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Thread: unknown problems

  1. #1
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    Default unknown problems

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    package bank;
    import java.io.*;
    import java.util.*;


    public class accountList {

    private List accountlists = new LinkedList();

    public void addAccount(bankAccount a1)
    {
    accountlists.add(a1);
    }

    public int searchAccountNumber()
    {
    int max = 1000;

    if(accountlists == null)
    return max;

    for(Iterator iterator = accountlists.iterator(); iterator.hasNext()
    {
    bankAccount a1 = (bankAccount) iterator.next();
    if(a1.getAccNumber() > max)
    max = a1.getAccNumber();
    }
    return max;

    }

    public boolean searchAccountNumber(int acc)
    {

    for(Iterator iterator = accountlists.iterator(); iterator.hasNext()
    {
    bankAccount a1 = (bankAccount) iterator.next();
    if(a1.getAccNumber() == acc)
    return true;
    }
    return false;
    }

    public bankAccount searchAccount(int acc)
    {
    for(Iterator iterator = accountlists.iterator(); iterator.hasNext()
    {
    bankAccount a1 = (bankAccount) iterator.next();
    while(a1.getAccNumber() == acc)
    return a1;
    }
    return null;
    }

    public void display()
    {
    for(Iterator iterator = accountlists.iterator(); iterator.hasNext()
    {
    bankAccount a1 = (bankAccount) iterator.next();
    if(a1.equals(null))
    System.out.println("No any accounts.");
    else
    System.out.println(a1);
    }
    }
    }

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    package bank;

    public class bankAccount {
    private String name;
    private int accountnumber;
    private double balance;
    private transactionsList accountTrans = new transactionsList();

    public bankAccount(String n, int account, double balance)
    {
    name = n;
    this.balance = balance;
    accountnumber = account;
    }

    public String toString()
    {
    String str = accountnumber + " " + name + " " + balance;
    return str;
    }

    public double getBalance()
    {
    return balance;
    }

    public String getName()
    {
    return name;
    }

    public int getAccNumber()
    {
    return accountnumber;
    }

    public void deposit(double a)
    {
    balance += a;
    }

    public void withdrawl(double a)
    {
    balance -= a;

    }

    public void addTrans(transactions t)
    {
    accountTrans.addtransactions(t);
    }

    public void display()
    {
    accountTrans.displayAll();
    }

    }

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    package bank;
    import java.io.*;
    import java.util.*;


    public class Main {
    private static Scanner keyboard = new Scanner(System.in);
    private static accountList alist = new accountList();

    public static void main(String[] args) {
    int choice;
    {
    menu();
    choice = keyboard.nextInt();
    switch(choice)
    {
    case 1: addAccount();
    break;
    case 2: displayAccounts();
    break;
    case 3: login();
    break;
    case 4: System.exit(0);
    }
    }while(choice != 4);

    System.out.println("Thanks for using");
    }

    public static void menu()
    {
    System.out.println("1. Add account.");
    System.out.println("2. Display all accounts.");
    System.out.println("3. Login Accounts.");
    System.out.println("4. Exit System.");
    System.out.print("Pleae enter your choice(1- 4): ");
    }

    public static void submenu()
    {
    System.out.println("1. Deposit.");
    System.out.println("2. Withdrawl.");
    System.out.println("3. Show All transactions.");
    System.out.println("4. LogoutAccount.");
    System.out.print("Pleae enter your choice(1- 4): ");
    }

    public static void addAccount()
    {
    String name;
    Scanner keyboard3 = new Scanner(System.in);
    System.out.print("Please enter your first name: ");
    name = keyboard3.nextLine();

    bankAccount account = new bankAccount(name, alist.searchAccountNumber()+1, 0);
    alist.addAccount(account);
    }

    public static void displayAccounts()
    {
    alist.display();
    }

    public static void login()
    {
    int acc, choice;
    boolean check;
    do
    {
    System.out.print("Please enter you account number: ");
    acc = keyboard.nextInt();

    check = alist.searchAccountNumber(acc);
    if(check != true)
    System.out.println("Unable to locate account.");
    }while(check != true);

    bankAccount account = alist.searchAccount(acc);

    if(account != null)
    {
    do
    {
    System.out.println("Current Balance = " + account.getBalance());
    submenu();
    choice = keyboard.nextInt();
    switch(choice)
    {
    case 1: deposit(account);
    break;
    case 2: withdrawl(account);
    break;
    case 3: showAllTrans(account);
    break;
    case 4: return;
    }
    }while(choice != 4);
    }

