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Thread: Java Netbeans Swing - want to create x jlabels by entering a number

  1. #1
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    Post Java Netbeans Swing - want to create x jlabels by entering a number

    Hello guys,

    I have one iFrame where I can enter a number x. After that, it creates a new JDialog. In this Jdialog, I want to create x JPanels in a matrix, but it does not work. This is my code:


    public TeilnehmerDialog(java.awt.Frame parent, boolean modal) {
            super(parent, modal);
            initComponents();
            myViewController = new ViewController();
     
           int eingabe = myViewController.getTeilnehmer();
           String test = Integer.toString(eingabe);
           String prnr = "Prüfungsnummer: "; 
           String name = "Name: ";
     
     
     
           JLabel[] jlabelsprnr = new JLabel[eingabe]; 
     
           for (int i = 0; i < eingabe; i++) {
               jlabelsprnr[i] = new JLabel(prnr);
           }
     
     
     
           int GRID_ROWS = 2; 
           int GRID_COLS = 2; 
     
     
           GridBagLayout gbl = new GridBagLayout(); 
            setLayout(gbl); 
            GridBagConstraints gbc = new GridBagConstraints(); 
            gbc.weightx = 0.2; 
            gbc.weighty = 0.25; 
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(5,5,5,5); //space that a container must levea at ech of its edges (to the border)
            gbc.gridwidth = 1; 
            gbc.gridheight = 1;  
     
            int index = 0; 
     
     
                      for (int i = index; i < eingabe; i++) {   
     
                          for (int row = 0; row < GRID_ROWS; row++) {
     
                               for (int col = 0; col < GRID_COLS;  col++) {
     
                                  gbl.setConstraints(jlabelsprnr[index], gbc);
                                  add(jlabelsprnr[index]);
                                  jlabelsprnr[index].setVisible(true);
                                  System.out.println(jlabelsprnr[index].getText());
     
                        //   index++;
                            } 
                        }
                    }
    }

    and this is my output:

    run:
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer: 
    Prüfungsnummer:
    for entering number 4!

    Thank you

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Java Netbeans Swing - want to create x jlabels by entering a number

    How can the code be compiled and executed for testing? I do not see a main method that is needed to execute a java program.

    Is there anything wrong with the program's output? Please explain.

    it does not work
    Please explain what the program does and what you want to change about how it executes.
    If you don't understand my answer, don't ignore it, ask a question.

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