question: private String openFile ( String file ) { BufferedReader br = null ; try { br = new BufferedReader ( new FileReader ( file ) ) ; StringBuffer sb = new StringBuffer ( 5000 ) ; String temp ; while ( ( temp = br . readLine ( ) ) != null ) { sb . append ( temp ) ; } return sb . toString ( ) ; } catch ( FileNotFoundException fnf ) { debug . error ( "FedletConfigurationImpl.getConfiguration: " + file + " for component " + componentName , fnf ) ; return null ; } catch ( IOException ioe ) { debug . error ( "FedletConfigurationImpl.getConfiguration:" + file + " for component " + componentName , ioe ) ; return null ; } finally { if ( br != null ) { try { br . close ( ) ; } catch ( IOException ioe ) { } } } }
target:  Returns the content of a file as String. Returns null if error occurs.