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First Posted 31 Jan 2003
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Grid Layouts

By | 31 Jan 2003 | Article
An introductory article about how to use the 'Grid' Layout in Java.

Introduction

This article will demonstrate how to use the 'Grid' Layout in Java. The Grid Layout Managers assigns components to a grid of cells. Each cell in the grid is the same size and the components grow to fill the available area. This Layout Manager is good for laying out containers that look like grids; e.g., a calculator, a calendar page or a battleship game.

The following constructors apply to the Grid Layout:
GridLayout(int rows, int cols, int hgap, int vgap)
GridLayout(int rows, int cols)
The rows is the number of rows in the grid and the cols is the number of columns. At least one of these must be non-zero. A zero means as many rows or columns as necessary. The hgap is the horizontal gap between components and defaults to 0 pixels. The vgap is the vertical gap between components and also defaults to 0 pixels. Example Code:

// Imports
import java.awt.*;
import java.applet.Applet;

public class Grid extends Applet{ 
    // Adding Labels
    Label one   = new Label("Team Name");
    Label two   = new Label("Stadium");
    Label three = new Label("Nick Name");
    Label four  = new Label("Grimsby Town");
    Label five  = new Label("Blundell Park");
    Label six   = new Label("Mariners");
    Label seven = new Label("Kettering Town");
    Label eight = new Label("Rockignham Road");
    Label nine  = new Label("Poppies");
    Label ten   = new Label("Boston United");
    Label eleven= new Label("York Street");
    Label twelve= new Label("Pilgrims");

//The Grid Layout uses the simplest form of the add method which requires only a reference to a component.

    public void init(){

        setLayout(new GridLayout(4,3));
        add(one); one.setBackground(Color.red);
        add(two); two.setBackground(Color.red);
        add(three); three.setBackground(Color.red);
        add(four); four.setBackground(Color.green);
        add(five); five.setBackground(Color.green);
        add(six); six.setBackground(Color.green);
        add(seven); seven.setBackground(Color.blue);
        add(eight); eight.setBackground(Color.blue);
        add(nine); nine.setBackground(Color.blue);
        add(ten); ten.setBackground(Color.orange);
        add(eleven); eleven.setBackground(Color.orange);
        add(twelve); twelve.setBackground(Color.orange);
    }
}

License

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About the Author

co7eguy



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GeneralGood Pinmembercode3282:22 29 Aug '08  
GeneralNice Article! PinmemberCoolPunk9:50 1 Feb '03  
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GeneralRe: Hi PinmemberAchila Liyanarachchi21:48 18 Apr '06  

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