Integrating Python into Java - can we call .py files directly?
Question: I am trying to understand Jython. I have some algorithms written in Python
that I want to integrate in Java. The Jython docs are very complex for me to
understand. All I could get from them is that I can run individual Python
statements from Java by embedding them like this:

    
    
    interp = new PythonInterpreter();
            interp.exec("import sys");
            interp.exec("print sys");
    

But I can't embed my giant algorithms like that. I need to run the py scripts.
Is there any way to do that? Can I get a hello world example where the
`print("hello")` statement is written in a py script file and the output is
shown on a Java console?


Answer: Jython its the better option

else you can run python program from the java using the command prompt and
collect the output back in java

as eg:

    
    
     ProcessBuilder builder = new ProcessBuilder(
                    "cmd.exe", "/c", "C:\\Python27\\python.exe C:\\Users\\Bens\\Desktop\\test.py");
            builder.redirectErrorStream(true);
            Process p = builder.start();
            BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line;
            while (true) {
                line = r.readLine();
                if (line == null) {
                    break;
                }
                System.out.println(line);
            }
        } catch (IOException ex) {
            Logger.getLogger(TCPServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    

