They feed the content of the document to the application as soon as they see it, whether the application is ready to receive that data or not.SAX and XNI are fast and efficient, but the patterns they require programmers to adopt are unfamiliar and uncomfortable to many developers.Thus tree APIs are normally not practical for documents larger than a few megabytes in size or in memory constrained environments such as J2ME.In these situations, a streaming API such as SAX or XNI is normally preferred. They can start generating output from the input almost immediately, without waiting for the entire document to be read.Most programmers find the tree-based APIs to be easier to use; but such APIs are less efficient, especially with respect to memory usage.An in-memory tree tends to be several times larger than the document it models.Es kann mehrere Unterelemente geben, aber nur genau ein Root-Element.Die Elemente knnen Attribute und/oder Inhalte enthalten.
September 17, 2003 Elliotte Rusty Harold Most current XML APIs fall into one of two broad classes: event-based APIs like SAX and XNI or tree-based APIs like DOM and JDOM.
XML 1.0 wurde Anfang 1998 vom W3C als Standard verabschiedet.
Eine einfache XML-Datei kann zum Beispiel so aussehen: " gekennzeichneten "PI" (Processing Instruction), die Hinweise zur Verarbeitung enthlt.
Woodstox 5 and above require Java 6 (JDK 1.6); as well as Stax API that is included in JDK.
The only other mandatory dependence is Stax2 API, extended API implemented by Woodstox and some other Stax implementations (like Aalto.