Java Class Loader createClassLoader(String fileName)

Description

create Class Loader

License

Open Source License

Declaration

static public URLClassLoader createClassLoader(String fileName) 

Method Source Code

//package com.java2s;
/**//from  www.j a  v  a  2s  .  c  o m
 * This file is part of Spritnesse.
 * <p/>
 * This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3.0 of the License, or (at your option) any later version.
 * <p/>
 * This library 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 Lesser General Public License for more details.
 * <p/>
 * You should have received a copy of the GNU Lesser General Public License along with this library.
 * <p/>
 * Copyright (c) 2014, Andrew Oxenburgh, All rights reserved.
 */

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

public class Main {
    static public URLClassLoader createClassLoader(String fileName) {
        String urlPath = makeUrlPath(fileName);
        URL url = null;
        try {
            url = new URL(urlPath);
        } catch (MalformedURLException e) {
            throw new RuntimeException(e);
        }
        URLClassLoader loader = URLClassLoader.newInstance(new URL[] { url });

        return loader;
    }

    static private String makeUrlPath(String fileName) {
        String path = new File(".").getAbsolutePath();
        path = path.substring(0, path.length() - 2);
        return "file:///" + path + "/" + fileName;
    }
}

Related

1. addDirectoryToClassLoader(ClassLoader loader, File directory)
2. addFileToSystemClassLoader(String s)
3. createClassloader(File libDir, ClassLoader cl)
4. createClassLoader(File root)
5. createClassLoader(final String[] cpEntries)
6. createFallbackClassLoader(Collection files)
7. dumpClassLoader(ClassLoader cl, PrintWriter out)
8. getClass(Object classLoaderMakedObject, File file, String targetClass)
9. getClassInputStream(String className, ClassLoader cl)