File file chooser

Question

Hi.
I have a JFrame (main frame), that opens another JFrame (popup frame) when u click a button, and in this frame I have a file chooser. The problem is, when i open the file chooser, the popup frame closes (shuts down) while the main frame stais put. How can i prevent the popup frame from closing when clicking the file chooser button?
here's the code for the file chooser:
FileChooser fc = new FileChooser();
int returnVal = fc.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION)
File file = fc.getSelectedFile();
String fileName = file.getName();
JDialog chooseFileFrame = new JDialog();
Container content2 = chooseFileFrame.getContentPane();
content2.show();

Answer 1

Nope. both main frame and popup frame are JFrames. Here's the rest of the code:
I have a JFrame, fullcreen, contains a button Button_popup, that calls a new JFrame:
//call file chooser button
JButton chooseFileButton = new JButton("choose file");
//popup frame (that closes when i opens the file chooser
JFrame popUp= new JFrame("Heading");
popUp.setUndecorated(true);
popUp.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
popUp.setBounds(0,0,600,500);
Container content = popUp.getContentPane();
content.setBackground(Color.white);
content.add(chooseFileButton);
adds the file chooser button to my action listener, if hit:
private void chooseFile()
if (returnVal == JFileChooser.APPROVE_OPTION)
File file = fc.getSelectedFile();
String file= file.getName();
JDialog fileChooserDialog= new JDialog();
Container content = fileChooserDialog.getContentPane();
content.show();
}