Calling python file from java throws error

Question

I am trying to call python file from java. but it throws following error.

java.io.IOException: Cannot run program "python": CreateProcess error=2, The system cannot find the file specified

The code that I have tried is :

    Process p = Runtime.getRuntime().exec("python C:\\Project\\Script\\Test.py");
    BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
    System.out.println(in.readLine());

what could be the problem?

I think following link may help you, Java ProcessBuilder Cannot Find File Specified — Tushar Deshpande
– Tushar Deshpande, Commented Jun 5, 2017 at 8:00

Vikram Sharma · Accepted Answer · 2017-06-05 08:58:15Z

0

Runtime.exec expects a file with no path information to be in the user dir and not in the directory you specify to use as working directory. Try using this code once.

Runtime rt = Runtime.getRuntime();
Process prs;
File Dir_temp = new File("C:\\Project\\Script\\");
prs = rt.exec(new File(Dir_temp, "Test.py").getAbsolutePath(), null, Dir_temp);
prs.waitFor();
prs.destroy();

answered Jun 5, 2017 at 8:58

Vikram Sharma

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1 Comment

Ilham Safeek Over a year ago

again it throws java.io.IOException: Cannot run program "C:\Project\FBLogin\Test.py" (in directory "C:\Project\Script"): CreateProcess error=193, %1 is not a valid Win32 application

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