Multiple components in a gridbag layout cell

Is it possible to have two components in one cell of a grid bag layout? Say, a textfield box and some text to its immediate right? If so, can someone post an example? Thanksmuch.

Put the textfield and a label with the text in a panel. Then add that panel to your gridbag cell.

Similar Messages

How to remove multiple components border inside a single table column cell

Hi,
I'm adding multiple components to a table cell. To provide a good layout I'm using the following component hierarchy in a table column - table-->groupPanel--> gridPanel-->staticText Components 1 ..2 ..3. Now when I do preview in browser or run the app, the table shows up fine, but textComponent s(1,2,3) in the column are each surrounded by a border (which is the width of gridPanel border). Is there a way to get rid of this border?
This only occurs when you add multiple components in table cell, under gridpanel layout component.
I've tried searching for a way to remove the grid pane layout component border but couldn't find any info. Used style class border setting to not set but that doesn't help either. I checked forums, tutorial, learning sections etc., but no success. Any help or direction is appreciated..
Thanks
-Vinod

Hi ,
Can you please post the query ..what u have tried ...
SQL> select sub from coa1;
SUB
XY
XY
XY
XY
XY
HXY
HXY
HXY
8 rows selected.
SQL> select obj from coa1;
OBJ
AM
AM
AM
AK
AK
AK
ATK
ATK
8 rows selected.
SQL> SELECT OBJ FROM COA1
2 UNION ALL
3 SELECT SUB FROM COA1;
OBJ
AM
AM
AM
AK
AK
AK
ATK
ATK
XY
XY
XY
OBJ
XY
XY
HXY
HXY
HXY
16 rows selected.
SQL> insert into coa2 (obj)
2 (
3 SELECT OBJ FROM COA1
4 UNION ALL
5 SELECT SUB FROM COA1
6 );
16 rows created.
SQL> select * from coa2;
OBJ SUB MCU DOC F
AM
AM
AM
AK
AK
AK
ATK
ATK
XY
XY
XY
OBJ SUB MCU DOC F
XY
XY
HXY
HXY
HXY
16 rows selected.
SQL>
i tried the same it worked fine .....
so u can combine select and insert statements .. you can get the required result.....!
Thanks
Ananda
Edited by: Ananda on Feb 2, 2009 7:38 PM
Edited by: Ananda on Feb 2, 2009 7:52 PM

Gridbag layout in jpanel?

Hi, all
I just start to use gridbag layout in my application. It looks very like table in html to me. While writing html table, I can use 'border=1' to determine width and height for each cell. Is it possible to reveal border of each grid in jpanel?
Thanks,

You can't reveal the border of the cells being used by GridBagLayout.
You could add a LineBorder to each component but this won't show you the cell border, it will show you the component border. There could be padding between the component and the cell boundary.
However, you should try to avoid thinking of GridBagLayout as being like an HTML table; this usually causes confusion. There's probably a number of topics in this forum about wanting to get HTML table behaviour with a GridBagLayout.
Here's one for a start:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=251815

Urgent help needed!! Layout table and Draw layout cell dissapeared.

I need some urgent help. I'm using CS3 but for a while my
Layout Table and Draw Layout Cell icons appear greyed and can't use
them at all. Is there any kind soul out there who knows how to fix
this? I'm going nuts trying all the possible options but none seem
to work.
Help please!!!!!!

> How would you about designing a page without using html?
You don't. But I don't recall suggesting that you not use
HTML. I just
suggested that you use best-practice HTML, no? Or maybe you
meant to ask
how you would go about building your site without learning
HTML? In that
case, I think you are outta luck. Using DW without knowing
HTML is a very
punishing experience, I'm afraid.
> PS: A virtual box of 12 bottles of Moet Chandon is
already on your way!!
I'd prefer Cristal, please.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
==================
"Untersberg" <[email protected]> wrote in
message
news:g4tj9a$m5o$[email protected]..
> Ahhhhhh!!!!! They came up!!!! They came up again!!
> I was on standard mode. Now going back to your
suggestion, which I really
> appreciate. How would you about designing a page without
using html? I'm
> just
> redesigning my website at the moment and need it to get
going urgently,
> hence
> the reluctance to start learning HTML at the moment.
I'll do after but I
> need
> to get this up and running fairly quickly.
>
> Cheers.
>
> PS: A virtual box of 12 bottles of Moet Chandon is
already on your way!!
>

