The detail member contains the original exception in Java

Draw Code 3 of 9 in Java The detail member contains the original exception
The detail member contains the original exception
Create Code 3 Of 9 In Java
Using Barcode drawer for Java Control to generate, create Code-39 image in Java applications.
It is not safe to retry a remote method which has incurred this exception, because you can't tell whether or not the method has executed It is probably also pointless to retry it, as it tends to indicate a software or configuration problem such as an non serializable or non loadable class A411 javarmiNoClassDefFoundError Note that this is an Error, not an Exception It usually follows a prior ClassNotFoundException, and often indicates a "stale" registry This condition can arise frequently during development: a remote interface and remote server are defined, compiled, and executed; the server is bound into the registry; the interface and server are modified; everything is recompiled and re executed; but the registry still has an old copy of the interface and stub The solution is to restart the registry This condition can manifest itself inside a ServerError See also the discussion of ClassNotFoundException in A46
Barcode Encoder In Java
Using Barcode encoder for Java Control to generate, create barcode image in Java applications.
A412 javarmiNoSuchObjectException This indicates that a remote method call has been attempted using a remote stub to a remote object which no longer exists in the remote virtual machine Such a reference is known as a "stale" reference The situation can occur if a remote stub has been obtained but never used for a long period, during which the remote object it refers to has been unexported If a network partition (router, bridge, gateway, etc) is present between a client and a remote server, it is possible for the server's end of the transport to believe incorrectly that the client has crashed In this event, DGC may execute prematurely, ie the Unreferencedunreferenced method may be called prematurely, which may lead to local unexporting and garbage collection of the server This exception can also occur if the remote object has been forcibly unexported As these actions are out of their control, RMI clients with retry semantics should generally be written so as to cope sensibly with this exception If this exception is thrown in a client attempting a remote method call, the call can be retransmitted while preserving "at most once" call semantics It is safe to retry an RMI call which gets this exception Before retrying, obviously the client should obtain a new remote stub for the remote object Whether the call succeeds on retry depends on whether the remote stub used for the call is valid at the time of the call, just as it did on the first attempt This exception can also be thrown by the javarmiserverRemoteObjecttoStub method, and by the various static unexportObject methods of the javarmiserverUnicastRemoteObject and javarmiactivationActivatable classes In these cases it indicates that the remote object is not currently exported, ie has never been exported or has already been unexported A413 javarmiNotBoundException This indicates that the name argument to a lookup or unbind method of Naming or Registry is not currently bound, ie that nothing in the registry matches name It is safe to retry an RMI call which gets this exception (but probably pointless unless a sleep and retry technique is used while waiting for a remote server to start up) A414 javarmiRemoteException This means that something unexpected happened in the communications or at the server end It indicates a failure in the RMI system or at the remote server Unfortunately, depending on the designer of the remote interface, it may also indicate an application exception condition This can arise if the designer used RemoteException, or classes derived from it, for exception conditions specific to the application Such a practice provides the designer with a lazy way of specifying the remote interface, as every method just needs to declare that it throws RemoteException, but it is poor RMI design Application exceptions should be declared separately from RemoteException, and should not extend it There are two reasons for this recommendation
Recognize Bar Code In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
1 The designer must not avoid thinking about what application exceptions need to exist 2 The client side of the application is much easier to code if application exceptions and RMI system exceptions are distinct In practice, RemoteException should rarely be caught explicitly Why not Because it is not thrown explicitly by the RMI system:[1] instead, one of the exceptions derived from it is thrown Each such exception should be caught and handled separately, as each indicates a different kind of remote problem Valid exceptions to this rule include the cases where RemoteException is caught for observation purposes and then rethrown, or where the application just completely gives up on any kind of remote error
Code 3 Of 9 Creator In Visual C#
Using Barcode encoder for .NET Control to generate, create Code 39 image in Visual Studio .NET applications.
except in the case of the corrupted stream described in A419, which you should never encounter A415 javarmiRMISecurityException This is thrown by the javarmiRMISecurityManager, the default security manager in JDK 11 environments, to indicate any security violation It is deprecated in, and not thrown by, JDK 12 environments A416 javalangSecurityException This indicates that the code was not granted a permission it required to execute See 8 A417 javarmiserverServerCloneException This exception is thrown if a remote exception occurs during cloning of a UnicastRemoteObject The detail member contains the original exception A418 javarmiServerError This means that the remote server got a javalangError executing the remote method It indicates a severe error in the server, either a Java system error, a critical resource shortage, or a coding error, such as an array subscript out of range The detail member contains the original exception This exception "wraps" an instance of javalangError inside an exception derived from javarmiRemoteException, so that it can be thrown by a remote method invocation within the rules of Java A419 javarmiServerException This means that the remote server got a RemoteException while executing the remote method The detail member contains the original exception A ServerException is thrown if the server encounters:
ANSI/AIM Code 39 Generation In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create ANSI/AIM Code 39 image in ASP.NET applications.
