Grid abck layout problem using swing components

Question

JScrollPane jsp1 = new JScrollPane(table1,k,i);
JPanel ja = new JPanel();
JCheckBox c1 = new JCheckBox();
JCheckBox c2 = new JCheckBox();
JCheckBox c3 = new JCheckBox();
JLabel j = new JLabel("Button");
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
ja.setLayout(gbl);
gbc.gridwidth = 10;
gbc.gridheight = 10;
gbc.gridx = 0;
gbc.gridy = 0;
gbl.setConstraints(j,gbc);
add(j);
gbc.gridx = 1;
gbc.gridy = 1;
gbl.setConstraints(c2,gbc);
add(c2);
gbc.gridx = 2;
gbc.gridy = 2;
gbl.setConstraints(c3,gbc);
add(c3);
gbc.gridx = 3;
gbc.gridy = 3;
gbl.setConstraints(jsp1,gbc);
add(jsp1);
this my code for grid bag layout but when i run this code it is showing only empty panel..no components..
of course iam not posting entire code of tis class..because it is lenghty..
regards,
sam

Answer 1

Well, you set JPanel ja's layout to GridBagLayout, but it appears your adding the components to the parent, eg. add(j) should be ja.add(j) if you want it on JPanel ja. This is true for all your component adds.
By the you can combine the setConstraints( ) and add calls: ja.add(j, bgc);
Hope that helps.
Cheers
DB