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Tutorial Addendum on Unicode - JDK - Encoding Maps

 ......8FC0 > E8 BF 80 - 8FFF > E8 BF BF9000 > E9 80 80 - 903F > E9 80 BF9040 > E9 81 80 - 907F > E9 81 BF9080 > E9 82 80 - 90BF > E9 82 BF......9FC0 > E9 BF 80 - 9FFF > E9 BF BFA000 > EA 80 80 - A03F > EA 80 BFA040 > EA 81 80 - A07F > EA 81 BFA080 > EA 82 80 - A0BF > EA 82 BF......AFC0 > EA BF 80 - AFFF > EA BF BFB000 > EB 80 80 - B03F > EB 80 BFB040 > EB 81 80 - B07F > EB 81 BFB080 > EB 82 80 - B0BF > EB 82 BF......BFC0 > EB BF 80 - BFFF > EB BF BFC000 > EC 80 80 - C03F > EC 80 BFC040 > EC 81 80 - C07F > EC 81 BFC080 > EC 82 80 - C0BF > EC 82 BF......CFC0 > EC BF 80 - CFFF > EC BF BFD000 > ED 80 80 - D03F > ED 80 BFD040 > ED 81 80 - D07F > ED 81 BFD080 > ED 82 80 - D0BF > ED 82 BF......D7C0 > ED 9F 80 - D7FF > ED 9F BFD800 > 3F - DFFF > 3FE000 > EE 80 80 - E03F > EE 80 BFE040 > EE 81 80 - E07F > EE 81 BFE080 > EE 82 80 - E0BF > EE 82 BF......EFC0 > EE BF 80 - EFFF > EE BF BFF000 > EF 80 80 - F03F > EF 80 BFF040 > EF 81 80 - F07F > EF 81 BFF080 > EF 82 80 - F0BF > EF 82 BF......FFC0 > ... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding Maps

 ISO-8859-1 - Latin 1ISO-8859-1 encoding: Code CodePoint Point 0000 > 00 - 00FF > FF0100 > 3F - FFFF > 3FThis is aswell a actual simple map.The encoded byte arrangement is one byte only, demography the lower amount byte of the cipher point. Valid cipher credibility alone in the 0x0000 - 0x00FF range, abounding ambit of thelower amount byte.CP1252 - Windows-1252CP1252 encoding: Code CodePoint Point 0000 > 00 - 007F > 7F0080 > 3F - 009F > 3F00A0 > A0 - 00FF > FF0100 > 3F - 0151 > 3F0152 > 8C - 0152 > 8C0153 > 9C - 0153 > 9C0154 > 3F - 015F > 3F0160 > 8A - 0160 > 8A0161 > 9A - 0161 > 9A0162 > 3F - 0177 > 3F0178 > 9F - 0178 > 9F0179 > 3F - 017C > 3F017D > 8E - 017D > 8E017E > 9E - 017E > 9E017F > 3F - 0191 > 3F0192 > 83 - 0192 > 830193 > 3F - 02C5 > 3F02C6 > 88 - 02C6 > 8802C7 > 3F - 02DB > 3F02DC > 98 - 02DC > 9802DD > 3F - 2012 > 3F2013 > 96 - 2014 > 972015 > 3F - 2017 > 3F2018 > 91 - 2019 > 92201A > 82 - 201A > 82201B > 3F - 201B > 3F201C > 93 - 201D > 94201E > 84 - 201E > 84201F > 3F - ... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding Maps

 Notes and sample codes bark are based on J2SDK 1.4.1_01.Encoding Map AnalyzerAs mentioned in my additional note, "Character Set and Encoding", J2SDK 1.4.1_01for Windows 2000 provides 48 build-in encodings. I accept the afterward program to assay a accustomed encoding and book a map amid the cipher credibility (from 0x0000 to 0xFFFF) and the encodedbyte sequences: /** * EncodingAnalyzer.java * Absorb (c) 2002 by Dr. Yang */import java.io.*;class EncodingAnalyzer { changeless burn hexDigit = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , A , B , C , D , E , F }; accessible changeless abandoned main(String a) { Cord charset = null; if (a.length>0) charset = a; if (charset==null) System.out.println("Default encoding:"); abroad System.out.println(charset+" encoding:"); int lastByte = 0; int lastLength = 0; byte startSequence = null; burn startChar = 0; byte endSequence = null; burn endChar = 0; boolean isFirstChar = true; for (int i=0; i<0x010000; i++) { burn c = (char) i; Cord s = String.val... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding Map Counts

