linesrectsovals.java

Java语言

// Drawing lines, rectangles and ovals
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class LinesRectsOvals extends JFrame {
   private String s = "Using drawString!";

   public LinesRectsOvals()
   {
      super( "Drawing lines, rectangles and ovals" );

      setSize( 400, 165 );
      show();
   }

   public void paint( Graphics g )
   {
      g.setColor( Color.red );
      g.drawLine( 5, 30, 350, 30 );

      g.setColor( Color.blue );
      g.drawRect( 5, 40, 90, 55 );
      g.fillRect( 100, 40, 90, 55 );

      g.setColor( Color.cyan );
      g.fillRoundRect( 195, 40, 90, 55, 50, 50 );
      g.drawRoundRect( 290, 40, 90, 55, 20, 20 );

      g.setColor( Color.yellow );   
      g.draw3DRect( 5, 100, 90, 55, true );
      g.fill3DRect( 100, 100, 90, 55, false );

      g.setColor( Color.magenta );
      g.drawOval( 195, 100, 90, 55 );
      g.fillOval( 290, 100, 90, 55 );
   }

   public static void main( String args[] )
   {
      LinesRectsOvals app = new LinesRectsOvals();

      app.addWindowListener(
         new WindowAdapter() {
            public void windowClosing( WindowEvent e )
            {
               System.exit( 0 );
            }
         }
      );
   }
}