Exemplu Java - Constructie GridLayout

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class GridLayer

{

int nr_linii=0,nr_coloane=0;

public static void main(int x,int y)

{

GridLayer gui=new GridLayer(x,y);

}

JFrame frame;

JLabel label;

GridLayer(int x,int y)

{

if(x>=0&&y>=0)

nr_linii=x;

nr_coloane=y;

frame=new JFrame("Butoane");

JPanel panel=new JPanel();

panel.setLayout(new GridLayout(nr_linii,nr_coloane));

for(int i=0;i<(nr_linii*nr_coloane);i++)

{

label=new JLabel(""+(i+1));

label.setOpaque(true);

int red=(int )(Math.random()*255);

int green=(int )(Math.random()*255);

int blue=(int )(Math.random()*255);

Color random=new Color(red,green,blue);

//Color complementary=new Color (255-red,255-green,255-blue);

label.setBackground(random);

panel.add(label);

}

frame.add(panel,BorderLayout.CENTER);

frame.setVisible(true);

frame.setSize(nr_linii*75,nr_coloane*75);

}

}