Thread: Having trouble with Jpanel design view forms :(

apologies if my terminology is terrible

If I place a jpanel on the form using design view , The variable Declarations are protected . Is there anyway around this ?

specifically for

private JPanel slotsPanel = new JPanel(new GridLayout(8, 8));

OK Tried to add post-declaration code of */private JPanel jPanel1 = new JPanel(new GridLayout(8, 8)); but no luck . Compiles fine but no display

Essentially all code seems to be the same , but It will not draw the board when it comes to the design view form .

But If I build the exact same one using a class file it works fine

Heres the code for the actual NewjPanel . pretty much the same . Anyone know why it won't display yet will in a class file ?

public class NewJPanel extends javax.swing.JPanel {
 
    /** Creates new form NewJPanel */
    public NewJPanel() {
        initComponents();
        CreateUI();
    }
 
    public void CreateUI() {
        JFrame window = new JFrame("Test");
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setBounds(50, 50, 400, 400);
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(CreateDisplay(), BorderLayout.CENTER);
        window.add(panel, BorderLayout.CENTER);
       window.setVisible(true);
 
    }
 
    private JPanel CreateDisplay() {
        JPanel mainPanel = new JPanel(new BorderLayout());
 
        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 8; j++) {
                final JPanel slots = new JPanel();
                slots.setBorder(BorderFactory.createLineBorder(Color.black));
                slots.setBackground(new Color(255, 222, 188));
                slots.addMouseListener(new MouseListener() {
                    public void mouseClicked(MouseEvent me) {
                    }
                    public void mousePressed(MouseEvent me) {
                    }
                    public void mouseReleased(MouseEvent me) {
                    }
 
                    public void mouseEntered(MouseEvent me) {
                          slots.setBackground(new Color(255, 255, 188));
                    }
                    public void mouseExited(MouseEvent me) {
                          slots.setBackground(new Color(255, 222, 188));
                    }
                });
 
               jPanel1.add(slots);
            }
        }
 
        mainPanel.add(jPanel1, BorderLayout.CENTER);
        return mainPanel;
    }
 
    /** This method is called from within the constructor to
 
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jPanel1 = new javax.swing.JPanel();
 
        jPanel1.setBackground(new java.awt.Color(255, 255, 255));
 
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 459, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 430, Short.MAX_VALUE)
        );
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(269, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(63, Short.MAX_VALUE))
        );
    }// </editor-fold>
 
    public static void main(String[] args) {
 
    new NewJPanel();
 
        // TODO code application logic here
    }
 
   // private JPanel slotsPanel = new JPanel(new GridLayout(8, 8));
 
    // Variables declaration - do not modify
    /*
    private javax.swing.JPanel jPanel1;
    */private JPanel jPanel1 = new JPanel(new GridLayout(8, 8));
    // End of variables declaration
 
}

Originally Posted by Norm

Can you explain what you mean here? Why the capital D?
How are the declarations protected? Who protects them?


If you got errors, please copy and paste the full text here.

Are you having a problem with your IDE?


This is another strange one. You don't work with class files. They are created by the compiler.

Apologies and thanks for your time. I originally coded it for instance in the main.java file . The first one compiles fine and displays , tracks movement and such . In the picture provided its the top program and is the main.java file

The one beneath it however is the one using the jform ( newjpanel.java ). Same code but doesn't seem to be working at all

Everything seems to be compiling fine , but I don't understand why it won't display in the newjpanel form

http://img97.imageshack.us/img97/854/netbean.jpg shows the forms / program

This is what confuses me , i can only see it being defined once . If i try to redeclare it anywhere I will get "Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - jPanel1 is already defined in Test.NewJPanel"

I use the post declarations to change that to "private JPanel jPanel1 = new JPanel(new GridLayout(8, 8));" . Yet it doesn't seem to work and its the only time its ever defined

I can create one from scratch in the code if it doesn't coincide with another created element from the design view . But that seems redundant as I would like to be able to place it using the form designer