Newbie questions

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Allen - 11 May 2004 20:51 GMT

I am a relative newcomer to Java and am using the Netbeans 3.6 IDE. I have
a couple of small projects that I am using to learn the basics. One is an
insurance form and all the text fields need to be filled in. I have tried
to validate this by using something along the lines of:

if txtAge.getText("")
doSomething;
else
doSomeThingElse;

This throws an error. Can somebody point me in the right direction for
validation of a text field?

My other project is a calculation project. It hasd 2 text fields for
entering numbers and four radio buttons to choose wether to add, subtract,
multiply or divide. I cannot figure out how to determinw which radio button
is selected!! Help!!!!!

TIA

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Andrew Thompson - 11 May 2004 21:00 GMT

F'Ups set to c.l.j.help

> I am a relative newcomer to Java ...

<http://www.physci.org/codes/javafaq.jsp#cljh>

>..and am using the Netbeans 3.6 IDE.

<http://www.xdweb.net/~dibblego/java/faq/answers.html#q34>

> insurance form and all the text fields need to be filled in. I have tried
> to validate this by using something along the lines of:

...

> This throws an error.

<http://www.physci.org/codes/javafaq.jsp#exact>

> ...Can somebody point me in the right direction ...

<http://www.physci.org/codes/sscce.jsp>

> My other project is a calculation project.

Woah there!
One noob problem at a time, please!

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Andrew Thompson
http://www.PhySci.org/ Open-source software suite
http://www.PhySci.org/codes/ Web & IT Help
http://www.1point1C.org/ Science & Technology

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Roedy Green - 11 May 2004 21:23 GMT

>if txtAge.getText("")
> doSomething;
[quoted text clipped - 3 lines]
>This throws an error. Can somebody point me in the right direction for
>validation of a text field?

this is not Java code by a long shot. At least get it to compile
before posting.

--
Canadian Mind Products, Roedy Green.
Coaching, problem solving, economical contract programming.
See http://mindprod.com/jgloss/jgloss.html for The Java Glossary.

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SZDev - Slash - 13 May 2004 19:16 GMT

> I am a relative newcomer to Java and am using the Netbeans 3.6 IDE. I have
> a couple of small projects that I am using to learn the basics. One is an
[quoted text clipped - 5 lines]
> else
> doSomeThingElse;

may be

if (txtAge.getText().equals(""))
doSomething();
else
doSomethingElse();

> This throws an error. Can somebody point me in the right direction for
> validation of a text field?
[quoted text clipped - 3 lines]
> multiply or divide. I cannot figure out how to determinw which radio button
> is selected!! Help!!!!!

You must add all the radioButtons to a ButtonGroup, this way only one can be
selected at the time.

Then you can call radioButton.isSelected()

> TIA
>
[quoted text clipped - 5 lines]
>
> Handy utils here: http://www.allenjones.co.uk/utils.htm

Santiago Zapata
SZDev/Slash

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