question: private Template createAndStoreTemplate ( String key , InputStream inputStream , File file ) throws Exception { if ( verbose ) { log ( "Creating new template from " + key + "..." ) ; } Reader reader = null ; try { String fileEncoding = ( fileEncodingParamVal != null ) ? fileEncodingParamVal : System . getProperty ( GROOVY_SOURCE_ENCODING ) ; reader = fileEncoding == null ? new InputStreamReader ( inputStream ) : new InputStreamReader ( inputStream , fileEncoding ) ; Template template = engine . createTemplate ( reader ) ; cache . put ( key , new TemplateCacheEntry ( file , template , verbose ) ) ; if ( verbose ) { log ( "Created and added template to cache. [key=" + key + "] " + cache . get ( key ) ) ; } if ( template == null ) { throw new ServletException ( "Template is null? Should not happen here!" ) ; } return template ; } finally { if ( reader != null ) { reader . close ( ) ; } else if ( inputStream != null ) { inputStream . close ( ) ; } } }
target:  Compile the template and store it in the cache.