question: private void splitFullName ( ) { int firstEnd = fullName . indexOf ( '.' ) ; int secondEnd = fullName . indexOf ( '.' , firstEnd + 1 ) ; timestamp = fullName . substring ( 0 , firstEnd ) ; uniqueString = fullName . substring ( firstEnd + 1 , secondEnd ) ; hostnameAndMeta = fullName . substring ( secondEnd + 1 , fullName . length ( ) ) ; }
target:  Splits up the full file name into its main components timestamp, uniqueString and hostNameAndMeta and fills the respective variables.