a SkeletonMismatchException while dispatching the call an UnmarshalException while decoding arguments
Code 3 Of 9 Drawer In VS .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Code 3 of 9 image in .NET applications.
a MarshalException while encoding the result any remote exception whatsoever while executing the call This includes the case where the server is doing a remote method invocation of its own, eg a daisy chained or forwarded call It also includes the case "method number out of range due to a corrupted stream"
Code-39 Printer In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create ANSI/AIM Code 39 image in VS .NET applications.
A remote exception encountered during a further remote call can be any of the remote exceptions encountered by clients:
Encode Barcode In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
ActivateFailedException ConnectException ConnectIOException MarshalException NoSuchObjectException RemoteException SkeletonMismatchException StubNotFoundException UnmarshalException UnknownHostException The RMI specification is self contradictory concerning this exception A3 says it is thrown in the context of "any exception that occurs while the server is executing a remote method", and the commentary of A31 says that "the client will know that its own remote method invocation on the server did not fail, but that a secondary remote method invocation made by the server failed" However, table A31 includes several exceptions arising out of the execution of the original call, including UnmarshalException unmarshalling the parameters, and MarshalException marshalling the return value Sun's implementation agrees with the tables in these sections of the specification, rather than the prior commentary in each case[2]
Generate Bar Code In Java
Using Barcode generator for Java Control to generate, create bar code image in Java applications.
In fact, up to at least JDK 13, a MarshalException in the server while encoding the result triggers a design bug leading to an RMI protocol error and an UnmarshalException at the client Fixing this bug would require an API change: adding a javarmiserverRemoteCallgetResultStream method which can be executed before the success or failure of the call is determined A420 javarmiserverServerNotActiveException This is thrown by RemoteServergetClientHost if it is called from an execution context thread which is not currently servicing a remote method call (ie the main thread or a background activity of an RMI server) A421 javarmiServerRuntimeException This means that the remote server got a javalangRuntimeException executing the remote
Code 3/9 Generation In Java
Using Barcode creator for Java Control to generate, create Code 3 of 9 image in Java applications.
method This exception is not thrown from RMI servers executing in Java environments from Java SDK 12 or later; instead the original RuntimeException is propagated to the client If this exception, or a RuntimeException, is thrown by the server, the exception propagates to the client The server continues to operate A422 javarmiserverSkeletonMismatchException This indicates that the class of the skeleton for the remote server didn't match the stub class being used by the client, or that the skeleton no longer matches the remote interface, due to evolution of the latter Skeletons are not required by the JDK 12 stub protocol, hence this exception is deprecated in JDK 12, and only thrown by the server if the client is using the 11 stub protocol: this occurs if the stub is generated with rmic v11, or if the client is executing in a JDK 11 environment A423 javarmiserverSkeletonNotFoundException This indicates that the class of the skeleton for the remote server was not found Skeletons are not required by the JDK 12 stub protocol, hence this exception is deprecated in JDK 12, and only thrown by the server if the client is using the 11 stub protocol: this occurs if the stub is generated with rmic v11, or if the client is executing in a JDK 11 environment For possible causes of this exception see the discussion in A425, reading "skeleton" for "stub" throughout; see also A5 A424 javarmiserverSocketSecurityException This indicates that the code exporting a remote object (either by construction or by calling an exportObject method) does not have permission to create a javanetServerSocket on the port number specified This is a typical early hurdle for RMI developers RMI has extensive security implications: code mobility is disabled in RMI unless a security manager is installed; and so you tend to always install one This has the effect of disabling large parts of the Java runtime system The solution is to tell the security manager to re enable the parts required by your application, by providing an application or installation specific security policy file, and naming the URL of this file in the javasecuritypolicy property:
EAN13 Printer In Java
Using Barcode generation for Java Control to generate, create EAN-13 Supplement 5 image in Java applications.
ANSI/AIM Code 128 Generator In Java
Using Barcode printer for Java Control to generate, create USS Code 128 image in Java applications.
Generating Code 128B In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
Code-39 Reader In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Code 128 Code Set C Scanner In .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Barcode Reader In VS .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.