driver.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

/**	Author: David D. Riley
 *		Date: May 9, 2005
 *   Driver for an intial drawing program (Figure 2.18)
 *	 This class draws a block letter "P" that is
 *	 60 pixels high and about 30 pixels wide upon 
 *	 a window named Drawing Canvas. 
 */
public class Driver  {
	private DrawingGizmo  pencil;

	public Driver()   {
        pencil = new DrawingGizmo();
        pencil.draw();
        pencil.moveForward();
        pencil.moveForward();
        pencil.moveForward();
        pencil.delay2Sec();
        pencil.turnClockwise();
        pencil.turnClockwise();
        pencil.turnClockwise();
        pencil.moveForward();
        pencil.delay2Sec();
        pencil.turnClockwise();
        pencil.turnClockwise();
        pencil.moveForward();
        pencil.delay2Sec();
        pencil.turnClockwise();
        pencil.turnClockwise();
        pencil.moveForward();
        pencil.turnClockwise();
        pencil.turnClockwise();
        pencil.moveForward();
	}
}