private static boolean isUnM49AreaCode ( String code ) { if ( code . length ( ) != 3 ) { return false ; } for ( int i = 0 ; i < 3 ; ++ i ) { final char character = code . charAt ( i ) ; if ( ! ( character >= ' ' && character <= ' ' ) ) { return false ; } } return true ; }
A UN M . 49 is a 3 digit numeric code .