public static String myEncode(String str) throws UnsupportedEncodingException { 
  byte[] strBytes = str.getBytes("utf-8"); 
  byte[] newStrByte = new byte[strBytes.length]; 
  for (int i = 0; i < strBytes.length; i++) { 
   newStrByte[i] = (byte) (strBytes[i] ^ 0x01); 
  } 
  return new String(newStrByte); 
 } 
 
 
String encodeStr = myEncode("IdmmnA\"547''+) ')%\"A ^*((!Vnsme"); 
  System.out.println(encodeStr); 

function toUTF8Array(str) { 
 var utf8 = []; 
 for (var i=0; i < str.length; i++) { 
  var charcode = str.charCodeAt(i); 
  if (charcode < 0x80) utf8.push(charcode); 
  else if (charcode < 0x800) { 
   utf8.push(0xc0 | (charcode >> 6), 
      0x80 | (charcode & 0x3f)); 
  } 
  else if (charcode < 0xd800 || charcode >= 0xe000) { 
   utf8.push(0xe0 | (charcode >> 12), 
      0x80 | ((charcode>>6) & 0x3f), 
      0x80 | (charcode & 0x3f)); 
  } 
  // surrogate pair 
  else { 
   i++; 
   // UTF-16 encodes 0x10000-0x10FFFF by 
   // subtracting 0x10000 and splitting the 
   // 20 bits of 0x0-0xFFFFF into two halves 
   charcode = 0x10000 + (((charcode & 0x3ff)<<10) 
      | (str.charCodeAt(i) & 0x3ff)); 
   utf8.push(0xf0 | (charcode >>18), 
      0x80 | ((charcode>>12) & 0x3f), 
      0x80 | ((charcode>>6) & 0x3f), 
      0x80 | (charcode & 0x3f)); 
  } 
 } 
 return utf8; 
} 

bytes=stringToAsciiByteArray(str); 
 for (var i = 0; i < bytes.length; i++) { 
 
 var newByte = (bytes[i]^0x01); 
 // newByte = (newByte^0x01); 
 console.log(String.fromCharCode(newByte)); 
 encodeStr += String.fromCharCode(newByte); 
 }; 
 console.log(encodeStr);