    }

    public static void deposit(bankAccount acc)
    {
    double amount;
    System.out.print("Enter the amount: ");
    amount = keyboard.nextDouble();
    acc.deposit(amount);
    transactions t1 = new transactions(acc.getBalance(), amount, "+");
    acc.addTrans(t1);
    }

    public static void withdrawl(bankAccount acc)
    {
    double amount;
    do
    {
    System.out.print("Enter the amount: ");
    amount = keyboard.nextDouble();
    if(acc.getBalance() <= amount)
    System.out.println("Low balance.");
    }while(acc.getBalance() <= amount);

    acc.withdrawl(amount);
    transactions t1 = new transactions(acc.getBalance(), amount, "-");
    acc.addTrans(t1);
    }

    public static void showAllTrans(bankAccount acc)
    {
    acc.display();
    }

    }

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    package bank;
    import java.util.*;


    public class transactions {
    private double balance;
    private double withdrawlordeposit;
    private String plusminus;
    //private String date;

    public transactions(double bal, double wd, String pm)
    {
    balance = bal;
    withdrawlordeposit = wd;
    plusminus = pm;

    }

    public String toString()
    {
    String str = plusminus + withdrawlordeposit + " " + balance;
    return str;
    }
    }

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    package bank;
    import java.util.*;


    public class transactions {
    private double balance;
    private double withdrawlordeposit;
    private String plusminus;
    //private String date;

    public transactions(double bal, double wd, String pm)
    {
    balance = bal;
    withdrawlordeposit = wd;
    plusminus = pm;

    }

    public String toString()
    {
    String str = plusminus + withdrawlordeposit + " " + balance;
    return str;
    }
    }
    //can anybody figure out whats wrong here. Its not a syntax error at all. The program runs but when i tried to add new account and enter the first name which the program will ask for. It just gets stuck at there.
    Don't know whats wrong. Can anyone help. Thanks


  2. #2
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    Default Re: unknown problems

    I've moved this thread. Please read this: This Forum is for Saying Hi, not for Asking Technical Questions (READ BEFORE POSTING)

    Please also use highlight tags when posting code.

    You're going to have to step through this with a debugger, or at the very least add some print statements, to figure out what your code is actually doing. Recommended reading: http://www.javaprogrammingforums.com...t-println.html
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
    Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!

  3. #3
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    Default Re: unknown problems

    Wrap your code in the code tags [ code=java] [/code]

    It makes reading it much easier for us to help you.

  4. #4
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    Default Re: unknown problems

    public bankAccount searchAccount(int acc)
    {
    for(Iterator iterator = accountlists.iterator(); iterator.hasNext()
    {
    bankAccount a1 = (bankAccount) iterator.next();
    while(a1.getAccNumber() == acc)
    return a1;
    }
    return null;
    }

    You know that once it returns a1, it exits the method.

    int choice;
    {
    menu();
    choice = keyboard.nextInt();
    switch(choice)
    {
    case 1: addAccount();
    break;
    case 2: displayAccounts();
    break;
    case 3: login();
    break;
    case 4: System.exit(0);
    }
    }while(choice != 4);


    Was that supposed to be a do...while() loop because right now I can't find the do and the while loop will execute the ; while choice != 4 ?
    Last edited by javapenguin; June 4th, 2012 at 12:13 PM.

  5. The Following User Says Thank You to javapenguin For This Useful Post:

    kindk12 (June 5th, 2012)

  6. #5
    Junior Member
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    Default Re: unknown problems

    Hey javapenguin
    Thanks for your help. I really did not notice that I have do missing. Since my IDE didn't show any error so I thought it was something with run time.
    Any way the program works good now. Appreciate your help.

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