File list (Check if you may need any files):
ajaxdemo\.classpath
........\.mymetadata
........\.project
........\.settings\.jsdtscope
........\.........\org.eclipse.jdt.core.prefs
........\.........\org.eclipse.wst.jsdt.ui.superType.container
........\.........\org.eclipse.wst.jsdt.ui.superType.name
........\src\com\controller\CheckUserNameExistsServlet.java
........\WebRoot\index.jsp
........\.......\META-INF\MANIFEST.MF
........\.......\WEB-INF\classes\com\controller\CheckUserNameExistsServlet.class
........\.......\.......\web.xml
........\.......\.......\classes\com\controller
........\.......\.......\.......\com
........\src\com\controller
........\WebRoot\WEB-INF\classes
........\.......\.......\lib
........\src\com
........\WebRoot\META-INF
........\.......\WEB-INF
........\.myeclipse
........\.settings
........\src
........\WebRoot
ajaxdemo