A recommended way would be to convert your Python code in a REST microservice and then use that in your Java program.

A better approach would be to treat the Python script as an external service to be called rather than a file to be executed. In this case, I would strongly advise Flask as a light-weight framework.

A simple flask application would look something like this:

from flask import Flask, jsonify
app = Flask(__name__)

@app.route('/')
def hello():
    # Call your script method here
    return jsonify(success=True)

if __name__ == '__main__':
    app.run(debug=True)

In the case of local development, you can run this application with the shell command "python filename.py". By default, you can call this service by http://127.0.0.1:5000/ using the preferred Java method of yours.

I dug the internet a lot and found the solution.

One can do this using the following commands:

String fetching = "python " + "c:\\Fetch.py \"" + songDetails + "\"";
String[] commandToExecute = new String[]{"cmd.exe", "/c", fetching};
Runtime.getRuntime().exec(commandToExecute);

you are not putting your HelloWorld.py file into the container that is why its not working what you need to do is add HelloWorld.py into the container and also make sure python is installed inside the container.

FROM openkbs/jdk-mvn-py3
ADD target/dockerMaster.jar dockerMaster.jar
ADD target/HelloWorld.py HelloWorld.py
EXPOSE 8080
ENTRYPOINT ["java", "-jar", "dockerMaster.jar"]