Java DOM解析器 - 查询XML文档

这是需要我们查询的输入XML文件：

<?xml version="1.0"?>

<cars>

<supercars company="Ferrari">

<carname type="formula one">Ferarri 101</carname>

<carname type="sports car">Ferarri 201</carname>

<carname type="sports car">Ferarri 301</carname>

</supercars>

<supercars company="Lamborgini">

<carname>Lamborgini 001</carname>

<carname>Lamborgini 002</carname>

<carname>Lamborgini 003</carname>

</supercars>

<luxurycars company="Benteley">

<carname>Benteley 1</carname>

<carname>Benteley 2</carname>

<carname>Benteley 3</carname>

</luxurycars>

</cars>

演示示例：

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