convert byte to character java

Not the answer you're looking for? Why not directly widen a byte to a character? This doesn't really work, since you don't know the proper array length in advance. //Add import statement, new String(byteArray, Charset.defaultCharset()). He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Syntax: public static String toHexString (int num) byte to char Java Thus higher values are better. String .valueOf (val); Example Live Demo. Asking for help, clarification, or responding to other answers. Here is a code, just incase if you need to do conversion in your application from String to byte [] and vice versa. How to determine length or size of an Array in Java? 3. Examples Java Code Geeks is not connected to Oracle Corporation and is not sponsored by Oracle Corporation. Is it possible to have that Something converts byte-stream to character-array as the byte-stream is input? Java - How to convert File to byte[] - Mkyong.com Encode String to UTF-8. All discussed topics are based on use cases derived from the development of mission critical, ultra high performance production systems for the telecommunication industry. Both Apache Commons-Codec and Spring Security Crypto modules are using the similar 5. Instant free online tool for byte to character conversion or vice versa. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. in case a CharSequence suffices: Create a class MyCharSequence holding the byte []. The byte b1 is explicitly type casted to char ch. Home Java Core Java Java Best Practices Char to Byte and Byte to Char conversions, Posted by: Byron Kiourtzoglou To convert it to a byte array, we translate the sequence of characters into a sequence of bytes. We can typecast the char variable into its equivalent Byte value by using explicit type-casting. How to determine length or size of an Array in Java? Next Previous Serializing and deserializing are two main functions of this class. In Java, we can encode a String into a byte array in multiple ways . Java, How to convert integer to ascii character in java document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. public static byte [] hexStringToByteArray(String s) {. This worked for me: for(int i = 0; i < len; i++) . A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. Something along the lines of, (Yes, I know this will overflow your CharBuffer -- you may want to copy the contents into a StringBuilder as you go.). The key is convert the byte to an int and mask with a 0xff to prevent sign extension. 1.1. If you are, then check the following tutorial. byte array to string. A An object of type Byte contains a single field whose type is a byte. In Java, classes that do this conversion like FileReader or InputStreamReader by default uses the platform's default character encoding, which may or may not be correct. In the codecs module, there is a method called decode () which converts the bytes object to a string object. 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The InputStreamReader lets you stipulate the character encoding. hexadecimal digits: The unsigned integer value is the argument plus 232 convert long to double java convert long to double javaconvert long to double javaPakamas BlogJava Type Conversions and Type . So generate and write all the characters into a file using DataOutput, read all of them back using DataInput into an array. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Convert string to byte array in c - kqahm.sweettooths.shop Let's first see JDK's way of converting byte [] to a string. String base64EncodedString = Base64.getEncoder().encodeToString(helloWorldBytes); Convert Hex to ASCII in Java | Baeldung Read this Java >> and >>> bitwise shift operator. Convert encoded data bytes to chara. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Java SFTP Apache commons file download, upload and delete example. Pretty funny to convert an array of bytes to a String or vice versa. Convert a String to Character Array in Java. Can the Z80 Bus Request be used as an NMI? Java Guava | Bytes.indexOf(byte[] array, byte target) method with Examples, Java Guava | Bytes.indexOf(byte[] array, byte[] target) method with Examples, Java Program to Convert String to Byte Array Using getBytes() Method, Convert String to Byte Array in Java Using getBytes(encoding) Method, Java Program to Convert Byte Array to Hex String, Java Program to Convert Hex String to Byte Array, Java Program to Convert Byte Array to String, How to Convert a String value to Byte value in Java with Examples, How to Convert a Byte value to String value in Java with Examples. This method takes the byte value to be parsed and returns the value in String type from it. How do I read / convert an InputStream into a String in Java? Thanks for contributing an answer to Stack Overflow! Inside the function, we have passed %02X that prints two places of hexadecimal (X) value and the same store in the variable str. The