text: public static String escape(String s) {StringBuilder sb = new StringBuilder();for (int i = 0; i < s.length(); i++) {char c = s.charAt(i);if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')'|| c == ':' || c == '^' || c == '[' || c == ']' || c == '\"'|| c == '{' || c == '}' || c == '~' || c == '*' || c == '?'|| c == '|' || c == '&' || c == '/') {sb.append('\\');}sb.append(c);}return sb.toString();}