GridLayout in java ~ java help

Java GridLayout

The GridLayout is used to arrange the components in rectangular grid. One component is displayed in each rectangle.

Constructors of GridLayout class

1. GridLayout(): creates a grid layout with one column per component in a row.
2. GridLayout(int rows, int columns): creates a grid layout with the given rows and columns but no gaps between the components.
3. GridLayout(int rows, int columns, int hgap, int vgap): creates a grid layout with the given rows and columns alongwith given horizontal and vertical gaps.

Example of GridLayout class

1. import java.awt.*;  
2. import javax.swing.*;  
3.   
4. public class MyGridLayout{  
5. JFrame f;  
6. MyGridLayout(){  
7.     f=new JFrame();  
8.       
9.     JButton b1=new JButton("1");  
10.     JButton b2=new JButton("2");  
11.     JButton b3=new JButton("3");  
12.     JButton b4=new JButton("4");  
13.     JButton b5=new JButton("5");  
14.         JButton b6=new JButton("6");  
15.         JButton b7=new JButton("7");  
16.     JButton b8=new JButton("8");  
17.         JButton b9=new JButton("9");  
18.           
19.     f.add(b1);f.add(b2);f.add(b3);f.add(b4);f.add(b5);  
20.     f.add(b6);f.add(b7);f.add(b8);f.add(b9);  
21.   
22.     f.setLayout(new GridLayout(3,3));  
23.     //setting grid layout of 3 rows and 3 columns  
24.   
25.     f.setSize(300,300);  
26.     f.setVisible(true);  
27. }  
28. public static void main(String[] args) {  
29.     new MyGridLayout();  
30. }  
31. }  

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