在J2EE中,接受一个XML文档,返回document对象,以分析该XML文档,可以使用如下()方法获得document对象 
A、Document doc=DocumentBuilderFactory.parse(“my.xml”);
B、Document doc=DocumentBuilder.parse(“my.xml”);
C、DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance(); DocumentBuilder builder=dbf.newDocumentBuilder(); Document doc=builder.parse(“my.xml”);
D、DocumentBuilder builder=new DocumentBuilder(); Document doc=builder.parse(“my.xml”);