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COMPLETE SOURCE CODE FOR : SetJPanelLayoutToGridBagLayout.java
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import javax.swing.*;
import java.awt.*;
public class SetJPanelLayoutToGridBagLayout extends JPanel
{
/**Note**
*When it say, "It will take 4 grid for it's width"
*it mean it will use 4 box in grid and it's direction is to right
*
*When it say, "It will take 4 grid for it's height"
*it mean it will use 4 box in grid and it's direction is to bottom
*/
//Create GridBigLayout object
GridBagLayout gbl=new GridBagLayout();
//Create GridBagConstraints object
GridBagConstraints gbc=new GridBagConstraints();
//Create a label using JLabel with text ( Name : )
JLabel label=new JLabel("Name :");
//Create a label using JLabel with text ( Age : )
JLabel label2=new JLabel("Age :");
//Create a text field using JTextField with numbers of column equal to 12
JTextField textField=new JTextField(12);
//Create a text field using JTextField with numbers of column equal to 3
JTextField textField2=new JTextField(3);
//Create a button with text ( OK )
JButton button=new JButton("OK");
//Create a button with text ( Cancel )
JButton button2=new JButton("Cancel");
//Create a box with vertical layout
Box box1=new Box(BoxLayout.Y_AXIS);
//Create a box with horizontal layout
Box box2=new Box(BoxLayout.X_AXIS);
//Create a box with horizontal layout
Box box3=new Box(BoxLayout.X_AXIS);
//Create a box with vertical layout
Box box4=new Box(BoxLayout.Y_AXIS);
//Create a window using JFrame with title ( Set JPanel layout using GridBagLayout )
JFrame frame=new JFrame("Set JPanel layout using GridBagLayout");
//Constructor
public SetJPanelLayoutToGridBagLayout()
{
//Make text in label allign to right
label.setHorizontalAlignment(SwingConstants.RIGHT);
label2.setHorizontalAlignment(SwingConstants.RIGHT);
//Set panel layout to GridBagLayout
setLayout(gbl);
//Field that will be use when display area is larger than component size.
//It mean when it has some space between component, component will
//enlarge to horizontal direction
gbc.fill=GridBagConstraints.HORIZONTAL;
/*
*Add label into panel with top left corner of the label at crossing between
*first horizontal and first vertical line.
*It will take 4 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(label,1,1,4,1);
/*
*Add label2 into panel with top left corner of the
*label at crossing between
*third horizontal and first vertical line.
*It will take 4 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(label2,3,1,4,1);
/*
*Add textField into panel with top left corner of the text field at
*crossing between first horizontal and sixth vertical line
*It will take 12 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(textField,1,6,12,1);
/*
*Add textField2 into panel with top left corner of the text field at
*crossing between third horizontal and sixth vertical line
*It will take 3 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(textField2,3,6,3,1);
/*
*Add button into panel with top left corner of the button at
*crossing between fifth horizontal and fifth vertical line
*It will take 5 grid for it's width
*It will take 2 grid for it's height
*/
addComponent(button,5,5,5,2);
/*
*Add button2 into panel with top left corner of the button at
*crossing between fifth horizontal and eleventh vertical line
*It will take 5 grid for it's width
*It will take 2 grid for it's height
*/
addComponent(button2,5,11,5,2);
/*
*Add a component that is invisible with 10 pixels width
*and 10 pixels height into box1
*/
box1.add(Box.createRigidArea(new Dimension(10,10)));
/*
*Add box1 into panel with top left corner of the box at
*crossing between first horizontal and fifth vertical line
*It will take 1 grid for it's width
*It will take 3 grid for it's height
*/
addComponent(box1,1,5,1,3);
/*
*Add a component that is invisible with 30 pixels width
*and 10 pixels height into box2
*/
box2.add(Box.createRigidArea(new Dimension(30,10)));
/*
*Add box2 into panel with top left corner of the box at
*crossing between second horizontal and first vertical line
*It will take 17 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(box2,2,1,17,1);
/*
*Add a component that is invisible with 30 pixels width
*and 10 pixels height into box3
*/
box3.add(Box.createRigidArea(new Dimension(30,10)));
/*
*Add box3 into panel with top left corner of the box at
*crossing between fourth horizontal and first vertical line
*It will take 17 grid for it's width
*It will take 1 grid for it's height
*/
addComponent(box3,4,1,17,1);
/*
*Add a component that is invisible with 10 pixels width
*and 10 pixels height into box4
*/
box4.add(Box.createRigidArea(new Dimension(10,10)));
/*
*Add box4 into panel with top left corner of the box at
*crossing between fifth horizontal and tenth vertical line
*It will take 1 grid for it's width
*It will take 2 grid for it's height
*/
addComponent(box4,5,10,1,2);
//Add panel into JFrame
frame.add(this);
//Set default close operation for JFrame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//SetJFrame size
frame.setSize(500,400);
//Make JFrame center on the screen
frame.setLocationRelativeTo(null);
//Disble JFrame from resizable
frame.setResizable(false);
frame.setVisible(true);
}
//Method addComponent
public void addComponent(Component component, int row, int column, int width, int height)
{
gbc.gridx=column;
gbc.gridy=row;
gbc.gridwidth=width;
gbc.gridheight=height;
gbl.setConstraints(component,gbc);
add(component);
}
//Main method
public static void main(String[]args)
{
SetJPanelLayoutToGridBagLayout sjpltgbl=new SetJPanelLayoutToGridBagLayout();
}
}
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JUST COMPILE AND EXECUTE IT
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