question: public static SelectManagerJni create ( ) { try { if ( ! isEnabled ( ) ) { return null ; } SelectManagerJni pollManager = _jniSelectManager . get ( ) ; if ( pollManager == null ) { pollManager = new SelectManagerJni ( ) ; if ( pollManager . start ( ) ) { _jniSelectManager . set ( pollManager ) ; } } return _jniSelectManager . get ( ) ; } catch ( ConfigException e ) { log . finer ( e . toString ( ) ) ; } catch ( Throwable e ) { log . log ( Level . FINER , e . toString ( ) , e ) ; } return null ; }
target:  Returns a jni select manager.