File list (Check if you may need any files):
Java弹球游戏\.svn\entries
............\....\format
............\....\prop-base\Ball.ctxt.svn-base
............\....\.........\Ball.java.svn-base
............\....\.........\BallWorld.ctxt.svn-base
............\....\.........\BallWorld.java.svn-base
............\....\.........\Paddle.ctxt.svn-base
............\....\.........\Paddle.java.svn-base
............\....\.........\project.greenfoot.svn-base
............\....\.........\README.TXT.svn-base
............\....\.........\Vector.ctxt.svn-base
............\....\.........\Vector.java.svn-base
............\....\text-base\Ball.ctxt.svn-base
............\....\.........\Ball.java.svn-base
............\....\.........\BallWorld.ctxt.svn-base
............\....\.........\BallWorld.java.svn-base
............\....\.........\Paddle.ctxt.svn-base
............\....\.........\Paddle.java.svn-base
............\....\.........\project.greenfoot.svn-base
............\....\.........\README.TXT.svn-base
............\....\.........\Vector.ctxt.svn-base
............\....\.........\Vector.java.svn-base
............\Ball.class
............\Ball.ctxt
............\Ball.java
............\BallWorld.class
............\BallWorld.ctxt
............\BallWorld.java
............\Brick.class
............\Brick.ctxt
............\Brick.java
............\doc\.svn\entries
............\...\....\format
............\...\....\prop-base\allclasses-frame.html.svn-base
............\...\....\.........\allclasses-noframe.html.svn-base
............\...\....\.........\Ball.html.svn-base
............\...\....\.........\constant-values.html.svn-base
............\...\....\.........\index.html.svn-base
............\...\....\.........\logfile.txt.svn-base
............\...\....\.........\package-frame.html.svn-base
............\...\....\.........\package-list.svn-base
............\...\....\.........\package-summary.html.svn-base
............\...\....\.........\stylesheet.css.svn-base
............\...\....\text-base\allclasses-frame.html.svn-base
............\...\....\.........\allclasses-noframe.html.svn-base
............\...\....\.........\Ball.html.svn-base
............\...\....\.........\constant-values.html.svn-base
............\...\....\.........\index.html.svn-base
............\...\....\.........\logfile.txt.svn-base
............\...\....\.........\package-frame.html.svn-base
............\...\....\.........\package-list.svn-base
............\...\....\.........\package-summary.html.svn-base
............\...\....\.........\stylesheet.css.svn-base
............\...\allclasses-frame.html
............\...\allclasses-noframe.html
............\...\Ball.html
............\...\constant-values.html
............\...\index.html
............\...\logfile.txt
............\...\package-frame.html
............\...\package-list
............\...\package-summary.html
............\...\resources\.svn\entries
............\...\.........\....\format
............\...\.........\....\prop-base\inherit.gif.svn-base
............\...\.........\....\text-base\inherit.gif.svn-base
............\...\.........\inherit.gif
............\...\stylesheet.css
............\greenfoot\.svn\entries
............\.........\....\format
............\.........\....\prop-base\Actor.class.svn-base
............\.........\....\.........\project.greenfoot.svn-base
............\.........\....\.........\World.class.svn-base
............\.........\....\text-base\Actor.class.svn-base
............\.........\....\.........\project.greenfoot.svn-base
............\.........\....\.........\World.class.svn-base
............\images\.svn\entries
............\......\....\format
............\......\....\prop-base\blueball.png.svn-base
............\......\....\.........\paddle.png.svn-base
............\......\....\text-base\blueball.png.svn-base
............\......\....\.........\paddle.png.svn-base
............\......\blueball.png
............\......\paddle.png
............\Paddle.class
............\Paddle.ctxt
............\Paddle.java
............\project.greenfoot
............\README.TXT
............\sounds\.svn\entries
............\......\....\format
............\Vector.class
..........