Objects not showing up in jPanel

Question

I've got a jPanel that gets a number of jTextField objects added to it. The number added two it varies so it's set up like this:
public void addBoxs(int num) {
for (int z = 0; z < num; z++) {
box[z] = new JTextPane();
box[z].setBorder(BorderFactory.createRaisedBevelBorder());
box[z].setBorder(BorderFactory.createRaisedBevelBorder());
box[z].setMaximumSize(new Dimension(19, 19));
box[z].setMinimumSize(new Dimension(19, 19));
box[z].setPreferredSize(new Dimension(19, 19));
box[z].setEditable(false);
box[z].setMargin(new Insets(5, 5, 5, 5));
box[z].setText("test");
jPanel4.add(box[z],null);
System.out.println("Added box # " + z);
Where the method is called and passed a variable for the number of boxs. However, when the method runs, the boxs never show up. Why is this? I've tried doing jPanel4.repaint() but that doesn't help either. How do I get them to show up? Thanks.
-Gallamine

Answer 1

Worked for me. Here's the scaffoding I put around your code:JPanel jPanel4 = new JPanel();
// Should declare and init 'box' INSIDE addBoxs, so you can get the
// number of elements from 'num'
JTextPane[] box = new JTextPane[4];
FileTest.addBoxs(4);       
JFrame window = new JFrame("TEST");
window.setBounds(100, 100, 300, 300);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.getContentPane().add(jPanel4);
window.pack();
window.setVisible(true);Are you putting jPanel4 into a JFrame? Are you giving jPanel4 a LayoutManager that's squishing all your TextPanes into a 1x1-pixel area at (0,0)? Are you doing a pack() on your JFrame?
Grant