File list (Check if you may need any files):
ExpressionTreeBEV\build.xml
.................\build
.................\.....\classes
.................\.....\.......\expressiontreebev
.................\.....\.......\.................\BiExpTree.class
.................\.....\.......\.................\ExpressionTreeBEV.class
.................\.....\.......\.................\Node.class
.................\manifest.mf
.................\nbproject
.................\.........\build-impl.xml
.................\.........\genfiles.properties
.................\.........\private
.................\.........\.......\private.properties
.................\.........\.......\private.xml
.................\.........\project.properties
.................\.........\project.xml
.................\src
.................\...\expressiontreebev
.................\...\.................\BiExpTree.java
.................\...\.................\ExpressionTreeBEV.java
.................\...\.................\Node.java