String to byte array

The default value of each element of the byte array is 0. Fortunately, . Int). Similar Dec 17, 2023 · Guide to Converting Strings to Byte Arrays in C#. We can encode the string into a sequence of bytes using the String. Apr 16, 2024 · String to Byte Array in Python Using the encode () Function. ToInt32(s. 그리고 데이터 읽는 쪽에서는 `byte[]`를 다시 String으로 변환하여 사용합니다. So, for every 2 string characters we add the value to 1 data byte. js. More available characters and byte sizes can be found here. It’s clear from the output that the string to byte array conversion works fine with the default Charset. hexStrToBytes("00A0BF"); This is the most simple case. This method is part of the Convert class and it offers various data type conversion utilities. That's easy, because files are binary data! You shouldn't be reading it as text in the first place if it isn't really text. Aug 5, 2010 · index++; } return data; } Explanation: a. Text; Encoding. RawFormat); return ms. Before converting strings to bytes, you need to understand character encoding. For most usages, you'd know which character set and encoding you need and . Dec 27, 2016 · I would suggest using the members of string, but with an explicit encoding:. row_vector = typecast (string_variable, 'uint8'); % Print the result. Then pass following arguments to the transform() function, Iterator pointing to the start of string. UTF_8. – AaA. getBytes() String API is already loaded with getBytes() methods that convert a string into bytes array. So, I dont want to work on the whole array, but individual byte string at a time, that is one component of that array. unsigned const char *pos = hexstring; char *endptr; Jul 10, 2013 · For converting String to Byte Array use this : String stringToConvert = "This String is 76 characters long and will be converted to an array of bytes"; byte [] theByteArray = stringToConvert. Optional. By contrast, a bytearray object allows you to modify its elements. g. Drawing. toByteArray(charset) Sep 15, 2021 · This example uses the GetBytes method of the Encoding. log(): Jan 25, 2017 · This function will convert a hexadecimal string - NOT prepended with "0x" - with an even number of characters to the number of bytes specified. GetBytes(str) End Function. Jan 28, 2021 · Byte Array - A Java Byte Array is an array used to store byte data types only. A source to initialize the array. The class provides an encodeToByteArray() method. But you can't output this byte-array with Console. Aug 3, 2022 · Learn how to convert String to byte array and vice versa in Java using different methods and charsets. Here is a simple function that does convert a JavaScript string into an Array of numbers that contain the UTF-8 encoding of the string: (&str). ToBase64String (Byte [], Int32, Int32, Base64FormattingOptions) Converts a subset of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 📌. Note: The output string could contain '+', '/' and '='. bytes() method. const str = 'bobbyhadz. Jul 11, 2011 · @Andreas_D: Look at the question of the OP. ToString()) String str2 = new String(bytes1); System. 2. For ASCII strings that contain single-byte characters, each character is split into a sequence of 8 bits. Using TextEncoder object. The StringToByte converter shows a pretty fast solution just based on the strings char array. ReadAllBytes(dialog. Since you're using the BitConverter, the string you get is specifically formatted in a less than friendly way. Using getBytes() method. Jan 17, 2012 · I am using the below function in Java to convert an encrypted String into hex format: public static String toHex(byte [] buf) { StringBuffer strbuf = new StringBuffer(buf. GetBytes (string_with_your_data); – mikhail-t. println(str2); } } Output: Java String To Byte Array with Special Characters. But what i have to do is analyse each byte seperately. Your input may contain delimiters (think MAC addresses, certificate thumbprints, etc), your input may be streaming, etc. private static final byte[] CDRIVES = new byte[] { (byte)0xe0, 0x4f, (byte)0xd0, 0x20, (byte)0xea, 0x3a It then calls the FromBase64String (String) method to decode the UUencoded string, and calls the BitConverter. Just pass the byte array to the String Apr 8, 2013 · 4. Sep 26, 2008 · byte[] byteArray = Hex. With character encoding. Iterator pointing to the end of string. This method returns a byte array that contains the encoded string. getBytes(). test_string = "GFG is best". forName("utf-8")) and new String(bytes, Charset. string_variable = b'\xfd\xfd\xfd\xfd\xfd'; % Convert the string variable to an array of unsigned 8-bit integers. 