    System.out.println("---NOT A VALID INPUT---"); //print message to console
                    System.out.println("---A NUMBER MUST BE ENTERED---");
                    System.out.println(ex);
                    System.out.println("");
*AND THE OTHER CLASS IS:*
import java.util.*;
public class Bank
     ArrayList<Account> accountList = new ArrayList();
     //constructor
     public void Bank()
     public Account openAccount (Account a)
          a.setAcNumber();
          accountList.add(a);
          System.out.println( accountList);
          //System.out.println("Account number: " + a.getAcNumber());
          return a;
     public void closeAccount (String s)
     public void creditAccount (int i)
          int position = 0;
                    while (position <= accountList.size()-1)
                         Account tempAccount = accountList.get(position);
                         int temp = tempAccount.getAcNumber();
               if (temp == i){
                    Scanner input = new Scanner(System.in);
                    System.out.print("How much would you like to credit the account? ");
                    int credit = Integer.parseInt(input.nextLine());
                    int currentBalance = tempAccount.getBalance();
                    int newBalance = currentBalance + credit;
                    tempAccount.setBalance(newBalance);
                    position++;
     public void debit (int i)
     public int checkBalance ()
     return 1;
     public void acDetails (int i)
          int position = 0;
          while (position <= accountList.size()-1)
               Account tempAccount = accountList.get(position);
               int temp = tempAccount.getAcNumber();
               if (temp == i)
                    System.out.println("");
                    System.out.println(" Account number:  " + tempAccount.getAcNumber());
                    System.out.println(" Held by:         " + tempAccount.getAcName());
                    System.out.println(" Balance:         " + tempAccount.getBalance());
                    System.out.println("");
               position++;
  }You have missed the Account class, and the code has not been shrunk to include just what is needed to show the problem and is too long for me to bother reading. Either include the Account class so I can run it and/or remove everything that is not needed to show the problem you are experiencing.