Examlex
import java.awt.*;
import javax.swing.*;
import java.awt.Color;
public class Checkerboard extends JFrame
{
private final int ROWS = 8;
private final int COLS = 8;
private final int GAP = 2;
private final int NUM = ROWS * COLS;
private int x;
private JPanel pane = new JPanel
(new GridLayout(ROWS, COLS, GAP, GAP));
private JPanel[] panel = new JPanel[NUM];
private Color color1 = Color.WHITE;
private Color color2 = Color.BLUE;
private Color tempColor;
public Checkerboard()
{
super("Checkerboard");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(pane);
for(x = 0; x
{
panel[x] = new JPanel();
pane.add(panel[x]);
if(x % COLS == 0)
{
tempColor = color1;
color1 = color2;
color2 = tempColor;
}
if(x % 2 == 0)
panel[x].setBackground(color1);
else
panel[x].setBackground(color2);
}
}
public static void main(String[] args)
{
Checkerboard frame = new Checkerboard();
final int SIZE = 300;
frame.setSize(SIZE, SIZE);
frame.setVisible(true);
}
}
The above code creates a loop to fill even-positioned squares with one color and odd-positioned squares with another color, resulting in a checkerboard pattern. Describe how JPanel s and a GridLayout are used to achieve this effect.
Mental Image
A representation of a specific event or object, produced by the mind, that is not presently being sensed but is recalled or imagined.
Compact
An agreement or covenant between two or more parties.
Schema
Schema involves a cognitive framework or concept that helps organize and interpret information in the brain, facilitating understanding and prediction of the world.
Prototype
An original model or first form of something from which later versions are developed or copied.
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