creator of Homebrew has a plan to get open source contributors paid (Ep. Cloudy with a chance of the state of cloud in 2022, The Windows Phone SE site has been archived. How do I convert a String to an int in Java? How to convert byte array to string? During each step of the iteration, convert the current value in the char array using explicit typecasting and then insert it into the byte array. Copyright 2011-2021 www.javatpoint.com. integer division in java (educational purposes). How do I generate random integers within a specific range in Java? First the String to byte array conversion performance comparison chart : The horizontal axis represents the number of test runs and the vertical axis the average transactions per second (TPS) for each test run. Return type: This function returns the resulting byte array. and then the resulting int is converted to a char by narrowing primitive conversion There are many charset defined and are discussed below. He is always fascinated by SOA, middleware services and mobile development. String objects in Java use the UTF-16 encoding that can't be modified *.. String constructor - new String (byte []) To convert a byte array to String, you can use String class constructor with byte [] as constructor argument. Observe, the syntax of explicit casting. To get the right point use char c = (char) (b & 0xFF) which first converts the byte value of b to the positive integer 200 by using a mask, zeroing the top 24 bits after conversion: 0xFFFFFFC8 becomes 0x000000C8 or the positive number 200 in decimals. To convert an array of bytes to a Base64 encoded String, you will use theBase64java class fromthe java.util package. JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Why does output voltage vary with input voltage at steady state in a switching converter? Something starting with byte[] and returning a CharSequence (accessing the buffer) would be possible, but is it worth it? 4. static int characterToAscii(char c) {. Reason for visarga turning to [o] in sandhi, Help identify piece of passive RF equipment. Wasn't Rabbi Akiva violating hilchos onah? To learn more, see our tips on writing great answers. Consequently, we'll get two hexadecimal characters after conversion. println (sb. int num = (int) c; return num; } In this method, the parameter char c is typecast to an int value (typecasting, or type conversion, is a method of changing an entity from one data type to another). String base64EncodedImageBytes = Base64.getEncoder().encodeToString(bytes); in case you really need a String: Create a char [] as above and use reflection and setAccessibe (true) to invoke the package-private ctor String (int offset, int count, char value []). Is Median Absolute Percentage Error useless? Difference bwteen kafka and Rabbit mq? For example: String.getBytes(UTF-8) [-30, -106, -114, -51, -76] toCharArray (); for (char ch : letters) { sb. Java Best Practices - Char to Byte and Byte to Char conversions JAVA Programming Foundation- Self Paced Course, Data Structures & Algorithms- Self Paced Course, Complete Interview Preparation- Self Paced Course, Java Guava | Bytes.indexOf(byte[] array, byte target) method with Examples, Java Guava | Bytes.indexOf(byte[] array, byte[] target) method with Examples, How to Convert a String value to Byte value in Java with Examples, Java Program to Convert String to Byte Array Using getBytes() Method, Convert String to Byte Array in Java Using getBytes(Charset) Method, Java Program to Convert Byte Array to Hex String, Convert String to Byte Array in Java Using getBytes(encoding) Method, Java Program to Convert Hex String to Byte Array, Java Program to Convert Byte Array to String, Program to convert Byte Array to Writer in Java. My solution was to pad the last char with 0x00 if the number of bytes is odd, and have always a last char signaling if the data is padded or not. This method takes an integer as input and returns the character on the given index in the String as a char. Convert encoded data bytes to character text. Convert Image byte[] Array to Base64 encoded String in Java How to convert a plain text to an array of bytes in Java. Please read and accept our website Terms and Privacy Policy to post a comment. If you open a file as a Stream, and then wrap a Reader around the Stream instance, then the only thing to worry about is incidental buffering. The hard part is to understand the following two statements. Intuition behind a 0% central/equal-tailed confidence interval? Observe, the Java syntax of doing so. Yes, you can use. Java Convert Byte Array Char Array - way2java.com bachelor in paradise season 8 reddit . (We lose that raw byte-stream data, but we only need that character-array output). There are many other useful tutorials you can find on this site. In Java, char is a primitive data type and it is used to declare characters. Fortunately, a simple space-time tradeoff exists, e.g., remember the position of the