Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2009 Teleca Poland Sp. z o.o. <android@teleca.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class Main {
    /**
     * singleton
     */
    private static DocumentBuilderFactory documentBuilderFactory = null;

    /**
     * Converts String containing XML code to Document
     * 
     * @param xmlString
     * @return <code>Document</code> interface
     */
    public static Document stringToDocument(String xmlString) {
        if (xmlString == null)
            return null;

        DocumentBuilder documentBuilder = getDocumentBuilder();
        InputSource inputSource = new InputSource(new StringReader(xmlString));
        try {
            return documentBuilder.parse(inputSource);
        } catch (SAXException e) {
            e.printStackTrace();
            return null;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * DocumentBuilder instance
     * 
     * @return
     */
    private static DocumentBuilder getDocumentBuilder() {
        try {
            return getDocumentBuilderFactory().newDocumentBuilder();
        } catch (ParserConfigurationException e) {
            return null;
        }
    }

    /**
     * DocumentBuilderFactory instance (lazy initialization)
     * 
     * @return
     */
    private static DocumentBuilderFactory getDocumentBuilderFactory() {
        if (documentBuilderFactory == null) {
            documentBuilderFactory = DocumentBuilderFactory.newInstance();
        }
        return documentBuilderFactory;
    }
}