java exec with process replacement

Here is command from python: os.execvp it runs other applicat开发者_C百科ion and current process is completely replaced with new one. From script point of view, os.execvp never returns result.

The question is how to make the same in Java. E.g. - I have app1.class and run it. It must execute other application, but the process should be replaced.

Do you know how to make it in java?

thank you

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You cannot do it in only Java. You have to spawn a new process and let the old one die.

It might be possible to create an JNI library on *nix and let it do exec for you. That would only work on unix-like operating systems. On windows you would have to spawn a new process and wait for it.