File list (Check if you may need any files):
Calculator\.classpath
..........\.project
..........\.settings\org.eclipse.jdt.core.prefs
..........\bin\feng\lu\niu\Calculator$1.class
..........\...\....\..\...\Calculator$MyListener.class
..........\...\....\..\...\Calculator.class
..........\src\feng\lu\niu\Calculator.java
..........\bin\feng\lu\niu
..........\src\feng\lu\niu
..........\bin\feng\lu
..........\src\feng\lu
..........\bin\feng
..........\src\feng
..........\.settings
..........\bin
..........\src
Calculator