1. as_bytes gives you a view of a string as a &[u8] byte slice (that can be called on String since that derefs to str, and there's also String. In other words: the above is the equivalent of: [byte[]] ('0xF5', '0x44', '0x29') Feb 2, 2024 · Method 1: Using the Encoding Class. var byteArray [len("Hello, Go!")]byte. com'; const byteArray = Buffer. toString in order to print the array values. To convert a byte array to String, you can use String class constructor with byte[] as the constructor argument. import "fmt". getBytes() method, which is an overloaded method that can encode a string using the platform’s default character set. String. It returns the String as a byte array, using the default platform encoding (which might be UTF8, ISO8859-1, CP-1252, , using 1 byte per ASCII char) – Jun 29, 2012 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. The method encodes a string into sequence of bytes of 0s May 12, 2010 · Let me explain again. Jan 23, 2009 · When you convert a System. Also, your inputstream maynot read all the contents in one go. When converting byte [] to String, you should use this, new String(b, "UTF-8"); instead of, b. To format a number by using the default ("G") format of the current culture, call the ToString () method. So, in this post I will focus on the other side: functions that convert Hex String To Byte Array. Java String To Byte[] Array. println(Arrays. May 7, 2012 · What you really want is the contents of a file as a byte array. The following example defines a string array and attempts to convert each string to a Byte. encode(encoding=encoding) Where, string: It is the string that you want to convert into byte. FileName); answered Feb 12, 2009 at 19:05. For non-ASCII strings that contain multibyte characters, the conversion to a byte array Jul 14, 2020 · Python 3's bytes and bytearray classes both hold arrays of bytes, where each byte can take on a value between 0 and 255. str = "Geeksforgeeks". example : std::string hello ("hello") , world(" world"); auto helloWorld = hello + world; const char* byteArray = helloWorld. index. This function internally points to CPython Library which implicitly calls the encode function for converting the string to specified encoding. The primary difference is that a bytes object is immutable, meaning that once created, you cannot modify its elements. encode (). 1. NET built-in method to convert the string back to byte array. UTF8. Since Java 8, we have Base64 class available. String (byte[] bytes, int offset, int length, String charsetName) String str = "Java"; byte[] byteArray; // convert the string to a byte array // using platform's default charset. The ToString (String, IFormatProvider) method formats a Byte value in a specified format of a specified culture. You can anyone of the below Oct 8, 2009 · The bytes of the resulting string differs depending on what charset you use. Private Function UnicodeStringToBytes(. Convert To Byte Array Using Convert. Int64() fmt Sep 25, 2023 · Basic Conversion. # encoding the string with unicode 8 and 16. You could use: Console. If you have a string separating the values with spaces, you can use String. Problem Statement - Given a byte arra Sep 15, 2020 · 2. Aug 23, 2023 · In this example, the bytes() constructor converts the bytearray to bytes. ToInt32 method to convert each set of four bytes (the size of a 32-bit integer) to an integer. I have to store some constant values (UUIDs) in byte array form in java, and I'm wondering what the best way to initialize those static arrays would be. Unicode encoding class to convert a string into an array of bytes. index / 2 | Division between integers will round down the value, so 0/2 = 0, 1/2 = 0, 2/2 = 1, 3/2 = 1, 4/2 = 2, 5/2 = 2, etc. Java에서 String을 byte 배열로 변환하여 전달하거나 파일에 저장할 수 있습니다. Jan 29, 2020 · Byte Array - A Java Byte Array is an array used to store byte data types only. GetBytes(". encode( str ); Example: In this example we are using the above explained method. ASCII, UTF-16, etc. Suppose you want to use “UTF-8” encoding then it can be done in As I specified little endian (using the '<' char) at the start of the format string the function returned the decimal equivalent. WriteLine(String. val byteArray = "Hello". (index + 1) % 2 | We want odd numbers to result to 1 and even to 0 since the first digit of a hex string is Dec 31, 2011 · 3. Here’s an example using UTF-8 encoding: In this example, the GetBytes method of the UTF8 encoding class is Apr 9, 2023 · The TextEncoder. Conversion of string to byte array with encoding. decode('utf-8') print May 20, 2013 · In case you are really wanting to get a string which contains the hex representation of an array of bytes, here's how you can do that: public static string BytesAsString(byte[] bytes) {. 