File list (Check if you may need any files):
Collection\ArrayListDemo01.java
..........\ArrayListDemo02.java
..........\ArrayListDemo03.java
..........\ArrayListDemo04.java
..........\ArrayListDemo05.java
..........\EnumerationDemo01.java
..........\ForeachDemo01.java
..........\GuessNumberDemo.java
..........\HashSetDemo01.java
..........\IteratorDemo01.class
..........\IteratorDemo01.java
..........\IteratorDemo02.java
..........\IteratorDemo03.class
..........\IteratorDemo03.java
..........\LinkedListDemo01.java
..........\LinkedListDemo02.java
..........\LinkedListDemo03.java
..........\ListIteratorDemo01.java
..........\RepeatDemo01.java
..........\RepeatDemo02.java
..........\TreeSetDemo01.java
..........\TreeSetDemo02.java
..........\TreeSetDemo03.java
..........\TreeSetDemo04.java
..........\TreeSetDemo05.java
Collection