Lexical Conventions in Java

Printer Code 3 of 9 in Java Lexical Conventions
31 Lexical Conventions
Encoding Code39 In Java
Using Barcode creation for Java Control to generate, create Code 39 image in Java applications.
At the most fundamental level, a PDF le is a sequence of 8-bit bytes These bytes can be grouped into tokens according to the syntax rules described below One or more tokens are then assembled to form higher-level syntactic entities, principally objects, which are the basic data values from which a PDF document is constructed PDF can be entirely represented using byte values corresponding to the visible printable subset of the ASCII character set, plus characters that appear as white space, such as space, tab, carriage return, and line feed characters ASCII is the American Standard Code for Information Interchange, a widely used convention
Drawing Bar Code In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
S E CTIO N 3 1
Barcode Decoder In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Lexical Conventions
Code 3 Of 9 Printer In Visual C#.NET
Using Barcode maker for .NET Control to generate, create Code39 image in .NET applications.
for encoding a speci c set of 128 characters as binary numbers However, a PDF le is not restricted to the ASCII character set; it can contain arbitrary 8-bit bytes, subject to the following considerations:
Code 3 Of 9 Printer In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create ANSI/AIM Code 39 image in ASP.NET applications.
The tokens that delimit objects and that describe the structure of a PDF le are
Paint Code39 In .NET Framework
Using Barcode printer for .NET Control to generate, create Code 39 Full ASCII image in .NET framework applications.
all written in the ASCII character set, as are all the reserved words and the names used as keys in standard dictionaries
Encoding Code 3 Of 9 In Visual Basic .NET
Using Barcode maker for .NET framework Control to generate, create USS Code 39 image in .NET applications.
The data values of certain types of object strings and streams can be but
Code-39 Drawer In Java
Using Barcode creation for Java Control to generate, create Code 39 image in Java applications.
need not be written entirely in ASCII For the purpose of exposition (as in this book), ASCII representation is preferred However, in actual practice, data that is naturally binary, such as sampled images, is represented directly in binary for the sake of compactness and ef ciency
Create UPC - 13 In Java
Using Barcode creation for Java Control to generate, create EAN 13 image in Java applications.
A PDF le containing binary data must be transported and stored by means
Painting ANSI/AIM Code 128 In Java
Using Barcode creator for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
that preserve all bytes of the le faithfully; that is, as a binary le rather than a text le Such a le is not portable to environments that impose reserved character codes, maximum line lengths, end-of-line conventions, or other restrictions Note: In this chapter, the term character is synonymous with byte and merely refers to a particular 8-bit value This is entirely independent of any logical meaning that the value may have when it is treated as data in speci c contexts, such as representing human-readable text or selecting a glyph from a font
Paint EAN / UCC - 13 In Java
Using Barcode encoder for Java Control to generate, create UCC.EAN - 128 image in Java applications.
311 Character Set
Draw Barcode In Java
Using Barcode creator for Java Control to generate, create barcode image in Java applications.
The PDF character set is divided into three classes, called regular, delimiter, and white-space characters This classi cation determines the grouping of characters into tokens, except within strings, streams, and comments; different rules apply in those contexts White-space characters (see Table 31) separate syntactic constructs such as names and numbers from each other All white-space characters are equivalent, except in comments, strings, and streams In all other contexts, PDF treats any sequence of consecutive white-space characters as if there were just one
UPC - E1 Generation In Java
Using Barcode maker for Java Control to generate, create UPC-E Supplement 2 image in Java applications.
CHA P TE R 3
Make DataMatrix In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create ECC200 image in ASP.NET applications.
Syntax
Decoding Barcode In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
TABLE 31 White-space characters
Print Bar Code In C#
Using Barcode drawer for VS .NET Control to generate, create barcode image in VS .NET applications.
DECIMAL HEXADECIMAL OCTAL NAME
Generate EAN13 In Visual Studio .NET
Using Barcode maker for .NET framework Control to generate, create EAN13 image in Visual Studio .NET applications.
0 9 10 12 13 32
Paint Code 128 Code Set A In Visual Studio .NET
Using Barcode generation for .NET Control to generate, create Code 128 image in .NET applications.
00 09 0A 0C 0D 20
Bar Code Creator In C#
Using Barcode printer for VS .NET Control to generate, create bar code image in VS .NET applications.
000 011 012 014 015 040
GTIN - 13 Reader In VS .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in VS .NET applications.
Null (NUL) Tab (HT) Line feed (LF) Form feed (FF) Carriage return (CR) Space (SP)
The carriage return (CR) and line feed (LF) characters, also called newline characters, are treated as end-of-line (EOL) markers The combination of a carriage return followed immediately by a line feed is treated as one EOL marker For the most part, EOL markers are treated the same as any other white-space characters However, there are certain instances in which an EOL marker is required or recommended that is, the following token must appear at the beginning of a line Note: The examples in this book illustrate a recommended convention for arranging tokens into lines However, the examples use of white space for indentation is purely for clarity of exposition and is not recommended for practical use The delimiter characters (, ), <, >, [, ], {, }, /, and % are special They delimit syntactic entities such as strings, arrays, names, and comments Any of these characters terminates the entity preceding it and is not included in the entity All characters besides the white-space characters and delimiters are referred to as regular characters These include 8-bit binary characters that are outside the ASCII character set A sequence of consecutive regular characters comprises a single token Note: PDF is case-sensitive; corresponding uppercase and lowercase letters are considered distinct