Question

java画圆

只要一个Frame
里面有个圆!
越简单越好!

Answer 1

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JPanel;

class PaintovalPane extends JPanel
{
public void paintComponent(Graphics g)
{
super.paintComponent(g);
g.setColor(Color.pink);
g.fillOval(100, 100, 200, 200);

}
}
class PaintovalFrame extends JFrame
{
public PaintovalFrame()
{
setTitle("lamp");
setSize(500,500);
addWindowListener(
new WindowAdapter()
{
public void WindowClosing(WindowEvent e)
{
System.exit(0);
}
});
Container contentPane = getContentPane();
contentPane.add(new PaintovalPane());
}
}
public class Paintoval {
public static void main(String[] args) {
JFrame f = new PaintovalFrame();
f.show();

}

}

这个可是够简单了