Running windows command line from Java

Question

I'm trying to run the following command

tesseract test10.png text -l nor

using Java's

Runtime.getRuntime().exec()

command.

It is working when using, the simple "cmd /c dir" command, but I can not figure out the correct syntax/way to use the command.

Please help!

possible duplicate of How to Execute Windows Commands Using Java - Change Network Settings — Perception
– Perception, Commented Oct 13, 2011 at 14:09
Read When Runtime.exec() won't & implement every recommendation it offers. — Andrew Thompson
– Andrew Thompson, Commented Oct 13, 2011 at 14:25

Hachi · Accepted Answer · 2011-10-13 14:06:56Z

1

do you use exec(String cmd) or exec(String[] cmd)?

sometimes I had problems with the first one, though I can't tell, what went wrong

if you exec "tesseract test10.png text -l nor" then try out "cmd /C \"tesseract test10.png text -l nor\"" (and the same as String[]) maybe some of these work

answered Oct 13, 2011 at 14:06

Hachi

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maxivis · Accepted Answer · 2013-04-09 00:05:42Z

1

This works:

try {
        Runtime rt = Runtime.getRuntime();
        Process pr = rt.exec("C:\\Path_to_tesseract\\tesseract.exe D:\\image.png D:\\outputFile");

        BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream()));

        String line=null;

        while((line=input.readLine()) != null) {
            System.out.println(line);
        }

        int exitVal = pr.waitFor();
        System.out.println("Exited with error code "+exitVal);

    } catch(Exception e) {
        System.out.println(e.toString());
        e.printStackTrace();
    }

answered Apr 9, 2013 at 0:05

maxivis

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Comments

nguyenq · Accepted Answer · 2011-11-13 21:59:06Z

0

Take a look at OCR.java file of VietOCR, which uses ProcessBuilder to invoke Tesseract executable.

edited Nov 13, 2011 at 21:59

answered Oct 13, 2011 at 23:33

nguyenq

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