Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright (C) 2014-2015 Philip Helger (www.helger.com)
 * philip[at]helger[dot]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 javax.annotation.Nonnegative;

import javax.annotation.Nullable;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;

public class Main {
    /**
     * Get the content of the first Text child element of the passed element.
     *
     * @param aStartNode
     *        the element to scan for a TextNode child
     * @return <code>null</code> if the element contains no text node as child
     */
    @Nullable
    public static String getFirstChildText(@Nullable final Node aStartNode) {
        if (aStartNode != null) {
            final NodeList aNodeList = aStartNode.getChildNodes();
            final int nLen = aNodeList.getLength();
            for (int i = 0; i < nLen; ++i) {
                final Node aNode = aNodeList.item(i);
                if (aNode instanceof Text) {
                    final Text aText = (Text) aNode;

                    // ignore whitespace-only content
                    if (!aText.isElementContentWhitespace())
                        return aText.getData();
                }
            }
        }
        return null;
    }

    @Nonnegative
    public static int getLength(@Nullable final NodeList aNL) {
        return aNL == null ? 0 : aNL.getLength();
    }
}