JDK (Java Development Kit) Tutorials

∟Character Set Encoding Maps

∟Character Set Encoding Maps - US-ASCII and ISO-8859-1/Latin 1

This section provides a tutorial example of analyzing and printing character set encoding maps for 2 encodings: US-ASCII and ISO-8859-1/Latin 1.

Here is the output of my sample program, EncodingAnalyzer.java, for US-ASCII encoding:

Code Point > Byte Sequence - Code Point > Byte Sequence

0000 > 00 - 007F > 7F
0080 > 3F - FFFF > 3F

The encoding map of US-ASCII is very simple:

• The encoded byte sequence is one byte only, taking the lower value byte of the code point.
• Valid code points only in the 0x0000 - 0x007F range.

Here is the output of my sample program, EncodingAnalyzer.java, for ISO-8859-1/Latin 1 encoding:

Code Point > Byte Sequence - Code Point > Byte Sequence

0000 > 00 - 00FF > FF
0100 > 3F - FFFF > 3F

The encoding map of ISO-8859-1/Latin 1 is also very simple:

• The encoded byte sequence is one byte only, taking the lower value byte of the code point.
• Valid code points only in the 0x0000 - 0x00FF range, full range of the lower value byte.

Last update: 2006.

Table of Contents

 About This JDK Tutorial Book

 Downloading and Installing JDK 1.3.1 on Windows

 Downloading and Installing JDK 1.4.1 on Windows

 Downloading and Installing JDK 1.5.0 on Windows

 Downloading and Installing JDK 1.6.2 on Windows

 Date, Time and Calendar Classes

 Date and Time Object and String Conversion

 Number Object and Numeric String Conversion

 Locales, Localization Methods and Resource Bundles

 Calling and Importing Classes Defined in Unnamed Packages

 HashSet, Vector, HashMap and Collection Classes

 Character Set Encoding Classes and Methods

►Character Set Encoding Maps

 Character Set Encoding Map Analyzer

►Character Set Encoding Maps - US-ASCII and ISO-8859-1/Latin 1

 Character Set Encoding Maps - CP1252/Windows-1252

 Character Set Encoding Maps - Unicode UTF-8

 Character Set Encoding Maps - Unicode UTF-16, UTF-16LE, UTF-16BE

 Character Counter Program for Any Given Encoding

 Character Set Encoding Comparison

 Encoding Conversion Programs for Encoded Text Files

 Socket Network Communication

 Datagram Network Communication

 DOM (Document Object Model) - API for XML Files

 SAX (Simple API for XML)

 DTD (Document Type Definition) - XML Validation

 XSD (XML Schema Definition) - XML Validation

 XSL (Extensible Stylesheet Language)

 Message Digest Algorithm Implementations in JDK

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Digital Signature Algorithm and Sample Program

 "keytool" Commands and "keystore" Files

 KeyStore and Certificate Classes

 Secret Key Generation and Management

 Cipher - Secret Key Encryption and Decryption

 The SSL (Secure Socket Layer) Protocol

 SSL Socket Communication Testing Programs

 SSL Client Authentication

 HTTPS (Hypertext Transfer Protocol Secure)

 References

 PDF Printing Version