I found some code online, I edited it a bit. I want to hide title bar of a JInternalFrame.
JInternalFrame frame = new JInternalFrame();
// Get the title bar and set it to null
setRootPaneCheckingEnabled(false);
javax.swing.plaf.InternalFrameUI ifu= frame.getUI();
((javax.swing.plaf.basic.BasicInternalFrameUI)ifu).setNorthPane(null);
frame.setLocation(i*50+10, i*50+10);
frame.setSize(200, 150);
//frame.setBackground(Color.white);
frame.setVisible(true);
desktop.add(frame);
The problem is that the title bar isn't being hidden for some reason. Thanks.
I solved this problem this way: I subclass JInternalFrame and add the following code to its constructor. (I get the subclassing for free because I use netBeans' GUI Builder)
((javax.swing.plaf.basic.BasicInternalFrameUI)this.getUI()).setNorthPane(null);
in your case I think