Java generates and parses instance code for XML format files and strings
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Java
1. Basics: there are generally four methods for parsing XML in Java: DOM, sax, JDOM and Dom4j.
2. Introduction to DOM (1)
The interface provided by W3C (org. W3C. DOM) reads the entire XML document into memory and constructs a DOM tree to operate each node. The advantage is that the whole document is always in memory, we can access any node at any time, and the traversal of the tree is also a familiar operation; The disadvantage is that it consumes memory and must wait until all documents are read into memory before processing.
(2) Example code:
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