Thread: 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