myrect2d.java

java小程序

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.awt.geom.*;
public class MyRect2D extends JFrame
{
public MyRect2D()
{
super("MyRect2D:绘制2D图形");
setSize(240,160);
setVisible(true);
//show();
}
public void paint(Graphics g)
{
Graphics2D g2d=(Graphics2D)g;
g2d.setPaint(Color.red);
g2d.setStroke(new BasicStroke(6.0f));
g2d.draw(new Rectangle2D.Double(80,40,70,100));
}
public static void main(String args[])
{
MyRect2D app=new MyRect2D();
app.addWindowListener(new MyWindowListener());
}
}