Show JInternalframe Instead of JFrame

[Chernenko Nencor]

hello, i've made some code here

public class Cl_Masterconsole extends JFrame {
public void showMasterConsole()
	{	
		JButton buttoncancel, buttonsave, buttoninsert, buttonupdate, buttondelete;
		JLabel labelformtitle, labelconsolid,labelname,labelprice,labelstock,labelimage;
		JSpinner spinnerstock;
		JTable tableconsole;
		JFileChooser filechooser;
		JPanel panelatas, paneltengah, panelbawah;

		JDesktopPane desk = new JDesktopPane();
		JInternalFrame internalframemasterconsole = new JInternalFrame();
		
		String[]tabelkolom = {"Console ID", "Name", "Price", "Stock", "Images"};
		labelformtitle = new JLabel(form_title,SwingConstants.CENTER);
		internalframemasterconsole.add(labelformtitle,BorderLayout.PAGE_START);
		
		
		internalframemasterconsole.setVisible(true);
		setResizable(false);
		setLocationRelativeTo(null);
		
		desk.add(internalframemasterconsole);
		setContentPane(desk);					
		setVisible(true);		
		//internalframemasterconsole.setVisible(true); not show anything
		
	}	
}

when i debug the Application, it shows


here's my code on the Main Form (with Menubar on it)

		Consolemastermenu = new JMenuItem(new AbstractAction(menuitem_consolemastermenu) {
			
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
//				cmd.printSuccess("Show Menu Console", form_name);
				masterconsoleform = new Cl_Masterconsole();
//				cmd.printSuccess("Show Menu Console 2", form_name);
				masterconsoleform.showMasterConsole();							
			}
		});

how can i show MasterConsole internalframe ?
why is Labelformtitle not showing ?

[Campbell Ritchie]

Did you set any sizes for the frame or the internal frame?

[Chernenko Nencor]

Campbell Ritchie wrote:Did you set any sizes for the frame or the internal frame?

neither did i,

which one do i have to set the sizes, frame, or JInternalframe ?

[Rob Camick]

which one do i have to set the sizes, frame, or JInternalframe ?

Read the section from the Swing tutorial on How to Use Internal Frames.

Download the demo code and use it as a starting point. The code will be better structured than your current code.