OK, but the items are stored in the database, is there a way that i don't need to add a blank row in the database
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Re: JComboBox issue. If user selects any item do this... (if statment)
OK, but the items are stored in the database, is there a way that i don't need to add a blank row in the database
Re: JComboBox issue. If user selects any item do this... (if statment)
You can add the new blank item at runtime, as well as the items from the database.
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Re: JComboBox issue. If user selects any item do this... (if statment)
i think adding a blank item in runtime would be better. How would i be able to do that?Sorry.
Thanks
Last edited by kpat; April 3rd, 2012 at 09:11 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
Use the JComboBox.insertItemAt(Object,0); method.
NOTE TO NEW PEOPLE LOOKING FOR HELP ON FORUM:
When asking for help, please follow these guidelines to receive better and more prompt help:
1. Put your code in Java Tags. To do this, put [highlight=java] before your code and [/highlight] after your code.
2. Give full details of errors and provide us with as much information about the situation as possible.
3. Give us an example of what the output should look like when done correctly.
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Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:27 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
What variable has the null value?i got this error java.lang.NullPointerException?
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kpat (April 3rd, 2012)
Re: JComboBox issue. If user selects any item do this... (if statment)
I managed to fix the problem, after some playing around thanks to both of you.
Norm & aussiemcgr thank you both for your help and support when i had a problem.
Last edited by kpat; April 3rd, 2012 at 11:06 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:26 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
Please make a small, simple program that compiles, executes and shows the problem.
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Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:26 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
When you wanted to insert the empty String into the list.
If you don't understand my answer, don't ignore it, ask a question.
Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:27 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
What happens when you execute the insertItemAt("",0) method?
Where is the empty String added?
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Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:27 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
Can you show an example by making a list and adding comments to describe the problem:
first item << can see this one
second item
third item
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Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:26 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
Have you tried any of the JComboBox class's methods to change what is shown?
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Re: JComboBox issue. If user selects any item do this... (if statment)
yer but nothing. i tried messing around with the placing and setSelectedIndex(-1) and etc. any ideas?
Re: JComboBox issue. If user selects any item do this... (if statment)
I'd use one of the JComboBox methods.
If you don't understand my answer, don't ignore it, ask a question.
Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved
Last edited by kpat; April 8th, 2012 at 07:26 AM.
Re: JComboBox issue. If user selects any item do this... (if statment)
Do you have the API doc? Read it looking for any methods that will do what you want. Try all that look useful with lots of different combinations of arguments and see if any of them do what you want.
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Re: JComboBox issue. If user selects any item do this... (if statment)
ok fine thanks
Re: JComboBox issue. If user selects any item do this... (if statment)
I think you will have to use one of the class's methods. You can experiment the same as I would have to experiment to find it. You will learn something by doing the experiments that will help you in the future.
If you don't understand my answer, don't ignore it, ask a question.
Re: JComboBox issue. If user selects any item do this... (if statment)
problem solved thanks guys
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