asked on

button fills whole frame :(

I am just trying to add a button to a frame... even when I setting the size and location for button, it is still occupying the whole frame. :( I mean it appears as the size of frame.

:annoyed

ASKER CERTIFIED SOLUTION

ksivananth

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer

ksivananth

here is an example,

import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

/**
* TYPE DESCRIPTION HERE
*
*/
public class TestGridbaglayout{

      private JPanel buildComponent(){
            JPanel pnlMain = new JPanel( new GridBagLayout() ) ;

            //30%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 0, 1, 1, 0.3, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //70%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 1, 0, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //None - only component display area
            pnlMain.add( new JButton( "Button 3" ), new GridBagConstraints( 2, 0, 1, 1, 0.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );

            //50%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 1, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //50%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 1, 1, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //None - only component display area
            pnlMain.add( new JButton( "Button 3" ), new GridBagConstraints( 2, 1, 1, 1, 0.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );


            //~35%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 2, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //~30%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 1, 2, 1, 1, 0.3, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //~35%
            pnlMain.add( new JButton( "Button 3" ), new GridBagConstraints( 2, 2, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );

            //~35%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 3, 1, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //~30%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 1, 3, 2, 1, 0.3, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );


            //~35%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 4, 2, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //~30%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 2, 4, 1, 1, 0.3, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets( 0, 0, 0, 0 ), 0, 0 ) );

            //~35%
            pnlMain.add( new JButton( "Button 1" ), new GridBagConstraints( 0, 5, 2, 1, 1.0, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets( 0, 0, 0, 0 ), 0, 0 ) );
            //~30%
            pnlMain.add( new JButton( "Button 2" ), new GridBagConstraints( 2, 5, 1, 1, 0.3, 0.0,
            GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets( 0, 0, 0, 0 ), 0, 0 ) );

            return pnlMain ;
      }

      /**
       * @param args
       */
      public static void main( String[] args ){
            TestGridbaglayout test = new TestGridbaglayout() ;
JFrame frame = new JFrame("TestGridbaglayout");

frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});

frame.getContentPane().add( test.buildComponent(), BorderLayout.CENTER);
frame.setSize( 400, 400 ) ;
// frame.pack();
frame.setVisible(true);
      }

}

SOLUTION

Mick Barry

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer

SOLUTION

Valeri

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer

Valeri

@objects : sorry! :-) exactly in the same time!
btw, adding button is not enought. setBounds must be invoked too to position the component

SOLUTION

CEHJ

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer

ksivananth

null layout mostly lead into problems, should avoid unless and otherwise needed! here null layout should be avoided!

hipal

ASKER

Hi all thanks a lot for all the responses for my silly mistake.

But, I need do to place different buttons at different places on screen .. so I think I have no other option but to use null layout.

ksivananth

>>so I think I have no other option but to use null layout

thats a bad idea as I said earlear, check with the various layout managers and choose the best fit for you!

hipal

ASKER

Can you please elaborate .. what kind of issues it can lead to ?

ksivananth

when you resize the window, componenets won't be resized/re-aligned!

hipal

ASKER

But my app will never cause resizing the window .. I am even using it as undecorated .. so no option to resize..

But still there are no work arounds ? so that they get resized on resizing window..

and I still confused, I mean placing components are desired places should be such a common thing ..how can we work with pre defined layouts everytime.

I need button to be on border of panel and also want few here and there .. can you please suggest something.. as I will really like to use layouts .. because it is better practice like you all experts suggested

CEHJ

>>and I still confused, I mean placing components are desired places should be such a common thing ..how can we work with pre defined layouts everytime.

Layout managers lay out components in a predictable way and allow resizing