question: protected void init ( ) throws ValueStorageException { try { this . containsJavaFiles = hasJavaFilesInFolder ( rootFolder ) ; } catch ( IllegalStateException e ) { throw new ValueStorageException ( String . format ( "Unable to get files from ''%s''" , rootFolder . getName ( ) ) + e . getMessage ( ) ) ; } this . initialized = true ; }
target:  Checks if java files are available in the root folder or in any children of the root folder