private static String parseVersionNumber(String line){
  StringTokenizer tokenizer=new StringTokenizer(line," \t");
  if (!expect(tokenizer,"sourceInfo") || !expect(tokenizer,"version") || !tokenizer.hasMoreTokens()) {
    return null;
  }
  return tokenizer.nextToken();
}

private static String parseVersionNumber ( String line ) { StringTokenizer tokenizer = new StringTokenizer ( line , " \t" ) ; if ( ! expect ( tokenizer , "sourceInfo" ) || ! expect ( tokenizer , "version" ) || ! tokenizer . hasMoreTokens ( ) ) { return null ; } return tokenizer . nextToken ( ) ; }
parse the sourceinfo version string .
