import java.awt.*;
import javax.swing.*;
public class MyDrawPanel extends Jpanel {
public static void main(String[] args) {
MyDrawPanel obj = new MyDrawPanel();
obj.paintComponent(????);
}
public void paintComponent (Graphics g)
{
Graphics2D g2d = (Graphics2D) g;
g.setColor(Color.orange);
g.fillRect(20, 50, 100, 100);
}
}
(2010-11-13 18:14:12)
paintComponent() metodunu ayrıca cağırmaq lazim deyil, çünki sistem onu özü çağırır və lazımi Graphics obyektini verir.
Panel ekranda göstəriləndə onun paintComponent metodu avtomatik çağırılır, sənin çağırmağın lazım deyil.
(2010-11-13 17:53:30)
Panel tekbasina olmaz, onu frame uzerine qoymaq lazimdir.
(2010-11-13 17:52:51)
import java.awt.*;
import javax.swing.*;
public class MyDrawPanelTestProgram {
public static void main(String[] args) {
JFrame frame = new JFrame("My panel");
MyDrawPanel panel = new MyDrawPanel();
frame.add(panel);
frame.setSize(600, 400);
frame.setVisible(true);
}
}
class MyDrawPanel extends JPanel {
public void paintComponent (Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g.setColor(Color.orange);
g.fillRect(20, 50, 100, 100);
}
}