linesrectsovals.java

java 课件与资料 java 课件与资料 java 课件与资料 java 课件与资料

// Fig. 12.14: LinesRectsOvals.java
// Drawing lines, rectangles and ovals.
import java.awt.*;
import javax.swing.*;

public class LinesRectsOvals extends JFrame {

   // set window's title bar String and dimensions
   public LinesRectsOvals()
   {
      super( "Drawing lines, rectangles and ovals" );

      setSize( 400, 165 );
      setVisible( true );
   }

   // display various lines, rectangles and ovals
   public void paint( Graphics g )
   {
      super.paint( g );  // call superclass's paint method

      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 );

   } // end method paint

   // execute application
   public static void main( String args[] )
   {
      LinesRectsOvals application = new LinesRectsOvals();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   }

} // end class LinesRectsOvals