7+ , new class StandardCharsets byte Mar 21, 2015 · To convert b_array back to string format use . ToString(bytes); // This puts "-" between each value. StringBuilder sb = new StringBuilder(); for (byte b:msg) {. b. As there is no pure byte type in JavaScript we can represent a byte array as an array of numbers, where each number represents a byte and thus will have an integer value between 0 and 255 inclusive. The encoding type we use here is “UTF-8”. If the source is a string, this parameter specifies the encoding used to convert the string to bytes. To reverse this process, you can write a custom method to deserialize the bytes like this: return value. For data which is fundamentally text, need to convert between binary and text, applying an encoding (also known somewhat confusingly as a charset in Java). Sep 22, 2023 · Step 3: Encode the string into bytes. Dec 21, 2022 · Create a byte array of same length as number of characters in the string, because a character takes 1 byte only. A character string is a bunch of characters, like "αά". GetBytes() method to convert a string to a byte Mar 3, 2022 · Byte Array - A Java Byte Array is an array used to store byte data types only. class GetBytesCharDemo. toByteArray(. It can be done as follows: byte array to string conversion: byte[] bytes = initializeByteArray(); String str = new String(bytes); String to byte array conversion: If it is a string, you must also give the encoding (and optionally, errors) parameters; bytearray() then converts the string to bytes using str. Stream s = yourStream; int streamEnd = Convert. The most straightforward method to convert a string to bytes in modern JavaScript environments is using the TextEncoder API. Split('-'). encode() method can encode any valid JavaScript string, including multibyte strings, into a byte array representation of the string. ToArray(); Or as Ben Voigt suggests: return Dec 18, 2022 · Here is an example of how you can use the typecast function to convert the string variable to a row vector: % Define the string variable. Image imageIn) { using (var ms = new MemoryStream()) { imageIn. The test code file is supplied at the Feb 7, 2022 · We can convert Java byte array to String in two ways . To format a number by using a specified format of the current culture, call the ToString (String) method. Similarly, there’s a dedicated method in the String class. getBytes() doesn't return the internal representation of the String as bytes. xxxxxxxxxx. It handles large files by copying the bytes in blocks of 4KiB. ToByte(s, 16)). ToArray(); using Convert. Jan 17, 2022 · A common solution to perform a binary copy of an array using the std::memcpy function. NET String to byte Your original approach of passing a str object to jarray. If the source is a string, this parameter defines how encoding and decoding errors are handled. toCharArray()) {. Encoding class. For converting from a string to a byte slice, string -> []byte: []byte(str) For converting an array to a slice, [20]byte -> []byte: arr[:] For copying a string to an array, string -> [20]byte: copy(arr[:], str) Same as above, but explicitly converting the string to a slice first: copy(arr[:], []byte(str)) Nov 17, 2023 · In this example, we are taking a Python String and performing the bytearray () function on it. Other answers have suggested using new String(byte[]) and String. 7 byte [] output2 = str. Problem Statement - Given a byte arra Oct 12, 2023 · Here are some possible methods: 1. Read more here and here. decode(): print elem Share. public static String convertByte(byte[] msg) {. Python3. Convert a byte array to string. getBytes() etc: Nov 23, 2016 · string convert = "This is the string to be converted"; // From string to byte array byte[] buffer = System. disp (row_vector) Jan 19, 2021 · Byte Array - A Java Byte Array is an array used to store byte data types only. mimetype = mimetype; } Sep 17, 2021 · Try math/big package to convert bytes array to int and to convert int to bytes array. But, with the ISO_8859_1 Charset the output is not correct. you can excess the inner characters array with std::string::data method. array1 = bytearray(str, 'utf-8') Mar 16, 2022 · We had a string with byte array (hexadecimal) sequence, like: "0x65,0x31,0xb6,0x9e,0xaf,0xd2,0x39,0xc9,0xad,0x07,0x78,0x99,0x73,0x52,0x91,0xf5,0x93,0x1a,0x49,0xc6 Dec 15, 2022 · From byte [] to String. This is how I'm currently doing it, but I feel like there must be a better way. ASCIIEncoding enc = new System. Eg: "245FC" is a hexadecimal string. public byte[] ImageToByteArray(System. It should be efficient to access any particular character in that array of strings, and to treat that character as a byte. C#. The simplest way to convert a string to a byte array is by using the []byte() function. If it is an integer, the array will have that size and will be initialized with null bytes. ToByte, you can specify the base from which to convert, which, in your case, is 16. Problem Statement - Given a byte arra Oct 6, 2023 · There are several methods to encode a string into a byte array in JavaScript, depending on the encoding scheme and the environment. Jun 3, 2011 · A byte string is a sequence