How to allow multiple values in a single blank cell in WebI report

Hi
I am working in BO XIR2. I have a scenario as follows.
In a single cell (blank cell from template) i need to display multiple contact persons. When I drag the contact person name into the blank cell, I am getting an error: MULTIVALUE). Please let me know how to use a function so that I can show two or three contact person names in a single blank cell.
I tried to use Replace and Char function as follows to bring Carriage Return functionality to the cell.
Replace([Contact Person]; ";" ; Char(13)) but this did not work.
Thanks in Advance.

BOUser11:
I know this thread has been answered. I recently came across a scenario where I happen to populate multiple values in a single blank cell(from templates). But the only catch being that if user enters multiple values for a prompt you can show them in a single cell eg: =UserResponse("Enter value(s) for Branch:"). would be the formula for the blank cell. Afetr the user selects three values say A, B,C, webi puts it in the format of A;B;C. in a single cell.
In your case try giving that as a prompt to the user or answer that multi prompt some how and when u use the above formula it should suffice your requirement.
Let me know if you have tried.
Thanks,
karthik

Use of multiple components in ABAP WEB DYNPRO

Hi,
Am new to abap web dynpro and I just want to know whether we can use multiple components for an application in web dynpro.
Thanks ,
Dhaya.G
Edited by: Dhayalinie Ganesh on Feb 22, 2012 12:06 PM

Hi,
depending requirement of application we can use multiple components.
for example if we want to display table data into alv grid for that we can use the existing(standard component) ie: SALV_WD_TABLE .Like such a way we can use the components as per our requirements.
For importing components:
--> Go to properties tab of view of your web dynpro application
--> There you can find one button create controller usage ,click on it then import the components
Thanks&Regards
Sreenivas Pachva
Edited by: sreenivas.p on Feb 22, 2012 1:11 PM

JTextArea & Gridbag layout - max size of control

Hello everyone:
I am currnetly using a JTextArea with the Gridbag layout. I want to limit the size of the JTextArea. Found an article when I did a "search" that says the size is actually controlled by the layout manager. Have tried setMaximunSize(), no luck. It appears the layout manager ignores this. The problem I am having is that I can set the size I want, however if the user types a lot of text in to the JTextArea, the control expands and over and "pushes" the controls below it down. How do I keep the layout manager from allowing this to happen?
Thanks in advance, Bart

Hello everyone:
I am currnetly using a JTextArea with the Gridbag
layout. I want to limit the size of the JTextArea.
Found an article when I did a "search" that says the
size is actually controlled by the layout manager.
Have tried setMaximunSize(), no luck. It appears the
layout manager ignores this. The problem I am having
is that I can set the size I want, however if the user
types a lot of text in to the JTextArea, the control
expands and over and "pushes" the controls below it
down. How do I keep the layout manager from allowing
this to happen?
Thanks in advance, Bart Do you wish to allow the user to enter as much text as he or she likes? If so, wrap the JTextArea in a JScrollPane and set the preferred size of the JScrollPange to the area you'd like the pane to consume. It'll listen, no doubt. :)

Gridbag Layout In Flex - Looking for canvasgrid

Hello,
I found a posting about a layout mechanism call canvasgrid,
based on the gridbag layout principle. It is documented at
Mannu's Blog.
It is a very effective layout, but the download is broken, and so
If anyone happens to have his open source reference The source
filename is canvasgrid_v0.3.1.zip, and it was originally located
at:
http://tasmania.globat.com/~mannu.info/flex/canvasgrid_v0.3.1.zip
If anyone happens to be a code squirel, like myself, and has
a copy of this, that would be great. I will make it a part of the
flexlib, just because it's so usefull.
Thaks

Hi, You can try this:
package {
import flash.display.MovieClip;
import mx.core.SpriteAsset;
import mx.core.MovieClipAsset;
public class GameSymbols extends MovieClip {
[Embed(source='gameSymbols.swf', symbol='Coffee')]
private var CoffeeClass:Class;
//CoffeeClass represents the embedded symbol.
public function GameSymbols() {
//Flex defines CoffeClass as a reference to a subclass of
//SpriteAsset class - for single-frame SWF files or
//MovieClipAsset class - for multiframe SWF files.
var myCoffee:SpriteAsset = new CoffeeClass() as SpriteAsset;
//var myCoffee:MovieClipAsset = new CoffeeClass() as
MovieClipAsset;
//You can manipulate the embedded Symbol by using the
methods
//and properties of the SpriteAsset or MovieClipAsset class.
myCoffee.setActualSize(50, 50);
myCoffee.x = 10;
myCoffee.y = 10;
myCoffee.alpha = 100;
myCoffee.visible = true;
addChild(myCoffee);
Luk.

