现在在国外大学里最流行的java学习软件,同时还有大量的example,在名为project的文件里.安装好后用bluej打开peoject的例子,可以进行你想要的任何变化.同时可以了解大量的源码

				/**				 * Filter is an abstract superclass for all image filters in this				 * application. Filters can be applied to OFImages by invoking the apply 				 * method.				 * 				 * @author Michael Kolling and David J Barnes 				 * @version 1.0				 */				public abstract class Filter				{				    private String name;								    /**				     * Create a new filter with a given name.				     * @param name The name of the filter.				     */				    public Filter(String name)				    {				        this.name = name;				    }				    				    /**				     * Return the name of this filter.				     * 				     * @return  The name of this filter.				     */				    public String getName()				    {				        return name;				    }				    				    /**				     * Apply this filter to an image.				     * 				     * @param  image  The image to be changed by this filter.				     */				    public abstract void apply(OFImage image);				}