document: XJ : facilitating XML processing in Java The increased importance of XML as a data representation format has led to several proposals for facilitating the development of applications that operate on XML data . These proposals range from runtime API-based interfaces to XML-based programming languages . The subject of this paper is XJ , a research language that proposes novel mechanisms for the integration of XML as a first-class construct into Java ™ . The design goals of XJ distinguish it from past work on integrating XML support into programming languages -- specifically , the XJ design adheres to the XML Schema and XPath standards . Moreover , it supports in-place updates of XML data thereby keeping with the imperative nature of Java . We have built a prototype compiler for XJ , and our preliminary experiments demonstrate that the performance of XJ programs can approach that of traditional low-level API-based interfaces , while providing a higher level of abstraction .
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