Possible Problem/Bug In GridBag Layout ????

I've done hundreds of Gridbag layouts in the past 2 years and just noticed this weird little behavior today.....
Basically what I'm trying to do is arrange panels like this.....
+--------+--------+--------+
|        |        |        |
|   A    |    B   |   C    |
|        |        |        |
+--------+----+---+--------+
|             |            |
|     D       |      E     |
|             |            |
+-------------+------------+The obvious thing to do is to
o make the gridwidths of
B, D, E = 2
A, C = 1
D and E should each share one unit of
B's 2 width.
Tried it in my code with my real UI and it didn't work, so then I tested it
out using a Gridbag tool where you can set parameters on the fly quickly and
surely enough it did not work there either.
The GridBagLayout is refusing to split B into 2 portions for the 2nd row
to use in an unalligned fashion. I either get
+--------+--------+--------+
|        |        |        |
|   A    |    B   |   C    |
|        |        |        |
+--------+----+---+--------+
|        |                 |
|     D |           E     |
|        |                 |
+--------+-----------------+ or
+--------+--------+--------+
|        |        |        |
|   A    |    B   |   C    |
|        |        |        |
+--------+----+---+--------+
|                 |        |
|     D           | E     |
|                 |        |
+--------+--------+--------+ depending on the order in which I add my panels to the layout.
even though my gridx, gridy and widths and heights are properly set for
obtaining the result I want.
Can someone confirm that this is a bug in the GridBagLayout or share the trick for
getting around this?

Thanks for the reply - I can set the weights however
I wish and I never see box D extending even one pixel
into the A-B boundary.This does what you say...
import java.awt.*;
import javax.swing.*;
public class TestFrame extends JFrame {
public TestFrame() {
    JPanel panel = new JPanel(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.fill = GridBagConstraints.BOTH;
    gbc.weighty = 0.5;
    panel.add(new JButton("A"), gbc);
    gbc.gridx = 1;
    gbc.gridwidth = 2;
    panel.add(new JButton("B"), gbc);
    gbc.gridx = 3;
    gbc.gridwidth = 1;
    panel.add(new JButton("C"), gbc);
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.gridwidth = 2;
    gbc.weightx = 0.5;
    panel.add(new JButton("D"), gbc);
    gbc.gridx = 2;
    panel.add(new JButton("E"), gbc);
    getContentPane().add(panel);
    setSize(400, 300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
public static void main(String[] args) {
    TestFrame frame = new TestFrame();
    frame.setVisible(true);
}But i'm sure it's not a satisfactory layout because button A does not want to resize horizontally at all. But of course, a mix of grid layouts does the trick:
import java.awt.*;
import javax.swing.*;
public class TestFrame extends JFrame {
public TestFrame() {
    JPanel panel = new JPanel(new GridLayout(2, 1));
    JPanel top = new JPanel(new GridLayout(1, 3));
    top.add(new JButton("A"));
    top.add(new JButton("B"));
    top.add(new JButton("C"));
    panel.add(top);
    JPanel buttom = new JPanel(new GridLayout(1, 2));
    buttom.add(new JButton("D"));
    buttom.add(new JButton("E"));
    panel.add(buttom);
    getContentPane().add(panel);
    setSize(400, 300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
public static void main(String[] args) {
    TestFrame frame = new TestFrame();
    frame.setVisible(true);
}

JPanel Positiong with Gridbag Layout Problem

Hi,
I'm desingning an UI in which I made a JFrame and set it Layout as gridBag layout. Now I have added Three JPanel in this JFrame.
The problem is that All the three JPanels are shown in center While I want to palce them in top left corner.
I have done this through NetBeans 4.0 in the layout coustomize option I've set them in first in the left top most, second in below of the first and so on but when I run the application The JPanel are shown in the center in this Particular position i.e first at the top in center second below to the fist and so on.
Kindly solve my this problem.
Regards,
Danish Kamran.

