im new with having problem on gridbag layout(my classwork)... im trying to stick a header(label) and a scrollpane(with a JList attach to scrollpane) to a tabbedpane
which the outcome may look like this

but for some scrollpane doesnt want to show up...
i need some help and tips from you guys and girls..

import java.awt.*;
import java.awt.event.*;
import javax.swing.UIManager;
import javax.swing.*;
import javax.swing.event.*;
import java.util.*;
import java.text.*;

//Start of Assign2
public class Assign2 
	Dimension screenSize, frameSize;	// screen size variables
	Font largeFont = new Font("Default", Font.BOLD, 18); 
	JFrame thisFrame;

//Standard constructor, most of the code for the program will be run from here
	public Assign2()
		Assign2Frame frame = new Assign2Frame();
		frame.setSize(500,350); //Set Screen Size
		//Exit Listener
		frame.addWindowListener(new WindowAdapter()
			public void windowClosing(WindowEvent e)
		frame.setVisible(true); //Must sets frame as visibles

//Position the Frame to the centre of the screen, everytime the program starts
//     frame.setLocation((screenSize.width - frameSize.width) / 2,
//                       (screenSize.height - frameSize.height) /2 );

	public static void main(String [] args)
		catch (Exception e)
		new Assign2();

	public void disclaimer()
		System.out.println("My work + Other ppl's help too");

import java.awt.*;
import java.awt.event.*;
import javax.swing.UIManager;
import javax.swing.*;
import javax.swing.event.*;
import java.util.*;
import java.text.*;

import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JComponent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;

//Start of Assign2Frame
public class Assign2Frame extends JFrame
	private		JTabbedPane tabbedPane;
	private		JPanel		panel1;
	private		JPanel		panel2;
	private		JPanel		panel3;
	private		JList		list;
	private		JScrollPane	scroll;
	public Assign2Frame()
		//Set the default window close operation
		this.setSize(new Dimension(500,350));
		this.setTitle("Geeky's DVD Database");
		JPanel contentPane;
        contentPane = (JPanel)this.getContentPane();
        BorderLayout borderLayout = new BorderLayout();
// Video Information        
        JTabbedPane tabbedPane = new JTabbedPane();
	//Create new panel
        panel1 = new JPanel();
        tabbedPane.addTab("Video Information", panel1);
	//Panel1 = GridBagLayout
        panel1.setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();
        c.gridx=0;	c.gridy=0;
        c.anchor = GridBagConstraints.WEST;
        panel1.add(new JLabel("Video Database System"), c);
    /*Panel1 = BorderLayout
    	panel1.setLayout(new BorderLayout());
    	panel1.add(new JLabel("<html><font size = 18><b>Video Database System</b></font></html>"), BorderLayout.NORTH);
	// JList in Panel1
			String[] titleDVD = {
						"Apt Pupil",
						"Pitch Black",
						"Phantom Menace",
						"Attack of the Clones",
						"Dark City",
						"The Lost Boys",
						"Mars Attacks",
						"Austin Powers",
						"The One",
		c.gridx=0; c.gridy=1;
		JList list = new JList(titleDVD);
		JScrollPane scroll = new JScrollPane(list);

		//list.setMinimumSize(new Dimension(100,100));


// Genre Filter
	//Create new panel
        panel2 = new JPanel();
        tabbedPane.addTab("Genre Filter", panel2);

// Statistics
	//Create new panel
        panel3 = new JPanel();
        tabbedPane.addTab("Statistics", panel3);

        setVisible (true);

Recommended Answers

All 7 Replies

A JScrollPane will not be in any way visible itself unless and until there is a need to display the scrollbars (or you've done something to explicitly show those always).

im new to i kinda dont get what you mean.

i creating a TabbedPane..for some 2nd Tab's JScrollPane works fine..but for the 1st tab's just doesnt show

got any idea what's wrong?

Add some swing constants if it's not showing up. I can't remember exactly what they are, but it's something like: JScrollPane.ALWAYS or something like that.

thx for the help...i will try to look for the code in the api...

My new question:
how to group JLabels together? and put the grouping to a GridBagLayout?

i uploaded a picture...
im trying to group "Movie Time" "Duration" "Time Now" and "Estimated Finish Time"

thx in advance

What do you mean by grouping labels?

ermm..what layout would you recommend? the picture i task is to create a similar one using swing..and im not sure how to do the "Movie Time" "Duration" "Time Now" and "Estimated Finish Time" part...

i used gridbaglayout but they("Movie Time" "Duration" "Time Now" and "Estimated Finish Time") .. move out of their assigned places...

Use nested layout managers.

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