ElecCaculator\.classpath .............\.project .............\.settings\org.eclipse.jdt.core.prefs .............\bin\Caculator.class .............\...\Example$1.class .............\...\Example$2.class .............\...\Example.class .............\src\Caculator.java .............\...\Example.java .............\.settings .............\bin .............\src ElecCaculator