NullClassLoader.java

/*
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/* @test
 * @bug 4227192
 * @summary This test verifies that a proxy class can be created with
 * (and defined in) the null class loader.
 * @author Peter Jones
 *
 * @build NullClassLoader
 * @run main NullClassLoader
 */

import java.lang.reflect.*;
import java.util.Observer;

public class NullClassLoader {

    public static void main(String[] args) {

        System.err.println(
            "\nTest creating proxy class with the null class loader.\n");

        try {
            Class p = Proxy.getProxyClass(null,
                new Class[] { Runnable.class, Observer.class });
            System.err.println("proxy class: " + p);

            ClassLoader loader = p.getClassLoader();
            System.err.println("proxy class's class loader: " + loader);

            if (loader != null) {
                throw new RuntimeException(
                    "proxy class not defined in the null class loader");
            }

            System.err.println("\nTEST PASSED");

        } catch (Throwable e) {
            System.err.println("\nTEST FAILED:");
            e.printStackTrace();
            throw new RuntimeException("TEST FAILED: " + e.toString());
        }
    }
}