jython embedded into java

http://mavenhub.com/mvn/central-sync/org.python/jython-standalone/2.5.2

http://wiki.python.org/jython/UserGuide#embedding-jython

Embedding Jython

There are two options for embedding Jython in a Java application. You can make a real Java class out of a Python class, and then call it from your Java code, as previously described, or you can use the PythonInterpreter object

Information on the PythonInterpreter can be found in the JavaDoc documentation for org.python.util.PythonInterpreter.

The following example demonstrates how to use the PythonInterpreter to execute a simple Python program.

The python program:

import sys
print sys
a = 42
print a
x = 2 + 2
print "x:",x

The java code required to execute the python program:

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

public class SimpleEmbedded {

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

Note that the term "PythonInterpreter" does not mean the Python code is interpreted; in all cases, Python programs in Jython are compiled to Java bytecode before execution, even when run from the command line or through the use of methods like exec.