File list (Check if you may need any files):
MyCalculator
............\build
............\.....\classes
............\.....\.......\mycalculator
............\.....\.......\............\Calculator$Clean.class
............\.....\.......\............\Calculator$Number.class
............\.....\.......\............\Calculator$Operator.class
............\.....\.......\............\Calculator.class
............\build.xml
............\dist
............\....\MyCalculator.jar
............\....\README.TXT
............\manifest.mf
............\nbproject
............\.........\build-impl.xml
............\.........\genfiles.properties
............\.........\private
............\.........\.......\config.properties
............\.........\.......\private.properties
............\.........\.......\private.xml
............\.........\project.properties
............\.........\project.xml
............\src
............\...\mycalculator
............\...\............\Calculator.java
............\...\............\Calculator.java~
............\test