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//File: CustomWorld.ini
/*
#Environment settings
#Sun Jan 21 07:22:52 1996
FONT=Times New Roman
SIZE=400 200
MESSAGE=Hello, Custom World
COLOR=0 50 100
PTSIZE=36
*/
/**
* @version 1.20 1999-07-07
* @author Cay Horstmann
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import java.util.StringTokenizer;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class CustomWorld {
public static void main(String[] args) {
JFrame frame = new CustomWorldFrame();
frame.show();
}
}
class CustomWorldFrame extends JFrame {
public CustomWorldFrame() {
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Properties defaultSettings = new Properties();
defaultSettings.put("FONT", "Monospaced");
defaultSettings.put("SIZE", "300 200");
defaultSettings.put("MESSAGE", "Hello, World");
defaultSettings.put("COLOR", "0 50 50");
defaultSettings.put("PTSIZE", "12");
Properties settings = new Properties(defaultSettings);
try {
FileInputStream sf = new FileInputStream("CustomWorld.ini");
settings.load(sf);
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
StringTokenizer st = new StringTokenizer(settings.getProperty("COLOR"));
int red = Integer.parseInt(st.nextToken());
int green = Integer.parseInt(st.nextToken());
int blue = Integer.parseInt(st.nextToken());
Color foreground = new Color(red, green, blue);
String name = settings.getProperty("FONT");
int size = Integer.parseInt(settings.getProperty("PTSIZE"));
Font f = new Font(name, Font.BOLD, size);
st = new StringTokenizer(settings.getProperty("SIZE"));
int hsize = Integer.parseInt(st.nextToken());
int vsize = Integer.parseInt(st.nextToken());
setSize(hsize, vsize);
setTitle(settings.getProperty("MESSAGE"));
getContentPane().add(new HelloWorldPanel(getTitle(), foreground, f),
"Center");
}
}
class HelloWorldPanel extends JPanel {
public HelloWorldPanel(String aMessage, Color aForeground, Font aFont) {
message = aMessage;
foreground = aForeground;
font = aFont;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(foreground);
g.setFont(font);
FontMetrics fm = g.getFontMetrics(font);
int w = fm.stringWidth(message);
Dimension d = getSize();
int cx = (d.width - w) / 2;
int cy = (d.height + fm.getHeight()) / 2 - fm.getDescent();
g.drawString(message, cx, cy);
}
private Color foreground;
private Font font;
private String message;
}
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