Java source code for the UTF-8 to Java-code converter

// Your UTF-8 string here, taken from args, request params, etc.
String utf = ...;

// Convert the input string to a character array.
char[] chars = utf.toCharArray();

StringBuilder sb = new StringBuilder();
for (int i = 0; i < chars.length; i++) {
  int unipoint = Character.codePointAt(chars, i);
  if ((unipoint < 32) || (unipoint > 127)) {
    StringBuilder hexString = new StringBuilder();
    for (int k = 0; k < 4; k++) {  // 4 times to build a 4-digit hex.
      hexString.insert(0, Integer.toHexString(unipoint % 16));
      unipoint = unipoint / 16;
    }
    sb.append("\\u"+hexString);
  } else {
    sb.append(chars[i]);
  }
}

// Display the ASCII encoded string.
System.out.println ("String s = " + sb.toString());

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