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;
}

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 ; }
checks if java files are available in the root folder or in any children of the root folder
