How to execute Python script from Java?

Question

I can execute Linux commands like ls or pwd from Java without problems but couldn\'t get a Python script executed.

This is my code:

Answer 1

You cannot use the PIPE inside the Runtime.getRuntime().exec() as you do in your example. PIPE is part of the shell.

You could do either

• Put your command to a shell script and execute that shell script with .exec() or

• You can do something similar to the following

  String[] cmd = {
          "/bin/bash",
          "-c",
          "echo password | python script.py '" + packet.toString() + "'"
      };
  Runtime.getRuntime().exec(cmd);