To get better help sooner, post a SSCCE that clearly demonstrates your problem.
Use code tags to post codes -- [code]CODE[/code] will display asCODEOr click the CODE button and paste your code between the {code} tags that appear.
db

Gridbag layout problem on a tabbedpane

I am not sure whether we can do this or not but, I am trying to have a gridbag layout on a TabbedPane object.
I have a JFrame on which I am adding a TabbedPane object called "t" and on this TabbedPane I am adding a tab called "Insert" which is an object of class "Insert Data". Then, I add the TabbedPane t on the Container cp, which is inside the JFrame.
In the InsertData Class (a JPanel), I need to have the gridbag layout. With this gridbag layout object, I am trying to place different objects like buttons, at various places, on this JPanel. But nothing moves on this panel.
In short, please let me know how can I have a gridbag layout on a Tabbedpane.
The Main Class is as follows:
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Main extends JFrame implements ActionListener, ChangeListener{
     Main(){
               setPreferredSize(new Dimension(1200,600));
               Container cp = getContentPane();
               JTabbedPane t = new JTabbedPane();
               // insert
               InsertData insertOptions = new InsertData();
               t.addTab("Insert",insertOptions);
               cp.add(t);
               this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               pack();
               setVisible(true);
          @Override
          public void actionPerformed(ActionEvent arg0) {
               // TODO Auto-generated method stub
          @Override
          public void stateChanged(ChangeEvent arg0) {
               // TODO Auto-generated method stub
          public static void main(String args[]){
               new Main();
     }The InsertDataClass is:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class InsertData extends JPanel{
     InsertData(){
          setPreferredSize(new Dimension(1200,600));
          setBackground(Color.blue);
          //setLayout(new GridBagLayout());
          GridBagLayout gb = new GridBagLayout();
          setLayout(gb);
          GridBagConstraints c = new GridBagConstraints();
          //c.insets = new Insets(2, 2, 2, 2);
          //JPanel p1= new JPanel();
          //p1.setPreferredSize(new Dimension(200,200));
          JButton b1 = new JButton("here i am!!!");
          //p1.add(b1);
          //c.fill = GridBagConstraints.HORIZONTAL;
          //c.anchor = GridBagConstraints.WEST;
          c.gridx=0;
          c.gridy=1;
          add(b1,c);
}

how can I have a gridbag layout on a Tabbedpane.Huh? You post an example with just one JButton and no weightx / weighty set and you expect others here to be able to see a problem with your layout?
Also, there's needless, unused code that is just clutter -- like the unimplemented ActionListener and ChaneListener. Recommended reading: [SSCCE (Short, Self Contained, Compilable and Executable, Example Program)|http://mindprod.com/jgloss/sscce.html].
Finally, I don't see any need whatsoever to extend JFrame and JPanel as you are not introducing any new behavior of either. Always favor composition over inheritance.
I plugged in some code I had used for someone else's GridBagLayout problems and this will show you that there's no difference in using GridBagLayout in a tabbed pane component or anywhere else.import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.*;
public class GridBagInTabbedPane {
public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        new GridBagInTabbedPane().makeUI();
public void makeUI() {
    Font fontButton = new Font("Arial", Font.BOLD, 10);
    Font fontLabel = new Font("Arial", Font.BOLD, 15);
    JLabel labelEnter = new JLabel("Enter sentences in the text area ");
    labelEnter.setFont(fontLabel);
    JTextArea textArea = new JTextArea();
    textArea.setPreferredSize(new Dimension(630, 280));
    JScrollPane scrollPane = new JScrollPane(textArea);
    scrollPane.setMinimumSize(new Dimension(630, 280));
    JLabel labelDuplicates = new JLabel("Duplicates will appear here");
    labelDuplicates.setMinimumSize(new Dimension(650, 30));
    labelDuplicates.setFont(fontLabel);
    JButton buttonDisplay = new JButton("Display Map");
    buttonDisplay.setFont(fontButton);
    JButton buttonClear = new JButton("Clear");
    buttonClear.setFont(fontButton);
    JPanel panel = new JPanel(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.gridwidth = 2;
    gbc.fill = GridBagConstraints.NONE;
    gbc.anchor = GridBagConstraints.CENTER;
    gbc.insets = new Insets(5, 5, 5, 5);
    gbc.weightx = 0.5;
    panel.add(labelEnter, gbc);
    gbc.gridy = 1;
    gbc.fill = GridBagConstraints.BOTH;
    gbc.weighty = 0.5;
    panel.add(scrollPane, gbc);
    gbc.gridy = 2;
    gbc.fill = GridBagConstraints.NONE;
    gbc.weighty = 0.0;
    panel.add(labelDuplicates, gbc);
    gbc.gridy = 3;
    gbc.gridwidth = 1;
    gbc.anchor = GridBagConstraints.EAST;
    panel.add(buttonDisplay, gbc);
    gbc.gridx = 1;
    gbc.anchor = GridBagConstraints.WEST;
    panel.add(buttonClear, gbc);
    JTabbedPane tabbedPane = new JTabbedPane();
    tabbedPane.add(panel);
    JFrame frame = new JFrame();
    frame.add(tabbedPane);
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
}db

