File list (Check if you may need any files):
Lab4_libraryinterface\bluej.pkg
.....................\Book.class
.....................\Book.ctxt
.....................\Book.java
.....................\Film.class
.....................\Film.ctxt
.....................\Film.java
.....................\Item.class
.....................\Item.ctxt
.....................\Item.java
.....................\Library.class
.....................\Library.ctxt
.....................\Library.java
.....................\LibraryInterface.class
.....................\LibraryInterface.ctxt
.....................\LibraryInterface.java
.....................\Music.class
.....................\Music.ctxt
.....................\Music.java
.....................\package.bluej
.....................\README.TXT
Lab4_libraryinterface