Jython 2.7.4 Embedding Jython

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Embedding Jython

There are several options for embedding Jython in a Java application. Sometimes the nicest approach is to make a real Java class out of a Python class and then just use that Python class from Java code. The simplest approach to embedding Jython is to use the PythonInterpreter object.

JavaDoc documentation for org.python.util.PythonInterpreter
The following example is distributed under Demo/embed/SimpleEmbedded.java

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

public class SimpleEmbedded { 
    public static void main(String []args)
	throws PyException
    { 
	PythonInterpreter interp =
	    new PythonInterpreter();

	System.out.println("Hello, brave new world");
	interp.exec("import sys");
	interp.exec("print sys");

	interp.set("a", new PyInteger(42));
	interp.exec("print a");
	interp.exec("x = 2+2");
	PyObject x = interp.get("x");

	System.out.println("x: "+x);
	System.out.println("Goodbye, cruel world");
    }
}