question: public static String generateRandomString ( ) { final String characters = "abcdefghijklmnopqrstuvwxyz123456789" ; final int length = generateRandomNumber ( ) ; final char [ ] text = new char [ length ] ; for ( int i = 0 ; i < length ; i ++ ) { text [ i ] = characters . charAt ( random . nextInt ( characters . length ( ) ) ) ; } return new String ( text ) ; }
target:  Generate a random String