Question

Typically, Java application runs with the start argument – path to .jar or .class .

But how to run a Java if my file in memory?

If these methods do not exist, can possibly compile Java with the argument

byte[] FileFromMemory

or

bufferedreader FileFromMemory

I’m trying to run from С++ application

Answer 1

You can write a customer classloader to do this or load the class into an existing class loader using reflection. Both approaches are considered very advanced topics so I would reconsider this unless you have many years of Java experience.

The simplest solution is to write the file to disk e.g. a Ramdisk like tmpfs This is a simpler (if less efficient) way to do this.