public class Sketcher
{
public static void main(String[] args)
{
theApp = new Sketcher(); // Create the application object
theApp.init(); // ...and initialize it
}
// Initialization of the application
public void init()
{
window = new SketchFrame("Sketcher");
Toolkit theKit = window.getToolkit(); // Get the window toolkit
Dimension wndSize = theKit.getScreenSize(); // Get screen size
// Set the position to screen center & size to 2/3 screen size
window.setBounds(wndSize.width/6, wndSize.height/6, // Position
2*wndSize.width/3, 2*wndSize.height/3); // Size
// Handler class for window events
class WindowHandler extends WindowAdapter
{
// Handler for window closing event
public void windowClosing(WindowEvent e)
{
window.dispose(); // Release the window resources
System.exit(0); // End the application
}
}
private static SketchFrame window; // The application window
private static Sketcher theApp; // The application object
}
2
// Frame for the Sketcher application
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class SketchFrame extends JFrame
{
// Constructor
public SketchFrame(String title)
{
setTitle(title); // Set the window title
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);