of bytes, like b'\xce\xb1\xce\xac' which represents "αά". You picked UTF-8 above, but there are other options (e. By Using Base64 class in Java 8; How to convert a byte Array to String in Java without character encoding ? We can convert the byte array to String without even specifying the character encoding . GetBytes(str); } To get a string back from byte array: Converting String to byte [] in Java. Step 4: Output the byte array. Apr 21, 2023 · Method #1 : Using bytes (str, enc) String can be converted to bytes using the generic bytes function. # Python code to demonstrate. // using System. forName( "UTF-8" )); // the best , java 1. getBytes("UTF-8"); String text = new String(bytes, "UTF-8"); By using an explicit encoding (and one which supports all of Unicode) you avoid the problems of just calling text. getBytes(StandardCharsets. into_bytes will consume a String to give you a Vec<u8>. Using Base64. This class provides several methods for encoding strings into bytes and vice versa. string hex = BitConverter. Now you must convert the str to a sequence of numbers first (eg list, tuple, or bytearray): Sep 23, 2015 · the whole idea behind std::string is to wrap the C style strings (null terminated charcaters/bytes array) with a class that manages everything. Improve this answer. String str = "This is a String" ; // default charset, a bit dangerous byte [] output1 = str. Dec 13, 2023 · Method 2: Using []byte Type Casting. Feb 24, 2018 · Change your bytes array to Hex String and save to database, and convert Hex String to bytes array back: public class HexUtils { private static final char[] HEX_ARRAY Jan 2, 2013 · Here is an alternative without using a delimiter but a fixes width for the byte entries. Nov 29, 2017 · You can create a private function: private fun stringToByteArray(texte: String): ByteArray {. UTF_8) to convert a String into a byte[]. Let us look at the code to convert a Python string to bytes. Feb 20, 2017 · You have successfully encoded the string into a byte(). In C#, you can use the Encoding. You’ll be surprised how straightforward it can be! Step-by-Step Examples for C# String to Byte Array. ByVal str As String) As Byte() Return System. Sep 20, 2013 · String s = new String(byteArray, "UTF-8"); byteArray = s. Jan 17, 2022 · In Java, we can use str. We need to convert the characters into a sequence of bytes using a String. byte[] bytes = "hello world". It would be interesting to see the operations you want to support, perhaps expressed as an interface, to make the question more concrete. Now, it’s time to use the encode() method of the TextEncoder instance to convert the string into bytes: let SampleBytes = encoder. ASCII. Moreover, the encodeToByteArray() method internally calls the toByteArray() method with charset UTF-8 as a Nov 7, 2011 · 264. Using String Constructor. byte b = (byte) (Integer. Byte you still have a character set and encoding. ). Split to split it: string str = "00 02 03 FF"; Apr 28, 2022 · Once ending delimiter is found, new buffer would be created to store relevant data between delimiters and initial buffer would have to be restructured to allow data disposal. sampleString := "Golang is fun!" byteArray := []byte( sampleString) // Converting string to byte array. new String(bytes) and new String(bytes, Charset. 5 and earlier. string. H is equal to two bytes (16 bit) unsigned. How to use it with your POJO: @JsonProperty("mimetype") private String mimetype; @JsonProperty("value") private byte[] value; public String getMimetype() { return this. public static void GetBytesChar( char argument ) My first recommendation would be for you to just use []string instead of []byte if you know the input type is going to be an array of strings. Encrypting a string directly is not supported. array() worked in Jython 2. toByteArray(is); Internally this creates a ByteArrayOutputStream and copies the bytes to the output, then calls toByteArray(). . from method to convert a string to a byte array. Parse(sSubStr, NumberStyles. VB. The encode () function of Python encodes the string into bytes based on the specified encoding schema. It can be used to convert a string to a byte array along with the std::string::data function, which returns a pointer to an array containing the C-string representation of the string object. toString()); The code for this article is available on GitHub. If data is going to be a JSON array with various types, then your best option is to use []interface{} instead - Go will happily unmarshal the JSON for you and you can perform checks at runtime to cast those into more specific typed variables on an as Mar 10, 2022 · Syntax of bytes(): bytes (str, enc, error) The bytes take in an object (a string in our case), the required encoding method, and convert it into a byte object. toString(); When you are converting byte array to String, you should