Java Xml Libraries
本文描述了当前主流的Java Xml libraries，以及对比区别。
SAX: It is an event based parsing API, it provides a low level access, is memory efficient and faster than DOM since it doesn’t load the whole document tree in memory but it doesn’t provide support for navigation like the one provided by XPath, although it is more efficient it is harder to use too.
DOM(DOM4J and JDOM): It as model based parser that loads a tree structure document in memory, so we have the original elements order, we can navigate our document both directions, it provides an API for reading and writing, it offers XML manipulation and it is very easy to use although the price is high strain on memory resources.
StAX: It offers the ease of DOM and the efficiency of SAX but it lacks of some functionality provided by DOM like XML manipulation and it only allows us to navigate the document forward.
JAXB: It allows us to navigate the document in both directions, it is more efficient than DOM, it allows conversion from XML to java types and it supports XML manipulation but it can only parse a valid XML document.
