Including Tess4J to a Java project as library in E

Question

I have an so far empty and clean Eclipse Java project. What do I have to do to use Tess4J as library for my web service that I want to develop? Is it even possible to use it as library for an Android project? (would be shortcutting a lot) There is an issue regarding .tif with android that I came across.

Tess4J is a wrapper for native code, because tesseract-ocr is written in C/C++. That I've got so far. But how to include this wrapper into my project?

I've googled a lot until I have decided to drop tesseract.Net, beacuse this project is badly maintained/documented and would force me to C# (which would be okay), but I didn't manage to get it to work, so I had to default to C/C++ (which is not okay) ;)

I'm kind of lost right now, so any help is welcome. regards.

Edit: followed the steps mentioned here (answer from nguyenq)

1: new Eclipse workspace

2: created a new dir called lib

3: copied \Tess4J\dist\tess4j.jar, \Tess4J\lib\jna.jar and \Tess4J\lib\jai_imageio.jar into lib (2)

4: created a new Java project in Eclipse

5: in project properties (4) I added the .jars from (3) to Java build path as external jars under libraries

6: I copied the dir \tessdata and libtesseract302.dll into the project root dir \workspace\project\

7: I created a new class Main and instantiated a Tesseract1 tesseract = new Tesseract1(); for testing

8: I run the application but an Exception was thrown: Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'libtesseract302' Module not found

Edit2:

7.1: I created a new class Main and instantiated a Tesseract tesseract = new Tesseract.getInstance(); for testing (source: here)

8.1: looked okay so far, but no logic implemented, just tried to build it.

Edit3:

9: nope, doesn't work. Still UnsatisfiedLinkError. Could it may be an issue regarding 32-bit vs. 64-bit? I'am working on Win7 64bit.

Answer 1

This problem causes because the .dll libraries does not support for 64bit version of Eclipse and JDK(with JRE). You have to install 32bit version of JDK and the Eclipse and repeat this process again. Working fine for me.

Answer 2

Follow the steps described in the following link to get Tess4J to run in Eclipse:

http://sourceforge.net/projects/tess4j/forums/forum/1202294/topic/4506433

I'm not sure the library would run on Android because it seems JNA support on the platform is not there yet.

If you want a .NET wrapper for Tesseract 3.01, take a look at https://github.com/charlesw/tesseract-ocr-dotnet.