Using Python from Java

Simple.java

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStreamReader;

import org.python.core.PyObject;
import org.python.util.PythonInterpreter;

public class Simple {
    public static void main(String[] args) {

        PythonInterpreter python = new PythonInterpreter();

        /*
         * The following two lines make it work.
         */
        python.exec("import sys");
        python.exec("sys.executable=\"\"");

        //exec the file in the interpreter
        python.execfile("./test.py");

        //print the interpreter's namespace
        //System.out.println(python.getLocals());

        //recover an object from the namespace
        PyObject foo = python.get("anInstance");

        //invoke a method on the recovered object
        PyObject bar = foo.invoke("mySimpleMethod");

        System.out.println(bar);

    }

}