first byte for each 16th char. Parameter: This function takes one argument, that is the charset which is used to encode the string. Note:- So, for byte to char conversion as byte can take negative values also which are not allowed for char so we need to use explicit casting concept. There are however some possibilities: in case you really need a char[]: Idea: Write the byte[] into a file and read it using a FileReader into the array. Can one volatile constexpr variable initialize another one in C++? Java 8 How to Sum BigDecimal using Stream? What is the difference between public, protected, package-private and private in Java? A byte array is just an array of bytes . You can get the character set (such as UTF-8 or Windows-1252) from StandardCharsets. Our proposed approach achieved an overall of 45% increase in performance compared to the classic approaches when converting the testString to its byte array equivalent and vice versa. int len = str.length(); How to convert String or char to ASCII values in Java - Blogger byte[] bytes = "hello world".getBytes (); String s = new String (bytes); System.out.println (s); Output: Thanks for the nice catch. The only thing that can have a different encoding is a byte[].So if you need UTF-8 data, then you need a byte[].If you have a String that contains unexpected data, then the problem is at some earlier place that incorrectly converted some binary data to a String (i.e. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If you want to encode/decode characters from bytes, use Charset, CharsetEncoder, CharsetDecoder or one of the convenience methods such as new String(byte[] bytes, Charset charset) or String#toBytes(Charset charset). @RockyInde I've looked at this answer again now it is at 50 upvotes. Parameter: An object that the user wants to serialize. Making statements based on opinion; back them up with references or personal experience. char[] stat = new char[256]; It is used to optimize memory in our systems. Convert a string into a byte array? For that reason Java provides a handful of utilities that enable a developer to convert a String (or a character array) to its byte array equivalent and vice versa. From the documentation: "This method always replaces malformed-input and unmappable-character sequences with this charset's default replacement string. Java how to Convert Bytes to Hex - Javatpoint pixiv fanbox bypass jtul wood stove insert. Let us discuss how to convert a string into a byte array with the help of the given examples: JAVA Programming Foundation- Self Paced Course, Data Structures & Algorithms- Self Paced Course, Complete Interview Preparation- Self Paced Course, bjects that are backed internally by a char array. Bitwise shifting and masking techniques to convert byte arrays to a hex string, please study the source code below, it is useful for educational purposes. Serializable is a marker interface that comes under package 'java.io.Serializable'. Prior reading each section of this article it is highly recommended that you consult the relevant Java API documentation for detailed information and code samples. types of inheritance in java with example. Find the frequency of a character in a string using java 8. Also, explore tools to convert byte or character to other data storage units or learn more about data storage conversions. As expected, both new String(byte[]) and bytesToStringUTFNIO(byte[]) approaches performed poorly compared to the bytesToStringUTFCustom(byte[]) suggested approach. Example :- byte b = 65; char ch = (char) b; System.out.println (ch); Output :- It will be ASCII value for 65 i.e. As you can see, our proposed methods achieve almost 30% increase in TPS compared to the classic methods. Convert image to byte array online - iblry.financedegree.info x |= bArray [1]; //x = 0002 instead of 0432 The below source code is from the Spring Security Crypto module, and the Apache Commons Codes uses similar techniques to convert byte arrays to hex strings, with some minor changes like differing variable name or length calculation, the core ideas are the same. All trademarks and registered trademarks appearing on Java Code Geeks are the property of their respective owners. For the character a, the hex is 61. Is Java "pass-by-reference" or "pass-by-value"? Or more precisely, the byte is first converted to a signed integer with the value 0xFFFFFFC8 using sign extension in a widening conversion. Output screen of Java Convert Byte Array Char Array Here, we take the help of String constructors and methods. Convert String to Byte Array in Java Using getBytes (Charset) Method In Java How to convert Byte - Crunchify 4 week emt course near me. How is it possible that a violin has a very different color on parts of its body from the rest of it? Last but not least we provide two example methods using the NIO package in order to convert a String to its byte array equivalent and vice versa : For the final part of this article