text: public static String toHexString(String s) {StringBuilder sb = new StringBuilder();for(int i=0;i<s.length();i++) {char ch = s.charAt(i);if (i > 0) {sb.append(' ');}if (ch < 128) {sb.append(ch);} else {if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {sb.append("H:");} else if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {sb.append("L:");} else if (ch > UNI_SUR_LOW_END) {if (ch == 0xffff) {sb.append("F:");} else {sb.append("E:");}}sb.append("0x").append(Integer.toHexString(ch));}}return sb.toString();}