怎样解决xml的解析中无法解析问题

[待解决问题]

代码：package org.gyj.xml.dom;
import java
import org.w3c.dom.*;
import javax.xml.parsers.*;
public class DOMDEMO
{
public static void main( String args[] ){
             DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance( );
             DocumentBuilder build=factory.newDocumentBuilder();
    Document doc=build.parse(new File("c:"+ File serparator +"DOM.xml"));
    NodeList n1=new.getElementsByTagname("name");
    System.out.println("姓名"+n1.item(0).getFirstchild().getNodevalue());
}
}

<?xml version="1.0" encoding="GBK" ?>
<addresslist>
<name>高玉杰</name>
</addresslist>

在EditPLUS中设计此程序，但是通过cmd运行、时找不到！！！！是怎么回事！真心请教！！

java