56 lines
2.1 KiB
Java
56 lines
2.1 KiB
Java
/*
|
|
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code 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
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
import java.io.File;
|
|
import java.lang.reflect.Method;
|
|
import java.net.URL;
|
|
import java.net.URLClassLoader;
|
|
|
|
public class CustomLoaderApp {
|
|
private static String className = "LambHello";
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
String path = args[0];
|
|
URL url = new File(path).toURI().toURL();
|
|
URL[] urls = new URL[] {url};
|
|
System.out.println(path);
|
|
System.out.println(url);
|
|
|
|
URLClassLoader urlClassLoader =
|
|
new URLClassLoader("HelloClassLoader", urls, null);
|
|
Class c = Class.forName(className, true, urlClassLoader);
|
|
System.out.println(c);
|
|
System.out.println(c.getClassLoader());
|
|
Object o = c.newInstance();
|
|
|
|
if (c.getClassLoader() != urlClassLoader) {
|
|
throw new RuntimeException("c.getClassLoader() == " + c.getClassLoader() +
|
|
", expected == " + urlClassLoader);
|
|
}
|
|
|
|
Method method = c.getMethod("main", String[].class);
|
|
String[] params = null;
|
|
method.invoke(null, (Object)params);
|
|
}
|
|
}
|