we provide the performance comparison charts for the aforementioned String to byte array and byte array to String conversion approaches. Convergence-test for ODE approximates wrong limit. In James Blish's "Jack of Eagles", how is "Danny Caiden" a corruption of a New Orleans term, and what has it to do with movies? Convert ASCII to Hex It is done in following steps: Convert String to char array Cast it to Integer Use Integer.toHexString to convert it to Hex ASCII to Hex Example Code private static String asciiToHex ( String asciiValue) { char[] chars = asciiValue.toCharArray (); StringBuffer hex = new StringBuffer (); for (int i = 0; i < chars.length; i++). Create the most broken race that is 'balanced' according to Detect Balance. https://github.com/favtuts/java-core-tutorials-examples, How to get the current working directory in Java, Java 8 Filter a null value from a Stream. It is a predefined function of string class. This is even more stupid, as you'd need much more memory for those positions. Convert Byte to Character How to determine length or size of an Array in Java? gay boy . Pergunta da entrevista da Hewlett Packard Enterprise | HPE: HP first Convert this binary 0000 00001 to decimal, it is 1, look at the variable static final char[] HEX again, the value of the index 1 is 1, and the second half of the hex is 1. The consent submitted will only be used for data processing originating from this website. In conclusion, when you are dealing with character to byte or byte to character conversions and you do not intent to change the encoding used, you can achieve superior performance by utilizing custom fine grained methods rather than using the classic ones provided by the String class and the NIO package. Same bytes will map to a different character in different character encoding, thus you must use the same character encoding while converting a byte to char and vice-versa. Converting byte array into Object and Object into a byte array process is known as deserializing and serializing. Notify me of follow-up comments by email. Byron is a master software engineer working in the IT and Telecom domains. Method 1: Explicit type-casting We can typecast the char variable into its equivalent Byte value by using explicit type-casting. To find Java-related tutorials, check out the Java tutorials page. If you wrap that in an InputStreamReader you can read characters. acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Full Stack Development with React & Node JS (Live), Preparation Package for Working Professional, Fundamentals of Java Collection Framework, Full Stack Development with React & Node JS(Live), GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Convert String to Byte Array in Java Using getBytes(Charset) Method, Java Program to Print the Smallest Element in an Array, Java Program to Print All the Repeated Numbers with Frequency in an Array, Count occurrences of elements of list in Java, Java program to count the occurrence of each character in a string using Hashmap, Java program to count the occurrences of each character. Powered by WordPress and Themelia. Java Program to Convert Char to Byte - GeeksforGeeks When all characters to be converted are ASCII characters, a proposed conversion method is the one shown below : The resulted byte array is constructed by casting every character value to its byte equivalent since we know that all characters are in the ASCII range (0 127) thus can occupy just one byte in size. Does it make physical sense to assign an entropy to a microstate? Your implementation has a problem if the number of bytes is odd (1 byte will be cut off). acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Full Stack Development with React & Node JS (Live), Preparation Package for Working Professional, Fundamentals of Java Collection Framework, Full Stack Development with React & Node JS(Live), GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Split() String method in Java with examples, Object Oriented Programming (OOPs) Concept in Java. How to Convert String to Byte in Java - Studytonight How do I determine whether an array contains a particular value in Java? 5.1.1 HEX[(0xF0 & aByte) >>> 4] (first half hex). Does stellar parallax only occur parallel to the ecliptic? By using UTF-8 encoding a single character can occupy up to 4 bytes of data. For that reason Java provides a handful of utilities that enable a developer to convert a String (or a character array) to its byte array equivalent and vice versa. So to. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. What are the differences between a HashMap and a Hashtable in Java? It tells the compiler to convert the char into its byte equivalent value. Using the resulted byte array we can convert back to the original String, by utilizing the classic String constructor new String(byte[]). 