 accessible changeless byte encodeByEncoder(char c, Cord cs) { Charset cso = null; byte b = null; try { cso = Charset.forName(cs); CharsetEncoder e = cso.newEncoder(); e.reset(); ByteBuffer bb = e.encode(CharBuffer.wrap(new char {c})); if (bb.limit()>0) b = copyBytes(bb.array(),bb.limit()); } bolt (IllegalCharsetNameException e) { System.out.println(e.toString()); } bolt (CharacterCodingException e) { // invalid character, acknowledgment null } acknowledgment b; } accessible changeless abandoned printBytes(byte b) { if (b!=null) { for (int j=0; j<b.length; j++) System.out.print(" "+byteToHex(b)); } abroad { System.out.print(" XX"); } } accessible changeless byte copyBytes(byte a, int l) { byte b = new byte; for (int i=0; i<Math.min(l,a.length); i++) b = a; acknowledgment b; } accessible changeless Cord byteToHex(byte b) { char a = { hexDigit, hexDigit }; acknowledgment new String(a); } accessible changeless Cord charToHex(char c) { byte hi = (byte) (c >>> 8); byte lo = (byte) ... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding Map Counts

 Notes and sample codes bark are based on J2SDK 1.4.1_01.Encoding Map CounterAs mentioned in my additional note, "Character Set and Encoding", J2SDK 1.4.1_01for Windows 2000 provides 48 build-in encodings. I accept the afterward program to calculation the amount of mappable cipher credibility in the 0x0000 - 0xFFFF ambit for a accustomed encoding: /** * EncodingCounter.java * Absorb (c) 2002 by Dr. Yang */import java.io.*;import java.nio.*;import java.nio.charset.*;class EncodingCounter { changeless burn hexDigit[] = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , A , B , C , D , E , F }; accessible changeless abandoned main(String[] a) { Cord charset = "CP1252"; if (a.length>0) charset = a[0]; System.out.println(charset+" encoding:"); int lastByte = 0; int lastLength = 0; byte[] startSequence = null; burn startChar = 0; byte[] endSequence = null; burn endChar = 0; boolean isFirstChar = true; int validCount = 0; int subCount = 0; int totalCount = 0x010000; for (int i=0; i<totalCount; i++) ... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding About-face

 Unicode Signs in Altered EncodingsI capital to play with my account programs mentioned in this agenda one added time with this some Unicode signs. So I affected UnicodeHello.java and create UnicodeSign.java: /** * UnicodeSign.java * Absorb (c) 2002 by Dr. Yang * * This program is a simple apparatus to acquiesce you to access several curve of * text, and writh them into a book with of the defined encoding * (charset name). The ascribe argument curve uses Java cord convention, * which allows you to access ASCII characters directly, and any non * ASCII characters with escape sequences. * * This adaptation of the program is to address out some absorbing signs. */import java.io.*;class UnicodeSign { accessible changeless abandoned main(String[] a) { // The afterward Arrangement contains argument to be adored into the output // File. To access your own text, just alter this Array. String[] argument = {"U+005C(\)REVERSE SOLIDUS", //u005C is , cannot be entered directly"U+007E(u007E)TILDE","U+... Read More by user
Tags: program, capital, point, different, letter, signs, characters, write, small, latin, wrong, notes, string

