java代码。利用Dom解析器对ＸＭＬ文件进行解析，得到节点及子节点的Key和Value-r XML file system, get node and child nodes of the Key and the VJava code. Use of Dom parsealue mples

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用Java编写的二叉树的数据结构，包括二叉树的每个节点的值，以及各子树的指针。 -Written in Java binary tree data structure, including the value of each node of a binary tree, and each sub-tree pointer.