I have no RMI experience and have a basic question I seem not to find an answer on the internet.
We want to have RMI calls from a client running jre 6.X to the server running jre 7.X. Is this possible?
Yes it is possible. RMI is highly interoperable.
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I am fairly new to the web development, I have been going over the release notes of the Java on different platforms like linux (oracle hotspot), AIX and hp-ux. I am actually investigating around the TLS support of each version of java on those platforms. I am coming across information(Java 8, AIX) showing the support for client-side connections and server-side connections. What I do not understand is what is the difference between them.
Does it simply mean that the client trying to connect to a server and the other is server trying to connect to a client? If that is the case why is the TLS support different for both of those connections. I would like to understand the general difference between both of them and what it has to do with the TLS support.
I am having an Android client and a Java Server. But I noticed that for a distributed application, RMI is needed but unfortunately not available for Android. I came across something called light weight RMI LipeRMI as a substitute. I don't know what exactly is the difference between Sun's RMI and LipeRMI? Does LipeRMI does the same job of Sun's RMI or does it have any limitation ?
I know that there are many questions on this topic, and I have been searching for an answer for the past 4 months. Everyone says check host address, port, and firewall. Well I have done these items, but am still not having any success.
We are running our web application locally using Apache Tomcat 7.0.27 through Netbeans 7.2.1 and are no longer able to connect to the SMTP server to send emails. When running the application on a virtual machine located on the server, there is no issue connecting. We have no problem connecting and sending mail using telnet locally with the same parameters.
We have tried looking at the SMTP logs on the server, and were able to access some logs, but can't find any related to the refused connection. Which SMTP logs would provide more information on this issue? I tend to think that since the connection is refused it may not even trigger any logging, is this a correct assumption? We migrated to IIS7 several months ago and were having trouble accessing IIS 6.0 Manager, so I am not sure that they are even set up correctly.
Does anyone have any ideas of how to further troubleshoot the connection?
Thank you in advance, and please let me know if I can provide any further information.
Almost certainly this is a problem with a firewall or anti-virus program on your local machine. If you can connect from that machine using telnet but can't connect from that same machine using a Java application, there's something on that machine preventing Java applications from connecting.
I recently faced the same problem while running the Mail sending code and what I found is that the code which I had written recently is using the Java version Jre7. But the older codes run in Jre 6 environment, which works perfectly even now also.
So what I had done is I just change the Jre version of my recent code to Jre 6. After that the code works perfectly without any exception.
So try to change your runtime environment to lower Jre and run the code.
In Java development on Windows there are two different transports that can be used while debugging.
What are the advantages of using Socket transport on the same computer where the app is running?
I know Socket can work on a remote computer. But I am trying to figure out if it makes a difference on my local dev box vs Shared memory?
Thank you.
UPDATE: I am using Intellij IDEA.
Shared memory will be faster :-)
The only advantage of sockets on same machine I can think of is that you have the same, universal debugging protocol, so when you deploy your app to a remote server the only visible change will be the ip.
What are the advantages of using Socket transport (...)?
The advantage of using Socket transport on the same machine is to ignore incompatibilities between the IDE JDK and the application's (or web-application) JDK.
Example:
Connect to a application that run on JDK32-bit will fail if the IDE is running a JDK64-bit using shared memory. In this case:
You MUST use Socket on the same machine.
I am facing a strange issue with apache MINA. I have server application which is based on apache Mina framework. I am using ExecutorFilter at the server side. the application works perfectly on my machine but when I am installing it on client's machine its "throwing exception".
Here is the error I am getting on client's machine:
java.lang.NoSuchMethodError: org.apache.mina.filter.executor.ExecutorFilter.<init>(II[Lorg/apache/mina/core/session/IoEventType;)V
This is how I am referring it in my code-
new ExecutorFilter(1, 100, IoEventType.MESSAGE_RECEIVED)
There are 2 differences I found between my system and client's machine -
Java Version ==> My 1.6.0_26 / Client's 1.6.0_24
Operating system ==> my XP SP3/ Client's Windows 2003 server SP 2
Can any one shed any light on any possible solution?
thanks in advance.
In my experience, a NoSuchMethodError (or NoClassDefFoundError, AbstractMethodError) at runtime almost always indicates a library version mismatch. Make sure your client uses the exact same Mina version, and make sure there does not happen to be a second version of the Mina JAR on the classpath confusing things.