always specify a character encoding and use the same encoding while converting back to byte array from String. Text. NET makes it simple to "copy with conversion. Hex String - A Hex String is a combination of the digits 0-9 and characters A-F, just like how a binary string comprises only 0's and 1's. 37. It can be an iterable, a buffer, a string, etc. The method creates a new Buffer that contains the given string Its simple to convert byte array to string and string back to byte array in java. NET makes this really easy: byte[] fileC = File. Encoding. Note that while a null string parses to zero, String. NewInt(int_to_encode). fun String. length * 2); int Aug 6, 2021 · BitConverter. A byte string can be directly stored to the disk directly, while a string (character string) cannot be directly stored on the disk. I noticed that most of tests were performed on functions that convert Bytes array to Hex string. Each character can be one or two 16-bit code units. JavaScript uses Unicode, typically UTF-16 encoding for strings. ): ByteArray. Explore Teams Create a free Team Oct 17, 2014 · This one returns an unsigned byte array representation instead of a Base64 string. You can also use options to add full bytes, whitespace, or hexadecimal representation for each byte. ToByte() Method. const string formatter = "{0,10}{1,16}"; // Convert a char argument to a byte array and display it. log(byteArray. ToString The output is a "-" delimited string, but there's no . InputStream is; byte[] bytes = IOUtils. as_bytes version if you don't need ownership of the bytes. from(str); console. Without character encoding. js, you can also use the Buffer. encode(). package main. private byte[] StringToByteArray(string str) { System. GetBytes(convert); // From byte array to Mar 11, 2024 · Now, let’s have a look at how to convert a part of the String to a byte array. errors: Optional. Remarks. It will return -1 if it encounters an invalid character, or if the hex string has an odd length, and 0 on success. The TextEncoder API. Another approach to convert a string to a byte array involves directly assigning the string to a byte array variable using type casting. 0 you could use this approach: Dim lenaStrings = Array. Empty throws a FormatException. getBytes(); String s = new String(bytes); 1. 0xAB00 = 43776. toString(byteArray)); Output. Nov 10, 2018 · 3. func main() {. Basically, String internally uses to store the Unicode characters in the array. parseInt(theHexaString, 16)); Byte. ToArray(); } } C# Image to Byte Array and Byte Array to Image Converter Class Nov 22, 2008 · Tests: Hex String To Byte Array. String str = new String (byteArray, StandardCharsets. String object to an array of System. B is equal to one byte (8 bit) unsigned. " Just choose the appropriate Encoding class. for (c in texte. 이 글에서는 byte 배열을 `String`으로 변환하는 방법에 대해서 알아보겠습니다. The bytearray () encodes the string and converts it to byte array object in python using str. . JavaScript. Best is to use UTF-8 encoding as that is quite powerful and compact May 10, 2012 · This should work: byte[] bytes = _str. Synonymous to a sequence. The output from the example shows that the original array has been successfully restored. Globalization. The last step is to show the output of the he byte array, in order to do that we have to use the console. See examples, output and code snippets for each approach. Note: We have used the Arrays class in the above example to print the byte array in a readable form. Join(",", lena)) On . ConvertAll(lena, Function(b) b. Aug 12, 2009 · The IOUtils type has a static method to read an InputStream and return a byte[]. Converting bytearray() to String. Jun 28, 2017 · 2. getBytes(); // in old days, before java 1. we need to know when to use 'new' in the right way. Using std::transform. You can choose from several encoding options to convert a string into a byte array: Sample code to change an image into a byte array. Jun 26, 2012 · 202. SetBytes(bytes_array). Parameters specify the subset as an offset in the input array, the number of elements in the array to convert, and whether to insert line breaks in Jul 7, 2017 · To Get byte array from a string . NumberStyles. Println("bytes array", bytes_array) // Convert []byte to int var decoded_int int64 = new(big. Below is the syntax for using the encoding () function. your method is not usable. The confusion arised because of the word "array". This function takes a string as an argument and returns its byte array representation. out. charset: Charset = Charsets. HexNumber)). For example: If our string uses Feb 5, 2019 · -split splits the resulting string into an array of 0xHH strings (H representing a hex digit), which PowerShell's automatic type conversions recognize as the elements of a [byte[]] array in a cast. Mar 7, 2024 · If you use Node. data(); The following code example converts the bit patterns of Char values (Unicode characters) to Byte arrays with the GetBytes method. ToBase64String You can easily convert the output string back to byte array by using Convert. 