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](http://stackoverflow.com/questions/7112259/how-to-execute-windows-commands-using-java-change-network-settings) — Perception, Oct 13 '11 at 14:09
Read [When Runtime.exec() won't](http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html) & implement **every** recommendation it offers. — Andrew Thompson, Oct 13 '11 at 14:25

score 1 · Answer 1 · answered Apr 09 '13 at 00:05

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();
    }

score 1 · Answer 2 · answered Oct 13 '11 at 14:06

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

nguyenq · Accepted Answer · 2011-11-13T21:59:06.380

0

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

edited Nov 13 '11 at 21:59

answered Oct 13 '11 at 23:33

nguyenq

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Running windows command line from Java

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