+ StringBuilder builder = new StringBuilder();
+ for (int index = 0; index < input.length(); index++) {
+ char car = input.charAt(index);
+ // displayable chars in ASCII are in the range 32<->255,
+ // except DEL (127)
+ if (car >= 32 && car <= 255 && car != 127) {
+ builder.append(car);
+ }
+ }
+ input = builder.toString();