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Nekaj glavnih vgrajenih likov:
import com.sun.java.swing.*; // Za JPanel...
import java.awt.*; // Za Graphics...
import java.awt.geom.*; // Za Ellipse2D...
/** An example of drawing/filling shapes with
* Java2D in Java 1.2.
* 1998 Marty Hall, http://www.apl.jhu.edu/~hall/java/
*/
public class DrawExample1 extends JPanel {
private Ellipse2D.Double circle =
new Ellipse2D.Double(10.0, 10.0, 350, 350);
private Rectangle2D.Double square =
new Rectangle2D.Double(10.0, 10.0, 350, 350);
public void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D)g;
g2d.clearRect(0, 0, getSize().width, getSize().height);
g2d.fill(circle);
g2d.draw(square);
}
protected Ellipse2D.Double getCircle() {
return(circle);
}
public static void main(String[] args) {
WindowUtil.openInJFrame(new DrawExample1(), 380, 400);
}
}
import com.sun.java.swing.*;
import java.awt.*;
/** Poenostavljen način prikaza kako JPanel ali kak drug Container
* uporabla Swing. Prikaže JFrame z določenim Containerjem
* kot vsebino.
* 1998 Marty Hall, http://www.apl.jhu.edu/~hall/java/
*/
public class WindowUtil {
public static JFrame openInJFrame(Container content,
int width,
int height,
String title,
Color bgColor) {
JFrame frame = new JFrame(title);
frame.setBackground(bgColor);
frame.setSize(width, height);
frame.setContentPane(content);
frame.addWindowListener(new ExitListener());
frame.setVisible(true);
return(frame);
}
/** Vzame Color.white kot barvo ozadja. */
public static JFrame openInJFrame(Container content,
int width,
int height,
String title) {
return(openInJFrame(content, width, height, title,
Color.white));
}
/** Uporablja Color.white kot barvo ozadja in ime Container razreda
* kot naslov za JFrame.
*/
public static JFrame openInJFrame(Container content,
int width,
int height) {
return(openInJFrame(content, width, height,
content.getClass().getName(),
Color.white));
}
}
import java.awt.*;
import java.awt.event.*;
/** Listener, ki ga postavimo na začetek Frame ali JFrame
* dela aplikacije, zato da ko zapremo okvir
* istočasno zapremo tudi aplikacijo.
* 1998 Marty Hall, http://www.apl.jhu.edu/~hall/java/
*/
public class ExitListener extends WindowAdapter {
public void windowClosing(WindowEvent event) {
System.exit(0);
}
}
avtor: Filip
Božič
december,
1998