book
....\.classpath
....\.project
....\bin
....\...\book.class
....\...\Booklist.txt
....\...\javapak.class
....\...\librarian.class
....\src
....\...\book.class
....\...\book.java
....\...\Booklist.txt
....\...\javapak.java
....\...\librarian.java