jdk-24/test/jdk/java/rmi/server/RMIClassLoader/spi/DefaultProperty.java

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/* @test
 * @bug 4418673
 * @summary verify that setting the java.rmi.server.RMIClassLoaderSpi
 * system property to "default" causes the default provider instance to
 * be used by the RMIClassLoader API.
 * @author Peter Jones
 *
 * @library ../../../testlibrary
 * @modules java.rmi/java.rmi.server:+open
 *          java.rmi/sun.rmi.registry
 *          java.rmi/sun.rmi.server
 *          java.rmi/sun.rmi.transport
 *          java.rmi/sun.rmi.transport.tcp
 * @build TestLibrary ServiceConfiguration
 * @run main/othervm DefaultProperty
 */

import java.lang.reflect.Field;
import java.rmi.server.RMIClassLoader;
import java.rmi.server.RMIClassLoaderSpi;

public class DefaultProperty {

    public static void main(String[] args) throws Exception {

        ServiceConfiguration.installServiceConfigurationFile();

        System.setProperty(
            "java.rmi.server.RMIClassLoaderSpi", "default");

        // Force loading of RMIClassLoader, which will initialize the
        // provider instance.
        RMIClassLoaderSpi def = RMIClassLoader.getDefaultProviderInstance();

        Field fProvider = RMIClassLoader.class.getDeclaredField("provider");
        fProvider.setAccessible(true);
        RMIClassLoaderSpi actual = (RMIClassLoaderSpi) fProvider.get(null);

        if (def != actual) {
            System.err.println("TEST FAILED");
            System.err.println("default provider = " + def);
            System.err.println("actual provider = " + actual);
            throw new AssertionError("TEST FAILED");
        }

        System.err.println("TEST PASSED");
    }
}