@ Pure public static String join ( MACNumber ... addresses ) { if ( ( addresses == null ) || ( addresses . length == 0 ) ) { return null ; } final StringBuilder buf = new StringBuilder ( ) ; for ( final MACNumber number : addresses ) { if ( buf . length ( ) > 0 ) { buf . append ( MACNUMBER_SEPARATOR ) ; } buf . append ( number ) ; } return buf . toString ( ) ; }
Join the specified MAC numbers to reply a string .