[nbusers] Re: For Loop, Array, TextArea

  • From: Edson Richter < >
  • To:
  • Subject: [nbusers] Re: For Loop, Array, TextArea
  • Date: Mon, 15 Oct 2012 19:54:20 -0300
  • Organization: Simkorp Inform├ítica Ltda

Em 15/10/2012 10:36, coderkid escreveu:
Edson Richter wrote:
Em 15/10/2012 10:07, coderkid escreveu:

Edson Richter wrote:

Take a look here:

http://docs.oracle.com/javase/tutorial/uiswing/index.html

Regards,

Edson




Thanks for the reply, but I am having no trouble creating the actual GUI (just using 
Java Desktop Application Template). The problem I am having is with creating the loop 
that does power function and puts the sentences to the text area. Just putting 
textarea.setText("Hello") does nothing: nothing appears in the text area.



Well, most of the issues on this nature come from Threading issues.
Again, check documentation regarding SwingUtilities.
The link above has lots of information on how to (or how not) update
Swing components.

Regards,

Edson


Thanks again, Edson. I will try and look through the documentation more 
thoroughly. Would you, perhaps, know why the following code is not working:

   public void calculateButtonActionPerformed(java.awt.event.ActionEvent evt) 
  {

  double userBaseNumber = Double.valueOf(userBaseInputField.getText());
  int userExponentNumber = Integer.valueOf(userExponentInputField.getText());
  String userBaseString = userBaseInputField.getText();
int exponentNumber=1;
for(int i=1;i<=userExponentNumber;i++){

                 exponentNumber+=i;
         }
         String exponentNumberString = Integer.toString(exponentNumber);
         Double exponentNumberDouble = 
Double.parseDouble(exponentNumberString);
         outputAnswerField.setText(userBaseString+"to the 
exponent"+exponentNumberString+"equals"+Double.toString(Math.pow(userBaseNumber,exponentNumberDouble)));
     }




What do you mean by not working?

Edson


[nbusers] For Loop, Array, TextArea

coderkid 10/14/2012

[nbusers] Re: For Loop, Array, TextArea

Edson Richter 10/15/2012

[nbusers] For Loop, Array, TextArea

coderkid 10/15/2012

[nbusers] Re: For Loop, Array, TextArea

Edson Richter 10/15/2012

[nbusers] For Loop, Array, TextArea

coderkid 10/15/2012

[nbusers] Re: For Loop, Array, TextArea

Edson Richter 10/15/2012

[nbusers] Re: For Loop, Array, TextArea

Bayless Kirtley 10/15/2012

[nbusers] For Loop, Array, TextArea

coderkid 10/16/2012

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