0x45 = 69. Length); Jun 14, 2024 · In this approach,The TextEncoder API in JavaScript encodes a string into bytes, providing a byte representation using UTF-8 encoding, Syntax: let str = encoder. UTF_8) The String class also has a constructor to convert a subset of the byte array to String. Here are some of the most common functions: 1. I have a collection of byte strings in an array. Moreover String. forName("utf-16")) will all have different byte arrays when you call String#getBytes() (depending on the default charset) Nov 7, 2013 · A string isn't a byte array, which is why the cast fails. encode(SampleString); . This method can be used to create a TextEncoder object that can encode strings into byte arrays using UTF-8 encoding, which is the most Jan 14, 2024 · Finally, we return the populated byte array. As far as a code to convert stream into byte array is one below. mimetype; } public void setMimetype(String mimetype) { this. It simply converts strings to byte array, so in general this is the method to use if you want to know the byte-array of a string character. Convert a string to a byte array with this free online tool. Substring(i, 2), 16); So the following statement can also be used to convert byte array to String in Java. log(byteArray); console. getBytes(Charset. It converts a String to a byte array as well. (source) Encodes the contents of this string using the specified character set and returns the resulting byte array. Copy. ASCIIEncoding(); return enc. encode() Must also provide encoding and optionally errors: Integer: Creates an array of provided size, all initialized to null: Object: A read-only buffer of the object will be used to initialize the byte array: Iterable Nov 14, 2021 · Array [B@2a139a55 Array as String[69, 120, 97, 109, 112, 108, 101, 32, 83, 116, 114, 105, 110, 103] As you can see here printing the byte array gives the memory address so used Arrays. FromBase64String. ToByte(hex. Bytes() fmt. package main import ( "fmt" "math/big" ) func main() { // Convert int to []byte var int_to_encode int64 = 65535 var bytes_array []byte = big. Answers like the two below do implicit conversions (as viewed in Visual Studio's IntelliSense) from the hex to decimal AND/OR fail to handle the alpha part of the hex: 1) bytes[i / 2] = (byte)int. If you are interested in result only, you could skip down to Summary section. // Assigning a string to a byte array using type casting. getBytes("UTF-8"); Providing an explicit encoding charset is encouraged because different encoding schemes may have different byte representations. Sep 8, 2012 · You could store the data in an array of strings of some large fixed size. Examples. 0x12 = 18. The STring has 32 characters. encoding: Optional. Convert. This array now contains the byte representation of the original string, where each character’s Unicode code point is stored as a single byte. You can easily convert string to byte [] in one line: var byteArray = Encoding. Save(ms,imageIn. Parse(s, System. val charset = Charsets. byteArray = str. Unicode. Now that we’re clear about strings and byte arrays let’s dive into converting strings to byte arrays. 다음은 byte 배열을 저장하거나 변환할 때 Encoding 방식을 명시하는 You have to pick a character encoding to convert between a string and a byte array. Array<Byte> = arrayOf() var i = 0. AllowHexSpecifier); 2) bytes[i / 2] = Convert. The bytes() method accepts a third argument on how to handle errors. Select(s => Convert. Problem Statement - Given a byte arra String: Converts the string to bytes using str. 2. getBytes(); System. In such cases it gets easier to justify to pull in an external library like HexUtils, however small. val result: kotlin. Use the . The most common way to convert a string to a byte array in PowerShell is by using the System. WriteLine because then only the type-name is written. parseByte() parses signed bytes only, and doesn't consider the sign bit as a sign bit. Select(s => byte. byte[] bytes = text. Byte array; A lambda function that converts a given character to a byte. To convert a bytearray() to a string, you can use the decode() method with the appropriate encoding: byte_array = bytearray([72, 101, 108, 108, 111]) # ASCII values of 'H', 'e', 'l', 'l', 'o' string_data = byte_array. decode(): for elem in b_array. @mik-T, a hex string is in some format like 219098C10D7 which every two character converts to one single byte. NET 2. Loop through the array, and convert each String to a byte using. getBytes (); – Kartik Domadiya. Jun 6, 2013 at 22:02. Java string class has a metho called getBytes () which returns the number of byte-array of a particular string. pg pl jf da pq qz ax dn lf fw