Problems using JTabbedPane In a GUI application

[Rudy Rodriguez]

Hi

I making a GUI application, that uses JTabbedPane.
Each of the tab panes need to contain the same Jlabels.
I will add textboxes with specific information, once the Tab GUI's are completed.
I created button objects, they seem to appear correctly on the tab panes.
But the labels seem to not appear, on the other tab panes.

I am having problems in that the labels display on the last tab created, and not on the others.

I have included my code below.

Can anyone help ?

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author rrodriguez
 */

package tabbedpaneproject;
import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JTabbedPane;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.SwingConstants;

public class JTabbedPanelFrame extends JFrame
{
    JLabel SltInput = new JLabel("Log Source File : ");
    JLabel SltSource = new JLabel("Log Output File : ");
    JLabel SltWaterResources = new JLabel("Total Water Resources : ");
    JLabel SltFuelResources = new JLabel("Total Fuel Resources : ");
    JLabel SltInitFuel = new JLabel("Initial Fuel Amount : ");
    JLabel SltInitWater = new JLabel("Initial Water Amount : ");
    JLabel SltTotalWater = new JLabel("Total Water Consumed : ");
    JLabel SltTotalFuel = new JLabel("Total Fuel Consumed : ");
    JLabel SltScenarioTime = new JLabel("Scenario Time : ");
    
    // set up GUI
    public JTabbedPanelFrame() // line 13 error
    {
        super( "JTabbedPane Demo " );
        int panel_index = 1;
        int count = 2;
        
        JTabbedPane tabbedPane = new JTabbedPane();// create JTabbedPane
        
      /* (SltInput);
        (SltSource);
        (SltScenarioTime);
        (SltWaterResources);
        (SltFuelResources);
        (SltInitWater);
        (SltTotalWater);
        (SltTotalFuel);*/
        
        JPanel locinfoPanel = new JPanel();
      //  locinfoPanel.add(SltInput);
      //  locinfoPanel.add(SltSource);
      //  locinfoPanel.add(SltWaterResources);
      //  locinfoPanel.add(SltFuelResources);
        
        for(int index = 0; index < count; index++)
        {
            // set up panel and add it to JTabbedPane
            JLabel label = new JLabel( "panel " + panel_index );
            JPanel panel = new JPanel(); // create third panel 
            
            // JPanel locinfoPanel = new JPanel();
            locinfoPanel.add(SltInput);
            locinfoPanel.add(SltSource);
            locinfoPanel.add(SltWaterResources);
            locinfoPanel.add(SltFuelResources);
            
            panel.setLayout( new BorderLayout() ); // use borderlayout
            //panel.add( new JButton( "North " + panel_index), BorderLayout.NORTH );
            
            
            panel.add(locinfoPanel, BorderLayout.NORTH);
            panel.add( new JButton( "West " + panel_index), BorderLayout.WEST );
            panel.add( new JButton( "East " + panel_index), BorderLayout.EAST );
            panel.add( new JButton( "South " + panel_index), BorderLayout.SOUTH );
            
            panel.add( label, BorderLayout.CENTER );
           
            tabbedPane.addTab( "Tab " + panel_index, null, panel, panel_index + " Panel" );
        
            add(tabbedPane);
            panel_index++;
        }
        
        setSize(750, 750);
        setVisible(true);
       
    } // end JTabbedPaneFrame constructor
    public static void main(String[] args)
    {
        new JTabbedPanelFrame();
    }
} // end class JTabbedPaneFrame
    

[Rob Spoor]

Each component can only be added to one single parent component. So when you're calling

panel.add(locinfoPanel, BorderLayout.NORTH);

that only works with one of the tab panels. All the others will not have the same panel. You'll need to create a new locinfoPanel with all of its contents for each tab you want to add it to.

[Rudy Rodriguez]

Hi Rob.

I tried running my code with the modified for loop below, It had no effect to the GUI.
The panel with the locinfoPanel only displayed on the last tab panel.

In the loop I create a new locinfoPanel, and insert the labels each run through the loop.

Can you give me any suggestions..

Thanks

for(int index = 0; index < count; index++)
        {
            // set up panel and add it to JTabbedPane
            JLabel label = new JLabel( "panel " + panel_index );
            JPanel panel = new JPanel(); // create panel for Tabbedpane
            
            JPanel topPanel = new JPanel();
             topPanel.setLayout(new FlowLayout());
             topPanel.add(SltInput);
             topPanel.add(SltSource);
             topPanel.add(SltWaterResources);
             topPanel.add(SltFuelResources);
            
            panel.setLayout( new BorderLayout() ); // use borderlayout
          
            //  panel.add( new JButton( "North " + panel_index), BorderLayout.NORTH );
                       
            panel.add(topPanel, BorderLayout.NORTH);
            panel.add( new JButton( "West " + panel_index), BorderLayout.WEST );
            panel.add( new JButton( "East " + panel_index), BorderLayout.EAST );
            panel.add( new JButton( "South " + panel_index), BorderLayout.SOUTH );
            
            panel.add( label, BorderLayout.CENTER );
           
            tabbedPane.addTab( "Tab " + panel_index, null, panel, panel_index + " Panel" );
        
            add(tabbedPane);
            
            panel_index++;
        }    

[Rob Spoor]

You just shifted the problem.

topPanel.setLayout(new FlowLayout());   
topPanel.add(SltInput);   
topPanel.add(SltSource);   
topPanel.add(SltWaterResources);   
topPanel.add(SltFuelResources);

Those 4 JLabels still can have only one parent, and that's the last created topPanel.

[Rudy Rodriguez]

Rob,
I understand what you are saying in regards to the labels having one parent.
And that parent would be displayed on the last tab created.

I am unsure as to how to be able to dynamically create multiple parents to be displayed on multiple tab panes.

I have tried to attach a index or counter to my parent topPanel, such as topPanel[index].
The IDE treated this as trying to create a array.

How can I solve my problem ??

Thanks

[Rob Spoor]

Simply create the JLabels just like you create the panels inside the loop.

[Rudy Rodriguez]

Rob,
Thank You....
I followed your advice..

I got it working..