filltest.java

来自「this is my java Test」· Java 代码 · 共 55 行

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
 
public class FillTest
{
	public static void main(String[] args)
	{
		FillFrame frame=new FillFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
	}
}
/**
   A frame that contains a panel with drawings
*/
class FillFrame extends JFrame
{
	public FillFrame()
	{
		setTitle("FillTest");
		setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
		//add panel to frame
		FillPanel panel=new FillPanel();
    add(panel);
  }
  public static final int DEFAULT_WIDTH=400;
  public static final int DEFAULT_HEIGHT=400;
}
/**
   A panel that displays filled rectangles and ellipses
*/
class FillPanel extends JPanel
{
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		Graphics2D g2=(Graphics2D) g;
		//draw a rectangle
		double leftX=100;
		double topY=100;
		double width=200;
		double height=150;
		
		Rectangle2D rect=new Rectangle2D.Double(leftX,topY,width,height);
		g2.setPaint(Color.RED);
		g2.fill(rect);
		//draw the enclosed ellipse
		
		Ellipse2D ellipse=new Ellipse2D.Double();
		ellipse.setFrame(rect);
		g2.setPaint(new Color(0,128,128));//a dull blu-green
		g2.fill(ellipse);
	}
}