Running java programs in one runtime instance

Question

I am wondering if such thing is possible: I have a java program that takes arguments and gives output to the console. What i need is to run it multiple times - it (jar file) runs smoothly but the overhead for starting and stoping java runtime is way to big. Is there a way to instantiate java runtime (or vm, I'm not sure how to call it) once, and then somehow connect to that runtime several times and execute the jar?

I hope that despite my serious ignorance of java terminology, someone will be able to answer my question :D.

Answer 1

It should be straightforward to write a wrapper class that calls into the JAR's Main-class, and calls AppClass.main() with the appropriate arguments repetitively:

// wraps class MyWrapped
class MyWrapper {

public static void main(String[] args) {
   for (each set of command-line args) {
       MyWrapped.main(arguments);
   }
}

Remember, a Java app's main() method is nothing special, it's just a static method you can call yourself. It could even be invoked by multiple threads simultaneously, if properly designed.