what java virtual machine will do while executing multiple java applications

Question

By reading this article, I know that each java application will run in a specific Java Virtual Machine Instance. So if I execute the following commands(\"Java -jar test1.jar

Answer 1

1) No, but there a ways to launch java applications as services with wrappers (Google for "Java service").

2) Yes.

3) You can use communication between processes (v.g. HTTP). But there are no shortcuts due to all processes being run in JVM.

4) No