Is it possible to set an environment variable at runtime from Java?

Question

Is it possible to set an environment variable at runtime from a Java application? In Java 1.5 java.lang.System class there is the getenv() method, I would only need a setenv

Answer 1

I don't think so, at least not purely in Java, but why do you need to do this? In Java it's preferable to use properties via System.getProperties(), which you can modify.

If you really must, I'm sure you could wrap the C setenv function in a JNI call - in fact, I wouldn't be surprised if someone has done so already. I don't know the details of the code, though.