test/jdk/java/lang/reflect/Proxy/nonPublicProxy/SimpleProxy.java

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import java.lang.reflect.*;
import java.security.*;
import java.util.Arrays;

/*
 * @test
 * @bug 8004260
 * @summary Test making a proxy instance that implements a non-public interface
 * @build p.Foo p.Bar
 * @run main/othervm SimpleProxy
 */
public class SimpleProxy {
    public static void main(String[] args) throws Exception {
        ClassLoader loader = SimpleProxy.class.getClassLoader();
        Class<?> fooClass = Class.forName("p.Foo");
        Class<?> barClass = Class.forName("p.Bar");

        makeProxy(loader, fooClass);
    }

    private static void makeProxy(ClassLoader loader, Class<?> cls) {
        Class<?>[] intfs = new Class<?>[] { cls };
        Proxy.newProxyInstance(loader, intfs, new InvocationHandler() {
            public Object invoke(Object proxy, Method method, Object[] args)
                    throws Throwable {
                Class<?>[] intfs = proxy.getClass().getInterfaces();
                System.out.println("Proxy for " + Arrays.toString(intfs)
                        + " " + method.getName() + " is being invoked");
                return null;
            }
        });
    }
}