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My java program uses matlab code packaged as jar files for image processing. The problem is when I call a function(written by me) with a call to 'mmreader' for the first time, it works fine. However any subsequent call to a function(same or different) calling 'mmreader' doesn't work and I get an error stating function mmreader not found.

I am also facing a similar problem in another part of my application where the call to matlab function simply throws an exception, the same piece of code works fine in other files.

try{
      vplayer.playmov(player_params);
   }
catch(Exception e){
            System.out.println("error playing cluster");
  }
Amro
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meraj
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2 Answers2

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I would take a quick look at this link Accessing Matlab from Java Here are a couple excerpts from the page that might be useful.

 mlapp.MLApp mlApp = new mlapp.MLApp(); 

 String result = mlApp.execute("a = [1 2 3 4; 5 6 7 8;]"); 
 System.out.println("Execute result is " + result);

Inside those quotes, you can even call a MATLAB function, just make sure that you are assigning the output to the right data type.

The most important part of that link is;

We assume you have downloaded and expanded the J-Integra® kit from http://j-integra.intrinsyc.com/ and installed it correctly.

Without that installed, you cannot do the above statement.

Kyle Uithoven
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0

Besides that, in MATLAB you can create a JAR with your functions and sign that JAR to only work with your applications. Perhaps you'll need the MATLAB runtime to make that app work I'm not sure about that.

AndreDurao
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