Convert to JTable, validation, more

Hello everyone,
I'm currently doing my project and a bit short of time. I'm a really bad programmer and struggling with this. There are some things I need help with and would really appreciate your assistance. Here is my program right now, it's not complete just yet: http://www.mediafire.com/download.php?zrkjnmdhduz
1) Why doesn't the dispose() work in PasswordLogin.java?
2) I've been told my current way of displaying the accounts and products is messy and should rather convert it to a JTable. Could someone possibly help me with that/do the code and paste it back to me. I looked at the example on this website but failed :/
3) When deleting an account/product there's no validation if I enter text (and the program crashes). What's the best way to implement some kind of validation?
4) I can't get the order to work. I need to minus the product price off the account balance and lower the product quantity. I've tried a dozen times to get it to work :/
This is currently what I need to do. If there's anything else you guys would recommend me changing/fixing please let me know. I know it sounds like I'm asking for a lot but we were told if we need help with anything we should make use of this forum.
Thank you.

squirreltjie wrote:
I'm currently doing my project and a bit short of time. I'm a really bad programmer and struggling with this. There are some things I need help with and would really appreciate your assistance. Here is my program right now, it's not complete just yet: http://www.mediafire.com/download.php?zrkjnmdhduz
You're probably going to get few takers on this. Please understand that we're all volunteers here and will gladly help, but you have to be willing to put in more effort than you ask of us. This should seem fair when you're asking for free advice, no? You're far better off posting any problem code that you have here in the forum, but if you do, please use code tags (see below), and try to only post code that is relevant to your problem and hopefully code that compiles. This is called an SSCCE or Short, Self Contained, Correct (Compilable), Example. You can read up on this here: SSCCE
2) ... Could someone possibly help me with that/do the code and paste it back to me. ...this == cheating and is frowned upon here. Please create your own code and ask questions about your code.
This is currently what I need to do. If there's anything else you guys would recommend me changing/fixing please let me know. I know it sounds like I'm asking for a lot but we were told if we need help with anything we should make use of this forum.No problem, but please do things the right way and you'll have lots of help. Do things wrong and you'll get scorn. Please also read this link on how to ask good questions. It has helped me in the past and will probably help you too: [How To Ask Questions The Smart Way|http://www.catb.org/~esr/faqs/smart-questions.html]
when posting your code, please use code tags so that your code will retain its formatting and be readable. To do this, you will need to paste already formatted code into the forum, highlight this code, and then press the "code" button at the top of the forum Message editor prior to posting the message. You may want to click on the Preview tab to make sure that your code is formatted correctly. Another way is to place the tag [code] at the top of your block of code and the tag [/code] at the bottom, like so:
[code]
// your code block goes here.
// note the differences between the tag at the top vs the bottom.
[/code]

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