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Thread: Help with programe please

  1. #1
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    Red face Help with programe please

    Sorry guys i need to delet this code
    Last edited by Newtojava; August 18th, 2010 at 08:30 AM.


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    Default Re: Help with programe please

    I have changed this section but i am still not sure how to return the new account i have add.
    public BankAccountOutputVO createNewCurrentAccount(String name,
    			double amount, double overdraftLimit)
    	{
    		CurrentAccount acc = new CurrentAccount(name, amount, overdraftLimit);
    		return acc;
    	}
    Last edited by helloworld922; August 6th, 2010 at 09:00 AM.

  3. #3
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    Default Re: Help with programe please

    Does you new code work ok?

  4. #4
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    Default Re: Help with programe please

    use the highlight=java tags or the code tags so it is easier to read your code. I may be able to help you if it is easier to read.

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    Default Re: Help with programe please

    yes the new code does not come with any errors but i am not sure how to return the object back. i am sorry but i not sure which tag that aussiemcgr is talking about.

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    Default Re: Help with programe please

    I didn't look at the code in detail at all, but I see this:


    //THIS IS THE ERROR I AM GETTING "Cannot instantiate the type BankAccount"

    BankAccount acc = new BankAccount(name, amount);

    ...

    public abstract class BankAccount {

    ...

    If the class is abstract, you can't create an object of that class. You need to extend that class and implement the abstract methods first.

  7. #7
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    Default Re: Help with programe please

    i am not sure how to return the object back
    Can you show the code where you are having this problem?

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    Default Re: Help with programe please

     
    import java.util.List;
     
     
    public class BankManager implements _BankManager
    {
     
    	public BankAccountOutputVO ViewAccountSummary(String accountNumber)
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO closeAcount(String accountNumber)
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO createNewCurrentAccount(String name,
    			double amount, double overdraftLimit)
    	{
    		CurrentAccount acc = new CurrentAccount(name, amount, overdraftLimit);
    		// i am getting the error here.
    		return accl;
    	}
     
    	public BankAccountOutputVO createNewSavingsAccount(String name,
    			double amount)
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public List<BankAccountOutputVO> listAllAccounts()
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO makeDeposit(String accountNumber, double amount)
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO makeWithdrawal(String accountNumber,
    			double amount)
    	{
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    }

  9. #9
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    Default Re: Help with programe please

    i am getting the error here.
    What is the error? Please post full text.

  10. #10
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    Default Re: Help with programe please

    This is the error from the compile
    "Type mismatch: cannot convert from CurrentAccount to BankAccountOutputVO" the thing i am not sure about is what to call back. Thank you for ur help

  11. #11
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    Default Re: Help with programe please

    Please post full text.
    Please copy full text of error message and paste it here. Here is a sample:
    TestSorts.java:138: cannot find symbol
    symbol  : variable var
    location: class TestSorts
             var = 2;
             ^

  12. #12
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    Default Re: Help with programe please

    i am using eclipse and there there is not more information. thanks you.

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    Default Re: Help with programe please

    For tags, parse your code with the highlight wrap, put this before your code (I'm going to use * to represent [ and ] since I dont know how to stop parsing) *highlight=java* and this after your code */highlight*. And your code will look nice and colorful.

    Lets break it down. The error is specificially occuring here:
    public BankAccountOutputVO createNewCurrentAccount(String name,
    			double amount, double overdraftLimit)
    	{
    		CurrentAccount acc = new CurrentAccount(name, amount, overdraftLimit);
    		// i am getting the error here.
    		return accl;
    	}

    You should be getting a problem when you are trying to return accl, seeing how that variable doesnt exist.

    However, I assume you mean to return acc, so the reason your getting this issue is because CurrentAccount is a BankAccount and BankAccountOutputVO is not. You are saying you want to return a BankAccountOutputVO object, but you are attempting to return a CurrentAccount object. By the looks of it, a BankAccount Object is just a BankAccountOutputVO Object with added methods. I'm not sure about your assignment specificiations, but can you make BankAccount extend BankAccountOutputVO? I actually dont even see the point in having any BankAccountOutputVO Objects.

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    Default Re: Help with programe please

    we got given the bankaccounvo class. i am not sure if we can extended the class because the bankaccounvo class is a final class, and we got told not to edit this class. the code is not an assigment it be given to help us learn java.
    sorry i tried to call the BANKACCOUNTVO but the also gave with the same error
    Last edited by Newtojava; August 5th, 2010 at 10:51 AM.