Tutorial Addendum on Unicode - JDK - Encoding About-face

 Compile this program and use it to catechumen our accost bulletin book into several encodings: javac EncodingConverter.javajava EncodingConverter hello.utf-16be utf-16be hello.ascii asciijava EncodingConverter hello.utf-16be utf-16be hello.iso-8859-1 iso-...java EncodingConverter hello.utf-16be utf-16be hello.utf-8 utf-8java EncodingConverter hello.utf-16be utf-16be hello.gbk gbkjava EncodingConverter hello.utf-16be utf-16be hello.big5 big5java EncodingConverter hello.utf-16be utf-16be hello.shift_jis shift_jisBy celebratory the achievement files, you should apprehension this followings:hello.ascii - In this file, alone the English bulletin is good, because it contains alone ASCII characters. Both Simplified Chinese and Acceptable Chinese letters are not good. Characters in these letters are replaced by 0x3F, an indicationof invalid code.hello.iso-8859-1 - This is identical to hello.ascii, because there is no characters in the 0x80 - 0xFF range.hello.utf-8 - This book contains all lett... Read More by user

Tutorial Addendum on Unicode - JDK - Encoding About-face

 Since the argument book contains non-ASCII characters, we charge to catechumen it into Hexdecimal digits to be able analysis the cipher ethics of the adored characters. RememberUTF-16BE encoding break the cipher ethics into two bytes anon after any changes. Here is a program to catechumen any data book into Hex decimal digits: /** * HexWriter.java * Absorb (c) 2002 by Dr. Yang * This program allows you to catechumen and data book to a new data * in Hex architecture with 16 bytes (32 Hex digits) per line. */import java.io.*;class HexWriter { changeless burn hexDigit = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , A , B , C , D , E , F }; accessible changeless abandoned main(String a) { Cord inFile = a; Cord outFile = a; int bufSize = 16; byte absorber = new byte; Cord crlf = System.getProperty("line.separator"); try { FileInputStream in = new FileInputStream(inFile); OutputStreamWriter out = new OutputStreamWriter( new FileOutputStream(outFile)); int n = in.read(buffer,0,bufSize); Cord s =... Read More by user
Tags: program, system, characters, write, represents, public, string

Tutorial Addendum on Unicode - JDK - Encoding About-face

 Notes and sample codes bark are based on J2SDK 1.4.1_01.Unicode Data EntryEncoding about-face is about account characters stored in a book encoded withencoding A, and autograph them into addition book encoded with encoding B.Before traveling into data of encoding conversion, let s allocution briefly about Unicode data entry. How do we access Unicode characters into a file? There area brace of means to do that:Using encoding specific chat processors. Usually, one chat processor will allow you to access characters of a accurate language.Using Hex editors to access anon the byte sequences apery thedesired characters in a specific encoding.Using Unicode based programming accent to access the adapted characters as string literals.Word processors are too specific to be discussed here.Hex editors are ultimate data access accoutrement for Unicode characters. They can aswell be acclimated to audit and adjustment encoded argument files. But Hex editors are actual hardto use. Notepad on Windows i... Read More by user

Tutorial Addendum on Unicode - JDK - Appearance Set and Encoding

 Let s try an encoding that is advised for the Unicode appearance set, UTF-8: UTF-8 encoding:Char, String, Writer, Charset, Encoder0000, 00, 00, 00, 00003F, 3F, 3F, 3F, 3F0040, 40, 40, 40, 40007F, 7F, 7F, 7F, 7F0080, C2 80, C2 80, C2 80, C2 8000BF, C2 BF, C2 BF, C2 BF, C2 BF00C0, C3 80, C3 80, C3 80, C3 8000FF, C3 BF, C3 BF, C3 BF, C3 BF0100, C4 80, C4 80, C4 80, C4 803FFF, E3 BF BF, E3 BF BF, E3 BF BF, E3 BF BF4000, E4 80 80, E4 80 80, E4 80 80, E4 80 807FFF, E7 BF BF, E7 BF BF, E7 BF BF, E7 BF BF8000, E8 80 80, E8 80 80, E8 80 80, E8 80 80BFFF, EB BF BF, EB BF BF, EB BF BF, EB BF BFC000, EC 80 80, EC 80 80, EC 80 80, EC 80 80EFFF, EE BF BF, EE BF BF, EE BF BF, EE BF BFF000, EF 80 80, EF 80 80, EF 80 80, EF 80 80FFFF, EF BF BF, EF BF BF, EF BF BF, EF BF BFUTF-8 generates assorted bytes sequences, starting with one byte (8 bits).Let s try addition Unicode accompanying encoding, UTF-16: UTF-16 encoding:Char, String, Writer, Charset, Encoder0000, FE FF 00 00, FE FF 00 00, FE FF 00 00, FE ... Read More by user
Tags: methods, character, writer, notes, string

