ADDITIONAL SYSTEM INFORMATION :
Windows 10 64bit, JDK 10.0.1

A DESCRIPTION OF THE PROBLEM :
I use RMI Registry to bind a Remote Object, but failed.

That remote object include a method which has a Java.sql.Timestamp parameter :
String sayHello(java.sql.Timestamp aTime) throws RemoteException;

If use java.util.Date, it would work fine!!!!!!!!

The stacktrace:

java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)
Server exception: java.rmi.ServerError: Error occurred in server thread; nested exception is:
        java.lang.NoClassDefFoundError: java/sql/Connection
java.rmi.ServerError: Error occurred in server thread; nested exception is:
        java.lang.NoClassDefFoundError: java/sql/Connection
        at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:388)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:844)
        at java.rmi/sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:283)
        at java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:260)
        at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:375)
        at java.rmi/sun.rmi.registry.RegistryImpl_Stub.bind(RegistryImpl_Stub.java:68)
        at excelhk.objbus.testRMISrv.main(testRMISrv.java:27)
Caused by: java.lang.NoClassDefFoundError: java/sql/Connection
        at java.base/java.lang.Class.getDeclaredMethods0(Native Method)
        at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3119)
        at java.base/java.lang.Class.privateGetPublicMethods(Class.java:3144)
        at java.base/java.lang.Class.getMethods(Class.java:1863)
        at java.base/java.lang.reflect.Proxy$ProxyBuilder.lambda$referencedTypes$3(Proxy.java:712)
        at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:271)
        at java.base/java.util.Collections$2.tryAdvance(Collections.java:4727)
        at java.base/java.util.Collections$2.forEachRemaining(Collections.java:4735)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
        at java.base/java.lang.reflect.Proxy$ProxyBuilder.referencedTypes(Proxy.java:717)
        at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:625)
        at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:636)
        at java.base/java.lang.reflect.Proxy.lambda$getProxyConstructor$0(Proxy.java:415)
        at java.base/jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:
        at java.base/jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.ja
        at java.base/java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:413)
        at java.base/java.lang.reflect.Proxy.getProxyClass(Proxy.java:384)
        at java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:699)
        at java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:688)
        at java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:611)
        at java.rmi/java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
        at java.rmi/java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
        at java.rmi/sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:254)
        at java.base/java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1809)
        at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1760)
        at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2051)
        at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1585)
        at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:422)
        at java.rmi/sun.rmi.registry.RegistryImpl_Skel.dispatch(RegistryImpl_Skel.java:76)
        at java.rmi/sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:467)
        at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:297)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.lang.ClassNotFoundException: java.sql.Connection
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:566)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
        ... 47 more


 

REGRESSION : Last worked in version 10.0.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Interface：
public interface testRMI extends Remote {
String sayHello(java.sql.Timestamp aTime) throws RemoteException;
}

RMI Server

public class testRMISrv implements testRMI {
public testRMISrv() {}

public String sayHello(java.sql.Timestamp aTime) throws RemoteException {
        return "Hello, world!" + aTime.toString();
    }
        
    public static void main(String args[]) {
        
        try {
         testRMISrv obj = new testRMISrv();
            testRMI stub = (testRMI) UnicastRemoteObject.exportObject(obj, 0);

            Registry registry = LocateRegistry.getRegistry();
            registry.bind("Hello", stub);

            System.err.println("Server ready");
        } catch (Exception e) {
            System.err.println("Server exception: " + e.toString());
            e.printStackTrace();
        }
    }
    

}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Bind successfully
ACTUAL -
Failed, and said java.sql.Timestamp can't be found. Actually, I use java.util.Date to replace that parameter, it worked find!!!!!

FREQUENCY : always