File list (Check if you may need any files):
calculat
........\.classpath
........\.myeclipse
........\.mymetadata
........\.project
........\.settings
........\.........\.jsdtscope
........\.........\com.genuitec.eclipse.j2eedt.core.prefs
........\.........\org.eclipse.core.resources.prefs
........\.........\org.eclipse.jdt.core.prefs
........\.........\org.eclipse.wst.jsdt.ui.superType.container
........\.........\org.eclipse.wst.jsdt.ui.superType.name
........\src
........\...\cm
........\...\..\cn
........\...\..\..\struts2
........\...\..\..\.......\action
........\...\..\..\.......\......\CalculatAction.java
........\...\struts.xml
........\WebRoot
........\.......\calculatForm.jsp
........\.......\index.jsp
........\.......\META-INF
........\.......\........\MANIFEST.MF
........\.......\WEB-INF
........\.......\.......\classes
........\.......\.......\.......\cm
........\.......\.......\.......\..\cn
........\.......\.......\.......\..\..\struts2
........\.......\.......\.......\..\..\.......\action
........\.......\.......\.......\..\..\.......\......\CalculatAction.class
........\.......\.......\.......\struts.xml
........\.......\.......\lib
........\.......\.......\...\asm-3.3.jar
........\.......\.......\...\asm-commons-3.3.jar
........\.......\.......\...\asm-tree-3.3.jar
........\.......\.......\...\commons-fileupload-1.3.1.jar
........\.......\.......\...\commons-io-2.2.jar
........\.......\.......\...\commons-lang3-3.2.jar
........\.......\.......\...\freemarker-2.3.22.jar
........\.......\.......\...\javassist-3.11.0.GA.jar
........\.......\.......\...\ognl-3.0.6.jar
........\.......\.......\...\struts2-core-2.3.24.jar
........\.......\.......\...\xwork-core-2.3.24.jar
........\.......\.......\web.xml