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Thread: Printing Output from an array in a gui form.

  1. #1
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    Unhappy Printing Output from an array in a gui form.

    I'm using Netbeans to creat a Java Swing Gui form. I'm stuck creating output in an array that will print out in a text area box.

     
           double tutorArray [] [] = new double [4][2];
           int counter;
           int i  = 0;
           int j = 0;

    The user inputs two values at a time and then presses the enter button:

     
     double salary = Double.parseDouble (salaryTextField.getText ());
           double week = Double.parseDouble (wagesTextField.getText ());
     
           try
         {
             {if (minutes <= 0 || minutes > 4500|| wages <= 4) 
              throw new IllegalArgumentException ();
              }
        }                                           
          catch (IllegalArgumentException exception)
          {
           dataTextArea.setText("Invalid input.  Please try again.");
           return;
          }
     
            dataTextArea.setText("");
            tutorArray [counter] [0] = salary;
            tutorArray [counter] [1] = weeks;
            counter++;
             for (int i = 0; i <= 4 ; i++){
              for (int j = 0; j <= 2; j++) {
                 String line = String.format ("%2d", tutorArray[i][j]);
                 dataTextArea.append (line);
              counter++;     
              }
           }

    3. Once the user finishes entering his information, a 2d Array should be generated when he presses the "run report" button:

     private void runReportButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                
            // TODO add your handling code here:
        }

    I have tried multiple times to write the code for a 2d array that has 4 rows and two columns containing the information entered by the users - minutes and wages.

    Any pointers?
    Last edited by Norm; December 28th, 2012 at 07:47 AM. Reason: Removed = Java from code tags


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Printing Output from an array in a gui form.

    What is in the array after the code assigns values to it?
    Use the Arrays class's deepToString() method to format the array for printing:
    System.out.println("an ID "+ java.util.Arrays.deepToString(theArrayName));

    Can you explain what the code does and what it is not doing that you want it to do?
    Obviously this needs to be replaced with some code:
    // TODO add your handling code here:
    If you don't understand my answer, don't ignore it, ask a question.

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