project
.......\.classpath
.......\.euml2
.......\.project
.......\.umlproject
.......\bin
.......\...\Book.class
.......\...\Catalogue.class
.......\...\CatalogueItem.class
.......\...\LibrarySystem.class
.......\...\Recording.class
.......\src
.......\...\Book.java
.......\...\Catalogue.java
.......\...\CatalogueItem.java
.......\...\Library system.jpg
.......\...\Library system.ucd
.......\...\LibrarySystem.java
.......\...\Recording.java