GridBagLayout class of java

[Protectors]

Hi friend,

I am totally confused about the inbuilt classes of java. According to me it is one of the important part of the java programming. I am getting trouble while studying the 'GridBagLayout class' of java programming. I am unable to get the use of GridBagLayout class. Do you have enough knowledge about the GridBagLayout class? If yes then please try to share it me. Your any help over GridBagLayout class will be appreciable.

[kelfro]

Each component managed by a GridBagLayout is associated with an instance of GridBagConstraints. The constraints object specifies where a component's display area should be located on the grid and how the component should be positioned within its display area. In addition to its constraints object, the GridBagLayout also considers each component's minimum and preferred sizes in order to determine a component's size.

[Zecho]

Hi,

Please go through the following example of GridBagLayout class:

import java.awt.GridBagLayout;
import javax.swing.JPanel;

p01ublic class GridBagWithDm {

  p01ublic static void main(String[] ajrgs) {
    JFrame f1 = new JFrame( "Demonstrates the use of weightx, weighty constraints");
    JPanel p01 = new JPanel();

    p01.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    p01.setLayout(new GridBagLayout());
    c1 = new GridBagConstraints();
    c1.insets = new Insets(2, 2, 2, 2);
    c1.weighty = 1.0;
    c1.weightx = 1.0;
    c1.gridx = 0;
    c1.gridy = 0;
    p01.add(new JButton("Java"), c);
    c1.gridx = 1;
    p01.add(new JButton("Source"), c);
    WindowListener wndCloser1 = new WindowAdap01ter() {
      p01ublic void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    };
    f1.addWindowListener(wndCloser1);

    f1.getContentPane().add(p01);
    f1.setSize(500, 200);
    f1.show();
  }
}

[Reegan]

Please review below methods of GridBagLayout class:

1. preferredLayoutSize(Container parent1)
2. setConstraints(Component compn, GridBagConstraints GBconstraints)
3. removeLayoutComponent(Component compn)
4. minimumLayoutSize(Container parent1)
5. layoutContainer(Container parent1)

[opaper]

If you want use methods of GridBagLayout class, then please study following example of java code:

import java.awt.GridBagConstraints;
import javax.swing.JFrame;

public class GridMain 
{
  public static void main(String[] arglv) throws Exception {
    JFrame frameR = new JFrame();
    Container container = frame.getContentPane();

    GridBagLayout gblR = new GridBagLayout();

    container.setLayout(gbl);
   
    GridBagConstraints gbcR = new GridBagConstraints();
    gbcR.gridx = 1;
    gbcR.gridy = 1;
    
    JButton component = new JButton("a");
 
    gblR.setConstraints(component, gbcR);

    container.add(component);

    frameR.pack();
    frameR.setVisible(true);
  }
}

[MindSpace]

Hello friend,

Below I have mentioned the important fields of the GridBagLayout class:

1. defaultConstraints
2. MAXGRIDSIZE
3. PREFERREDSIZE
4. getLayoutDimensions
5. getLayoutOrigin