long function ( ) { return nextLong ( 0 , Long . MAX_VALUE ) ; }
returns a random long within 0 - long.max _ value concode_field_sep Random RANDOM concode_field_sep float nextFloat concode_elem_sep float nextFloat concode_elem_sep int nextInt concode_elem_sep int nextInt concode_elem_sep boolean nextBoolean concode_elem_sep double nextDouble concode_elem_sep double nextDouble concode_elem_sep byte[] nextBytes