Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/* Copyright (c) 2016 by crossmobile.org
 *
 * CrossMobile is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2.
 *
 * CrossMobile is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with CrossMobile; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.w3c.dom.Attr;

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

public class Main {
    public static Node getNodeWithKey(Node parent, String key, String value) {
        HashSet<String> values = new HashSet<>();
        values.add(value);
        List<Node> nodes = getNodesWithKey(parent, key, values, false);
        if (nodes.size() < 1)
            return null;
        return nodes.get(0);
    }

    public static List<Node> getNodesWithKey(Node parent, String key, String value, boolean all_of_them) {
        HashSet<String> values = new HashSet<>();
        values.add(value);
        return getNodesWithKey(parent, key, values, all_of_them);
    }

    public static List<Node> getNodesWithKey(Node parent, String key, Set<String> values, boolean all_of_them) {
        ArrayList<Node> valid = new ArrayList<>();
        NodeList children = parent.getChildNodes();
        Node current;
        for (int i = 0; i < children.getLength(); i++) {
            current = children.item(i);
            NamedNodeMap attrs = current.getAttributes();
            if (attrs != null) {
                Node keynode = attrs.getNamedItem(key);
                if (keynode != null)
                    if (values == null || values.contains(keynode.getNodeValue())) {
                        valid.add(current);
                        if (!all_of_them)
                            break;
                    }
            }
        }
        return valid;
    }

    public static Map<String, String> getAttributes(Node n) {
        if (n == null)
            return null;
        NamedNodeMap attributes = n.getAttributes();
        if (attributes == null || attributes.getLength() <= 0)
            return null;

        Map<String, String> result = new HashMap<>();
        for (int i = 0; i < attributes.getLength(); i++) {
            Attr attr = (Attr) attributes.item(i);
            result.put(attr.getNodeName(), attr.getNodeValue());
        }
        return result;
    }
}