File list (Check if you may need any files):
tp3
...\.classpath
...\.project
...\.settings
...\.........\org.eclipse.jdt.core.prefs
...\bin
...\...\Ex1
...\...\...\Ball.class
...\...\...\BallsApp$1.class
...\...\...\BallsApp.class
...\...\...\BallWorld$1.class
...\...\...\BallWorld$2.class
...\...\...\BallWorld$3.class
...\...\...\BallWorld$4$1.class
...\...\...\BallWorld$4.class
...\...\...\BallWorld.class
...\...\Ex2
...\...\...\Ball.class
...\...\...\BallsApp$1.class
...\...\...\BallsApp.class
...\...\...\BallWorld$1.class
...\...\...\BallWorld$2.class
...\...\...\BallWorld$3$1.class
...\...\...\BallWorld$3.class
...\...\...\BallWorld.class
...\...\Ex3
...\...\...\Ball.class
...\...\...\BallsApp$1.class
...\...\...\BallsApp.class
...\...\...\BallWorld$1.class
...\...\...\BallWorld$2.class
...\...\...\BallWorld$3.class
...\...\...\BallWorld$4$1.class
...\...\...\BallWorld$4.class
...\...\...\BallWorld.class
...\...\...\MyCyclicBarrier.class
...\src
...\...\Ex1
...\...\...\Ball.java
...\...\...\BallsApp.java
...\...\...\BallWorld.java
...\...\Ex2
...\...\...\Ball.java
...\...\...\BallsApp.java
...\...\...\BallWorld.java
...\...\Ex3
...\...\...\Ball.java
...\...\...\BallsApp.java
...\...\...\BallWorld.java
...\...\...\MyCyclicBarrier.java