Drag and Drop of multiple components at once

Hi everybody,
I need to select and drag multiple components (Eg. JLabels) at once, it is quite simple to manage just one drag at a time but how can be managed a multiple drag?
I mean something like Windows files selection mechanism : using Ctrl + Left mouse click to select the components and then start dragging them all to the drop target.
Beneath the code I'm using for testing , clicking and dragging each JLabel to JTextField just cause the copy of JLabel text to the JTextField contents.
In the sample a left click on each displayed label sets a border just to identify the selected status of the labels to drag but there's no implementation of the drop mechanism that should copy all the selected JLabels text to the drop target (the JTextField).
import java.awt.Dimension;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.HashMap;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.TransferHandler;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
public class SelectableJLabel extends JPanel {
MouseListener listener = new DragMouseAdapter();
public Border getBorder(boolean getSelectedBorder) {
    Border outsideBorder = BorderFactory.createEmptyBorder(2,2,2,2);
    Border insideBorder = BorderFactory.createEmptyBorder(2,2,2,2);
    if (getSelectedBorder)
      insideBorder = BorderFactory.createEtchedBorder();
    return BorderFactory.createCompoundBorder(outsideBorder, insideBorder);
private class DragMouseAdapter extends MouseAdapter {
    public void mousePressed(MouseEvent e) {
      System.out.println("Press!");
      JComponent c = (JComponent) e.getSource();
      JLabel lbl = (JLabel)c;
      if (lbl.getBorder()==null || ((CompoundBorder)lbl.getBorder()).getInsideBorder() instanceof EmptyBorder) {
        lbl.setBorder(getBorder(true));
        TransferHandler handler = c.getTransferHandler();
        handler.exportAsDrag(c, e, TransferHandler.COPY);
      } else
        lbl.setBorder(getBorder(false));
    /* (non-Javadoc)
     * @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
    @Override
    public void mouseClicked(MouseEvent e) {
public JLabel getSelectableLabel() {
    JLabel selectableJLabel = new JLabel("You can't select me");
    selectableJLabel.setBorder(getBorder(false));
    selectableJLabel.setTransferHandler(new TransferHandler("text"));
    selectableJLabel.addMouseListener(listener);
    return selectableJLabel;
public SelectableJLabel() {
    // a regular JLabel
    add(getSelectableLabel());
    add(getSelectableLabel());
    add(getSelectableLabel());
    // a look-alike JLabel
    JTextField f = new JTextField("You can select me........................");
    f.setDragEnabled(true);
    //f.setEditable(false);
    f.setBorder(null);
    f.setForeground(UIManager.getColor("Label.foreground"));
    f.setFont(UIManager.getFont("Label.font"));
    add(f);
public Dimension getPreferredSize() {
    return new Dimension(100, 100);
public static void main(String s[]) {
    JFrame frame = new JFrame("SelectableJLabel");
    SelectableJLabel panel = new SelectableJLabel();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(panel, "Center");
    frame.setSize(panel.getPreferredSize());
    frame.setVisible(true);
}Tnx in advance for HELP
Massimo
Edited by: JKut on May 2, 2010 10:48 AM

