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Thread: changing GUI

  1. #1
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    Default changing GUI

     public void incometaxcreator()
           {
           JFrame incometaxframe = new JFrame("income tax generator");
           JButton createincometax = new JButton("generate a list");
           JTextArea outputbox = new JTextArea();
           JTextArea inoutbox = new JTextArea();
     
     
          incometaxframe.add(createincometax, BorderLayout.EAST);
          incometaxframe.add(outputbox, BorderLayout.WEST);
          incometaxframe.add(inoutbox, BorderLayout.CENTER);
     
          outputbox.setPreferredSize(new Dimension (500,200));
          incometaxframe.setVisible(true);
          incometaxframe.setDefaultCloseOperation(incometaxframe.EXIT_ON_CLOSE);
          incometaxframe.setPreferredSize(new Dimension (1000,400));
          incometaxframe.pack();
     
     
     
    //create the listener that generates the list
    createincometax.addActionListener(new ActionListener( ) {
     
                public void actionPerformed(ActionEvent e)
                {
                    //get the information from the textarea and store as a string
                    String input= inoutbox.getText();
                    String output= input;
                     //create the patterns and matchers
     
                    Pattern student = Pattern.compile("cat");
     
                    Matcher studentmatcher = student.matcher(output);
     
     
     
     
                   output =studentmatcher.replaceAll(Current.getStudentName());
     
                     outputbox.setText(output);

    the problem is that it won't allow me to setText to the output box because this is in a different method how do i get around this?


  2. #2
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    Default Re: changing GUI

    Instead of making the JTextArea entirely inside a method, declare say "private JTextArea outputbox;" and then initialise it afterwards.
    Currently the scope of output box is local to incometaxcreator()
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

  3. #3
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    Default Re: changing GUI

    well netbeans is giving me a green light but i don't see anything but that could be for plenty of reasons
    thanks

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