public static String truncate ( String str , int limit , String appendage ) { if ( str == null || str . length ( ) <= limit ) { return str ; } return str . substring ( 0 , limit - appendage . length ( ) ) + appendage ; }
Truncates the string so it has length less than or equal to the given limit . If truncation occurs the result will end with the given appendage . Returns null if the input is null .