For multiple selections I recommend to use "JList". The "ListTransferHandler" provided in the "DropDemo" sample code supports multiple selections: [http://java.sun.com/docs/books/tutorial/uiswing/dnd/dropmodedemo.html]. To enable MULTIPLE_INTERVAL_SELECTION, simply remove the following statement in the "DropDemo" class:
        list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);

Logging same NC code for multiple components

Hi,
When logging NC codes in SAP ME 6.0 it is possible to log the same NC Code (defect) against many ref-des for
multiple components.
However when logging a secondary code (Action) for the previous primary NC Code all the choosen ref-des and components
don't get copied..
Is this how it is supposed to work or is there a setting somewhere so that all ref-des and components gets copied?
Best Regards,
Johan Nordebrink

Hi Johan,
The matter of your question is related to Ref Des List re-desinged for 6.0.
Overall situation looks like a design gap because:
- no explicit statement in the documentation describing the case of copying multiple Ref Des'es;
- the case of 1-to-1 relation between Component and Ref Des is mentioned in the context of auto-population of these feilds on tabbing out if one of the field is populated;
- the case of single Ref Des is widely referenced in the context of VTR that is a new feature in 6.0.
So, if you need this to be reviewed by Product Mgmt (maybe they agreed to identify this as a bug), as usually you should either ask your SAP ME Consulting representative or submit a support ticket (depending on whom you pefer to talk with ).
Regards,
Sergiy

Gridbag layout continues to confound me...

I am having problems with the gridx and gridy constraints when trying to use gridbag layout. They seem to have no effect when I use them. The button always appears in the top left of the panel. Other constraints seem to work as expected.
For example: c2.fill = GridBagConstraints.BOTH; will fill up the entire panel with my button.
Any advice on what I am doing wrong this time?
Thanks
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import javax.swing.JFrame;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.Color;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.text.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
public class Question
     public JPanel test()
          JPanel testPanel = new JPanel(new GridBagLayout());
          GridBagConstraints c2 = new GridBagConstraints();
          c2.insets = new Insets(5,5,5,5);
          c2.weightx = 1.0;
          c2.weighty = 1.0;
          c2.anchor = c2.NORTHWEST;
          JButton redButton = new JButton("Button");
          c2.gridx = 2;
          c2.gridy = 2;
          //c2.fill = GridBagConstraints.BOTH;//this works as expected
          testPanel.add(redButton,c2);
          return testPanel;
     public Container createContentPane()
          //Create the content-pane-to-be.
          JPanel contentPane = new JPanel(new BorderLayout());
          contentPane.setOpaque(true);
          return contentPane;
     private static void createAndShowGUI()
          //Create and set up the window.
          JFrame frame = new JFrame("question");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          //Create and set up the content pane.
          Question demo = new Question();
          frame.setContentPane(demo.createContentPane());
          frame.add(demo.test());
          //Display the window.
          frame.setSize(400, 400);
          frame.setVisible(true);
    public static void main(String[] args)
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable()
            public void run()
                createAndShowGUI();
    }//end main
}//end Question

GridBagLayout keeps zero width/height grid for non-existant component for the grid.
You could override this behavior by using GBL's four arrays as shown below.
However, in order to get the desired layout effect, using other layout manager, e.g. BoxLayout and/or Box, is much easier and flexible as camickr, a GBL hater, suggests.
Anyway, however, before using a complex API class as GBL, you shoud read the documentation closely.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Question{
// you may adjust these values for your taste
static final int rowHeight    = 100;
static final int colWidth     = 100;
static final double rowWeight = 1.0;
static final double colWeight = 1.0;
public JPanel test(){
    GridBagLayout gb = new GridBagLayout();
    gb = keepAllRowsAndColumns(gb, 3, 3);
    JPanel testPanel = new JPanel(gb);
    GridBagConstraints c2 = new GridBagConstraints();
    c2.insets = new Insets(5,5,5,5);
    c2.weightx = 1.0;
    c2.weighty = 1.0;
    c2.anchor = c2.NORTHWEST;
    JButton redButton = new JButton("Button");
    c2.gridx = 2;
    c2.gridy = 2;
    // c2.fill = GridBagConstraints.BOTH;//this works as expected
    testPanel.add(redButton,c2);
    return testPanel;
GridBagLayout keepAllRowsAndColumns(GridBagLayout g, int rn, int cn){
    g.rowHeights = new int[rn];
    g.columnWidths = new int[cn];
    g.rowWeights = new double[rn];
    g.columnWeights = new double[cn];
    for (int i = 0; i < rn; ++i){
      g.rowHeights[i] = rowHeight;
      g.rowWeights[i] = rowWeight;
    for (int i = 0; i < cn; ++i){
      g.columnWidths[i] = colWidth;
      g.columnWeights[i] = colWeight;
    return g;
private static void createAndShowGUI(){
    JFrame frame = new JFrame("question");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Question demo = new Question();
    frame.getContentPane().add(demo.test(), BorderLayout.CENTER);
    frame.setSize(400, 400);
    frame.setVisible(true);
public static void main(String[] args){
    javax.swing.SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        createAndShowGUI();
}

