Java Resource Path Get resourceExists(String path)

Description

resource Exists

License

Open Source License

Declaration

public static boolean resourceExists(String path) 

Method Source Code

//package com.java2s;
/*/*from ww w .j ava2  s .co m*/
 * RED: RNA Editing Detector
 *     Copyright (C) <2014>  <Xing Li>
 *
 *     RED 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, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     RED 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class Main {
    public static boolean resourceExists(String path) {
        if (isRemote(path)) {
            try {
                URL url = createURL(path);
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                int code = conn.getResponseCode();
                return code >= 200 && code < 300;
            } catch (IOException e) {
                return false;
            }
        } else {
            return (new File(path)).exists();
        }
    }

    public static boolean isRemote(String path) {
        return path != null
                && (path.startsWith("http://") || path.startsWith("https://") || path.startsWith("ftp://"));
    }

    public static URL createURL(String url) {
        try {
            return new URL(url);
        } catch (MalformedURLException e) {
            e.printStackTrace();
            return null;
        }
    }
}

Related

1. getStringFromResource(Class clazz, String path)
2. getSystemResource(String path)
3. getSystemResource(String path)
4. loadResource(final Class bundleClazz, final Class resourceTypeclazz, final String pathToFile)
5. loadResources(ClassLoader loader, String path)