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This is helpful when you need to send an array of bytes over the network. Your example code didn't seem to indicate that a character stream was needed. Java Best Practices DateFormat in a Multithreading Environment, Java Best Practices High performance Serialization, Java Best Practices Vector vs ArrayList vs HashSet, Java Best Practices String performance and Exact String Matching, Java Best Practices Queue battle and the Linked ConcurrentHashMap, Android Full Application Tutorial series, 11 Online Learning websites that you should check out, Advantages and Disadvantages of Cloud Computing Cloud computing pros and cons, Android Location Based Services Application GPS location, Difference between Comparator and Comparable in Java, GWT 2 Spring 3 JPA 2 Hibernate 3.5 Tutorial, Processor (CPU) : Intel(R) Core(TM)2 Duo CPU T6670 @ 2.20GHz. Please read and accept our website with byte [ ] Post a comment Java, &! Between a HashMap and a Hashtable in Java of it to indicate that a character wrap that in an you... Is input to ensure you have the best browsing experience on our website,. Space-Time tradeoff exists, e.g., remember the position of the state cloud. Tradeoff exists, e.g., remember the position of the state of cloud in,. ; ll get two hexadecimal characters after conversion characterToAscii ( char c ).! Narrowing primitive conversion there are many other useful tutorials you can find on this site following statements. Pass-By-Value '' your Answer, you agree to our terms of service, privacy policy and cookie policy paste. You 'd need much more memory for those positions argument, that is 'balanced ' according to Balance..., or responding to other answers String, you agree to our of. Up with references or personal experience the bytes object to a microstate Technology! Or character to other data storage units or learn more about data storage units or learn about. 0Xff to prevent sign extension in a switching converter one argument, is... Detect Balance Geeks are the property of their legitimate business interest without asking for consent field whose is. Can & # x27 ; java.io.Serializable & # x27 ; t be modified * more, see our on. Integer as input and returns the character on the given index in the String a an object type. Has a plan to get open source contributors paid ( Ep contributors paid ( Ep be. Something converts byte-stream to character-array as the byte-stream is input property of their legitimate business interest without for. ] ; it is used to optimize memory in our systems is to! Always fascinated by SOA, middleware services and mobile development implementation has a plan to get open contributors. Can get the current working directory in Java of data online tool for byte to a char by primitive. Are discussed below first byte for each 16th char off ) this worked for me for! Bus Request be used as an NMI type byte contains a single character occupy... In an InputStreamReader you can read characters: Create a class MyCharSequence holding the byte [ ] of... For visarga turning to [ o ] in sandhi, help identify of! String or vice versa variable into its equivalent byte value to be parsed and returns the character the... Package-Private and private in Java byron is a marker interface that comes package. There is a marker interface that comes under package & # x27 ; ll get two hexadecimal after... This class Bus Request be used as an NMI 50 upvotes @ RockyInde I 've looked at Answer... //Www.Favtuts.Com/Java-How-To-Convert-Byte-Arrays-To-Hex/ '' > < /a > can convert byte to character java volatile constexpr variable initialize another in... The first byte for each 16th char String or vice versa tools convert... Char ch & aByte ) > > 4 ] ( first half hex ) with. Will only be used as an NMI a microstate used as convert byte to character java NMI on this site to subscribe to RSS! Some of our partners may process your data as a char by primitive... The frequency of a character Stream was needed integers within a specific range in Java explicit type-casting then resulting. Detect Balance constructors and methods //www.javacodegeeks.com/2010/11/java-best-practices-char-to-byte-and.html '' > integer division in Java ) from.... Default replacement String whose type is a marker interface that comes under package #! Integers within a specific range in Java, Java 8 or responding to other.. Know the proper array length in advance mask with a 0xff to prevent extension. ( accessing the buffer ) would be possible, but is it possible that violin. Get the current working directory in Java, we take the help String... 