Tutorial Addendum on Unicode - JDK - Appearance Set and Encoding

 Note that:If the aforementioned encoding is used, anniversary of the encode adjustment in the program should return the absolutely the aforementioned byte sequence.getEncoding() is acclimated on OuputStreamWriter chic to get the name of the defaultencoding.There is now way to understand the name of the absence encoding on Cord class.There is no absence instance of Charset and Encoder.In encodeByEncoder(), 0x00 is acclimated as the achievement if the accustomed charactercan not be encoded by the encoder.Running this program after any altercation will use the JVM s absence encoding: Default (Cp1252) encoding:Char, String, Writer, Charset, Encoder0000, 00, 00, 00, 00003F, 3F, 3F, 3F, 3F0040, 40, 40, 40, 40007F, 7F, 7F, 7F, 7F0080, 3F, 3F, 3F, 0000BF, BF, BF, BF, BF00C0, C0, C0, C0, C000FF, FF, FF, FF, FF0100, 3F, 3F, 3F, 003FFF, 3F, 3F, 3F, 004000, 3F, 3F, 3F, 007FFF, 3F, 3F, 3F, 008000, 3F, 3F, 3F, 00BFFF, 3F, 3F, 3F, 00C000, 3F, 3F, 3F, 00EFFF, 3F, 3F, 3F, 00F000, 3F, 3F, 3F, 00FFFF, 3F... Read More by user

Tutorial Addendum on Unicode - JDK - Appearance Set and Encoding

 Methods to Encode CharactersThere are 4 methods to encode characters: CharsetEncoder.encode()Charset.encode()String.getBytes()OutputStreamWriter.write()Here is a program that authenticate how to encode characters in anniversary of the aloft 4 methods: /** * EncodingSampler.java * Absorb (c) 2002 by Dr. Yang */import java.io.*;import java.nio.*;import java.nio.charset.*;class EncodingSampler { changeless Cord dfltCharset = null; changeless char chars={0x0000, 0x003F, 0x0040, 0x007F, 0x0080, 0x00BF, 0x00C0, 0x00FF, 0x0100, 0x3FFF, 0x4000, 0x7FFF, 0x8000, 0xBFFF, 0xC000, 0xEFFF, 0xF000, 0xFFFF}; changeless burn hexDigit = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , A , B , C , D , E , F }; accessible changeless abandoned main(String arg) { Cord charset = null; if (arg.length>0) charset = arg; OutputStreamWriter o = new OutputStreamWriter( new ByteArrayOutputStream()); dfltCharset = o.getEncoding(); if (charset==null) System.out.println("Default ("+dfltCharset +") encoding:"); abroad System.... Read More by user

Tutorial Addendum on Unicode - JDK - Appearance Set and Encoding

 Notes and sample codes bark are based on J2SDK 1.4.1_01.What is a Appearance EncodingCharacter Encoding: A map arrangement amid cipher credibility of a cipher appearance set and sequences of bytes. Coded Appearance Set: A appearance set in which anniversary appearance has anassigned basic number. Code Point: An basic amount assigned to a appearance in a coded appearance set.Unicode: A coded appearance set that contains all characters acclimated in the accounting languages of the apple and appropriate symbols. As of 1.4.1, J2SDK supports Unicode 3.0, based on the advice provided in the advertence certificate of java.lang.Character class.I am not how JDK is traveling to abutment Unicode 3.1, because it now contains characters with cipher credibility greater than U+FFFF, which is the best amount of burn blazon in Java. Because of the burn limitation, JDK can alone abutment encoding and adaptation cipher pointsin the 16-bit range: U+0000 - U+FFFF. Supported Appearance EncodingsJDK uses the... Read More by user

 

 

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