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I have two java projects. From project1 I have to call a method of project2. Both the projects are developed using the core java concepts and running seperately. As I know that in this case I will have to use any techniques that remotely invokes the methods(Am I correct?), like RMI, WebServices, JMS etc. I have to very frequently call the method of project2 from project1. What could be the best possible way to achieve this.
Thanks
Are your projects deployed to an application server or servlet container?
You can use web services to expose the method from Project 2. This would be standards based and would allow non-Java projects also in the future to access your service if required.
If it works for you, try to implement it in an asynchronous mode for better performance. Web services allow for asynchronous mode of invocation as well. However, for this, your Project 1 would also need expose a callback method.
EDIT:
I had come across that in Java 6, you can deploy web services outside of servlet container as well. Below link can help.
Standalone web services in Java SE 6
However not sure if this can be used in production environments.