Gridbag Layout and Tabbed Panes

First off, I'm pretty new to Java, I started it around February as a school course, and it's been a pretty smooth ride. Recently, we started to code GUI, trying out different layouts and whatnot. I'm having a little trouble in this portion as our teacher did not really delve into it very much. My question concerns the GridBag layout within a panel of a tab (sorry if this is unclear, I'm talking about something that looks like this: http://www.codeproject.com/useritems/tabcontrol.asp). I don't know how to use GridBag constraints within a panel. What I used to do with GridBag was simply use some code that looked like (forgive me, this might not be very accurate): AddComponent button1(#, #, #, #) and define what each of those numbers meant later (first would be row, second would be column, third would be width, fourth would be height, for example). But now, with the tabs, each button, label, or any other control would be declared, then I would place a bunch of direct constraints after, like this:
JButton button1 = new JButton("1");
constraints.gridx = 0;
constraints.gridy = 0;
constraints.gridwidth = 1;
constraints.gridheight = 1;then add them into the panel like this:
panel1.add(button1, constraints);However, I have tried making the buttons on top of each other, and other patterns, but it would just place the buttons next to each other within the panel. How do I make it so that the constraints work? Or rather, if they do work, what kinda things might mess it up? I think the problem is that I dunno how to make the constraints specific to that one button.
Also, how do I make each panel a certain size instead of each panel being as small as possible to contain anything within it.
I'm sorry if this all sounds very vague, I'd be more than happy to give you any needed information. Also, I'm not asking any of you to do my homework, I just need a little clarification or an example. Just in case, here's the code I'm working on: http://hashasp.mine.nu/paster/?1376. Be aware that there are no comments or anything, it's very bare. Also, the form may be a bit messy because I'm pretty much reusing code that was given to me, just manipulating it in a different way. Thanks a lot in advanced for your time in reading this.

* GridBag_Demo.java
import java.awt.*;
import javax.swing.*;
public class GridBag_Demo extends JFrame {
    public GridBag_Demo() {
        setTitle("GridBag Demo");
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setSize(400,300);
        setLocationRelativeTo(null);
        GridBagConstraints gridBagConstraints;
        jTabbedPane1 = new JTabbedPane();
        jPanel1 = new JPanel();
        jButton1 = new JButton();
        jButton2 = new JButton();
        jButton3 = new JButton();
        jPanel1.setLayout(new GridBagLayout());
        jButton1.setText("jButton1");
        gridBagConstraints = new GridBagConstraints();
        gridBagConstraints.insets = new Insets(2,2,2,2);
        jPanel1.add(jButton1, gridBagConstraints);
        jButton2.setText("jButton2");
        gridBagConstraints.gridy = 1;
        jPanel1.add(jButton2, gridBagConstraints);
        jButton3.setText("jButton3");
        gridBagConstraints.gridy = 2;
        jPanel1.add(jButton3, gridBagConstraints);
        jTabbedPane1.addTab("tab1", jPanel1);
        getContentPane().add(jTabbedPane1, BorderLayout.CENTER);
    public static void main(String args[]) {
        new GridBag_Demo().setVisible(true);
    private JButton jButton1;
    private JButton jButton2;
    private JButton jButton3;
    private JPanel jPanel1;
    private JTabbedPane jTabbedPane1;
}

Multiple components in a gridbag layout cell

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