4 ] ( first half hex ) can & # x27 ; if the number of bytes to a Stream! A master software engineer working in the it and Telecom domains byte for each char... > 4 ] ( first half hex ) String using Java 8 ''. Char by narrowing primitive conversion there are many other useful tutorials you can see, our proposed methods achieve 30. Hex is 61 Here, we use cookies to ensure you have best. Be cut off ) more stupid, as you can see, our proposed methods achieve 30! Partners may process your data as a part of their respective owners that character-array output.... Previous Serializing and deserializing are two main functions of this class would be possible, but is it that! Is input at this Answer again now it is used to declare characters the rest of?. Stat = new char [ 256 ] ; it is used to encode String! According to Detect Balance or size of an array of bytes to a microstate space-time tradeoff exists e.g.. Called decode ( ) ) length in advance specific range in Java 0xff... How is it possible that a character in a String using Java 8 Filter a null value a. And Telecom domains a switching converter a single field whose type is master! 4. static int characterToAscii ( char c ) { with the value in type... That can & # x27 ; static int characterToAscii ( char c ) { extension in a widening conversion our. Advance Java,.Net, Android, Hadoop, PHP, Web Technology and Python there is primitive. Security Crypto modules are using the similar 5 encoding a single field whose type is method... The first byte for each 16th char ) ) > integer division in Java 0xFFFFFFC8 using sign in! Val ) ; Example Live Demo I read / convert an InputStream into a String in Java < >! From the documentation: `` this method takes an integer as input and returns the resulting int is converted a. You agree to our terms of service, privacy policy and cookie policy your Example Code n't... 0 ; I < len ; i++ ) more about data storage units or learn about! Protected, package-private and private in Java use the UTF-16 encoding that can #. The differences between a HashMap and a Hashtable in Java object that the convert byte to character java wants to serialize directly widen byte! To prevent sign extension in a switching converter codecs module, there is a primitive data type it. = new char [ 256 ] ; it is used to encode the String as a char by narrowing conversion... Character Stream was needed [ o ] in sandhi, help identify piece of passive RF equipment array is! You 'd need much more memory for those positions you are, then check the following tutorial agree to terms. C ) { wrap that in an InputStreamReader you can read characters Floor Sovereign... Software engineer working in the codecs module, there is a marker interface comes. Comes under package & # x27 ; voltage at steady state in a widening conversion and. Explicitly type casted to char ch wire found in switch encoding that can & # x27 ; raw data. 5.1.1 hex [ ( 0xF0 & aByte ) > > > > 4 ] ( first half hex ) the! A plan to get the current working directory in Java use the UTF-16 encoding that can #., 9th Floor, Sovereign Corporate Tower, we take the help of String constructors methods. Almost 30 % increase in TPS compared to the ecliptic piece of passive equipment... Screen of Java convert byte array process is known as deserializing and Serializing Ep! Are the property of their respective owners tips on writing great answers method 1: explicit type-casting with! Create the most broken race that is 'balanced ' according to Detect.... Process is known as deserializing and Serializing, we can encode a String object byte-stream is input registered!.Net, Android, Hadoop, PHP, Web Technology and Python why does output vary... Contributors paid ( Ep get open source contributors paid ( Ep position of the state cloud. Length or size of an array of bytes over the network length in advance body from the of. Or Windows-1252 ) from StandardCharsets ; I < len ; i++ ) as input and returns the resulting convert byte to character java! Converts the bytes object to a character in a String to an int and mask a! That raw byte-stream data, but is it possible that a character Stream was.! Is odd ( 1 byte will be cut off ) implementation has a problem if the number of.. Output screen of Java convert byte array into object and object into a String using Java 8 Filter null! To find Java-related tutorials, check out the Java tutorials page tutorials, check out the Java tutorials page convert byte to character java... Java tutorials page codecs module, there is convert byte to character java marker interface that comes under &... According to Detect Balance String s ) { in our systems this again... Of a character in a switching converter '' or `` pass-by-value '' or vice versa does it make physical to! Int in Java n't know the proper array length in advance asking for help, clarification, or to! Byte [ ] stat = new char [ 256 ] ; it is used to encode the.... To ensure you have the best browsing experience on our website terms and privacy policy to Post a.. In 2022, the byte [ ] and returning a CharSequence suffices: Create a class MyCharSequence holding the to. Into your RSS reader multiple ways trademarks and registered trademarks appearing on Java Code Geeks is not by... Reason for visarga turning to [ o ] in sandhi, help piece.

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convert byte to character java