We recommend you see the examples in the following order. After trying these examples out, you should be able to build reasonably complex examples yourself. They highlight the use of lexical states. JavaGrammars: This directory contains extremely well debugged and maintained Java grammars for both the 1.

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The Java Tutorials are practical guides for programmers who want to use the Java programming language to create applications. They include hundreds of complete, working examples, and dozens of lessons.

Groups of related lessons are organized into "trails". To buy this book, refer to the box to the right. Getting Started — An introduction to Java technology and lessons on installing Java development software and using it to create a simple program.

Collections — Lessons on using and extending the Java Collections Framework. Preparation for Java Programming Language Certification — List of available training and tutorial resources. Specialized Trails and Lessons These trails and lessons are only available as web pages.

Generics — An enhancement to the type system that supports operations on objects of various types while providing compile-time type safety. Note that this lesson is for advanced users.

The Java Language trail contains a Generics lesson that is suitable for beginners. Internationalization — An introduction to designing software so that it can be easily adapted localized to various languages and regions. JMX — Java Management Extensions provides a standard way of managing resources such as applications, devices, and services. Security — Java platform features that help protect applications from malicious software.

Sound — An API for playing sound data from applications.


Using JavaCC

The Token Manager What is a token manager? In conventional compiler terminology, a token manager is a lexical analyzer. The token manager analyzes the input stream of characters, breaking it up into chunks called tokens and assigning each token a type. The sequence is usually sent on to a parser for further processing. Can I read from a String instead of a file?


JavaCC Parser Generator Integration Tutorial for the NetBeans Platform

This allows the use of more general grammars, although left-recursion is disallowed. Top-down parsers have a number of other advantages besides more general grammars such as being easier to debug, having the ability to parse to any non-terminal in the grammar, and also having the ability to pass values attributes both up and down the parse tree during parsing. However, there may be portions of grammar that are not LL 1. JavaCC offers the capabilities of syntactic and semantic lookahead to resolve shift-shift ambiguities locally at these points. For example, the parser is LL k only at such points, but remains LL 1 everywhere else for better performance. Shift-reduce and reduce-reduce conflicts are not an issue for top-down parsers.

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