Some Popular SAX2 Parser Distributions
Today a variety of high-quality SAX2 parsers are available. Increasingly, they are packaged with Java programming environments, so you may not need to fetch one yourself unless you need upgrades (or bug fixes), or are constructing such a programming environment yourself (perhaps packaging an embedded system or a standalone application). You should be able to bootstrap any SAX parser. As a rule, if an XML parser is part of your Java programming environment, it already supports SAX and probably SAX2. The documentation should say whether SAX2 is supported. If it only mentions SAX1, you can upgrade to get most of the core SAX2 features; see Section 5.2, in Chapter 5, for more information.
If your programming environment doesn’t include a SAX parser, you’ll need to get and install one. This section provides a brief summary of some of the most widely available open source SAX2 parsers.[5] These packages all include SAX2, DOM Level 2, and JAXP 1.1 support, and can validate XML for you. They also have full support for the standard SAX2 extensions. If you don’t happen to download documentation that includes the SAX2 documentation, it’ll be available from the same site as the parser. All of these perform well in most applications, as long as you avoid the memory penalties of DOM.
Current versions of all these parsers do quite well on the open source SAX/XML conformance tests, available at http://xmlconf.sourceforge.net/java/. Those tests verify that ...
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