Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import org.w3c.dom.NodeList;

public class Main {
    public static Element getRoot(String path) {
        return getRoot(new File(path));
    }

    public static Element getRoot(File file) {
        return getRoot(loadXMLDocument(file));
    }

    public static Element getRoot(Document document) {
        return getRoot(document, "root");
    }

    public static Element getRoot(Document document, String root) {
        if (document == null) {
            throw new IllegalArgumentException("Null document");
        }

        NodeList nodeList = document.getElementsByTagName(root);
        return nodeList.item(0) != null ? (Element) nodeList.item(0) : null;
    }

    public static Document loadXMLDocument(String path) {
        return loadXMLDocument(new File(path));
    }

    public static Document loadXMLDocument(File file) {
        try {
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            Document document = builder.parse(file);
            return document;
        } catch (Exception ex) {
            return null;
        }
    }
}