https://www.baeldung.com/run-shell-command-in-java

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);

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.

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"]

You can use Java Runtime.exec() to run python script, As an example first create a python script file using shebang and then set it executable.#!/usr/bin/python import sys print ('Number of Arguments:', len(sys.argv), 'arguments.') print ('Argument List:', str(sys.argv)) print('This is Python Code') print('Executing Python') print('From Java')if you save the above file as script_python and then set the execution permissions usingchmod 777 script_pythonThen you can call this script from Java Runtime.exec() like belowimport java.io.*; import java.nio.charset.StandardCharsets; public class ScriptPython { Process mProcess; public void runScript(){ Process process; try{ process = Runtime.getRuntime().exec(new String[]{"script_python","arg1","arg2"}); mProcess = process; }catch(Exception e) { System.out.println("Exception Raised" + e.toString()); } InputStream stdout = mProcess.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(stdout,StandardCharsets.UTF_8)); String line; try{ while((line = reader.readLine()) != null){ System.out.println("stdout: "+ line); } }catch(IOException e){ System.out.println("Exception in reading output"+ e.toString()); } } } class Solution { public static void main(String[] args){ ScriptPython scriptPython = new ScriptPython(); scriptPython.runScript(); } }Hope this helps and if not then its recommended to join our Java training class and learn about Java in detail.

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