jdk/test/javax/management/remote/mandatory/loading/DefaultProviderTest.java

/*
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 4884913
 * @summary Tests that default protocols are loaded correctly
 * @author Eamonn McManus
 *
 * @run clean DefaultProviderTest
 * @run build DefaultProviderTest
 * @run main DefaultProviderTest
 */

import java.net.*;
import java.util.*;
import javax.management.remote.*;

/**
 * Create an environment where the providers for the default protocols
 * (e.g. rmi) are not visible to the loader that is used to load
 * non-default providers.  Check that we can load the default
 * protocols nevertheless.
 *
 * If JMX Remote is part of J2SE, this test becomes meaningless,
 * because the default protocol providers are visible to the bootstrap
 * class loader.
 */
public class DefaultProviderTest {
    public static void main(String[] args) throws Exception {
        URLClassLoader emptyLoader = new URLClassLoader(new URL[0], null);
        Thread.currentThread().setContextClassLoader(emptyLoader);
        Map env = new HashMap();
        env.put(JMXConnectorFactory.PROTOCOL_PROVIDER_CLASS_LOADER,
                emptyLoader);
        JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///bogus");
        JMXConnector conn = JMXConnectorFactory.newJMXConnector(url, env);
        System.out.println("Successfully created RMI connector in hostile " +
                           "class-loading environment");
    }
}