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    Default Re: Help with programe please

    Why not have that method create and return what it is supposed to:
    public BankAccountOutputVO createNewCurrentAccount(String name,
                double amount, double overdraftLimit)
        {
            BankAccountOutputVO acc = new BankAccountOutputVO(.....);
             return acc;
        }

  16. #16
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    Default Re: Help with programe please

    Hi i tried to do that but i still get i null pointer exception. the same error as before thank you for your help.
    Last edited by Newtojava; August 6th, 2010 at 04:05 AM.

  17. #17
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    Default Re: Help with programe please

    Can you post the full error text and the code that is causing it?
    before you said the error was a mismatch, now you say its a null pointer exception.
    One is at compile time the other at execution time.

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    Default Re: Help with programe please

    Quote Originally Posted by aussiemcgr View Post
    For tags, parse your code with the highlight wrap, put this before your code (I'm going to use * to represent [ and ] since I dont know how to stop parsing) *highlight=java* and this after your code */highlight*. And your code will look nice and colorful.
    To ignore all parsing, you can use the [noparse] tag (lol, I had to surround this with the noparse tag)

    how to use the highlight tag:

    [highlight=Java]
    // code goes in here
    [/highlight]

    what it looks like:

    // code goes in here

  19. #19
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    Default Re: Help with programe please

    Thanks Guys for you help i managed to solve that problem. I was wondering how to save my new accounts in a list so i could manage these accounts. thank you.

  20. #20
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    Default Re: Help with programe please

    Is this problem solved?
    If so, please mark this thread as solved.

  21. #21
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    Default Re: Help with programe please

    one of the problem is solved i am just trying to create an array list to store all the account if you could give me some addvice on these. Thanks

  22. #22
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    Default Re: Help with programe please

    The are many code examples online. Use a Search to find some.
    Basically you create an ArrayList object and use its add() method to add objects to it.

  23. The Following User Says Thank You to Norm For This Useful Post:

    Newtojava (August 10th, 2010)

  24. #23
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    Default Re: Help with programe please

    Thanks for all your help. i started to understand the basics of java programming now.

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    Default Re: Help with programe please

    Hi i have written this code but i am not sure how to add the imformation from the interface to the arraylist

    package com.fdm.bank;
     
    import java.util.ArrayList;
     
    public class Storage {
     
    	private ArrayList<Integer> CurrentAccount = new ArrayList<Integer>();
     
    	public void add(int number) {
    		CurrentAccount.add(number);
    	}
     
    	public ArrayList<Integer> getList() {
    		return CurrentAccount;
    	}
     
    }
    package com.fdm.bank;
    import java.util.ArrayList;
    import java.util.List;
     
    public class BankManager implements _BankManager {
     
    	public BankAccountOutputVO ViewAccountSummary(String accountNumber) {
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO closeAcount(String accountNumber) {
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO createNewCurrentAccount(String name,
    			double amount, double overdraftLimit) {
    		// long accNumber = BankAccount.randomAccNo();
    		CurrentAccount currentAcc = new CurrentAccount(name, amount,
    				overdraftLimit);
     
    		BankAccountOutputVO bao = new BankAccountOutputVO(currentAcc
    				.getAccountNumber()
    				+ "", currentAcc.getAccountType(), currentAcc.getName(),
    				currentAcc.getOverdraft() + "", currentAcc.getAmount() + "",
    				true);
     
    		return bao;
     
    	}
     
    	public BankAccountOutputVO createNewSavingsAccount(String name,
    			double amount) {
    		SavingAccount savingAcc = new SavingAccount(name, amount, amount);
     
    		BankAccountOutputVO bao = new BankAccountOutputVO(savingAcc
    				.getAccountNumber()
    				+ "", savingAcc.getAccountType(), savingAcc.getName(),
    				savingAcc.getOverdraft() + "", savingAcc.getAmount() + "", true);
     
    		return bao;
    	}
     
    	public List<BankAccountOutputVO> listAllAccounts() {
     
    		Storage BankAccount = new Storage();
     
    		BankAccount.add(5);
     
    		ArrayList<Integer> list = BankAccount.getList();
     
    		for (Integer counter : list) {
    			System.out.println(counter);
    		}
     
    		return null;
     
    	}
     
    	public BankAccountOutputVO makeDeposit(String accountNumber, double amount) {
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    	public BankAccountOutputVO makeWithdrawal(String accountNumber,
    			double amount) {
    		// TODO Auto-generated method stub
    		return null;
    	}
     
    }

  26. #25
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    Default Re: Help with programe please

    how to add the imformation from the interface to the arraylist
    Can you explain where your problem is?
    What is the information?
    what is the interface?

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