Error when calling Python from Java and passing parameters

Question

Below is the given code for calling Python from Java

public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new test1( ).setVisible(true);
        }
    });
    try {
        PythonInterpreter.initialize(System.getProperties(), System.getProperties(), new String[0]);
        PythonInterpreter interp = new PythonInterpreter();
        interp.set("firstName", args[0]);
        interp.set("lastName", args[1]);
        interp.execfile("‪C:\\Users\\priyank\\Desktop\\pythontest.py");
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}

I am getting the following exception:

java.lang.ArrayIndexOutOfBoundsException: 0" error..

Why do I get this error?

Community · Accepted Answer · 2017-05-23 12:31:35Z

0

A pipe can be a better solution. Have a look at this thread:

java: how to both read and write to & from process thru pipe (stdin/stdout) .

edited May 23, 2017 at 12:31

CommunityBot

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answered May 29, 2013 at 14:45

Steffen Jaeschke

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2 Comments

eddy Over a year ago

I did not understand this example, sorry I am new to Java and Python

fvrghl Over a year ago

What did you not understand?

Udo Klein · Accepted Answer · 2013-05-31 04:54:31Z

0

It looks like you do not pass any arguments, when you start your application. The args-array is empty (size = 0), but then you are trying to access the first element (index 0), which does not exist.

edited May 31, 2013 at 4:54

Udo Klein

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answered May 29, 2013 at 14:40

desperateCoder

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1 Comment

eddy Over a year ago

I have added two string to it, still i am getting the same error, please help me rewriting it, and if you can please tell me how to pass parameters to python from java.

Alex Siri · Accepted Answer · 2014-01-02 10:25:19Z

0

Change the values to

interp.set("firstName", args[1]);
interp.set("lastName", args[2]);

it will work, as the first value is the python script file name but we are not adding that, please check that.

edited Jan 2, 2014 at 10:25

Alex Siri

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answered Jan 2, 2014 at 10:02

Raghavender

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