Question

I want Matlab program to call a java file, preferably with an example.

Answer 1

Ok, I’ll try to give a mini-example here. Either use the java functions right from the Matlab window as zellus suggests, or, if need permits, create your own java class. Here’s an example:

package testMatlabInterface;

public class TestFunction
{
  private double value;

  public TestFunction()
  {
      value = 0;
  }

  public double Add(double v)
  {
      value += v;
      return value;
  }
}

Then turn it into a jar file. Assuming you put the file in a folder called testMatlabInterface, run this command at the command line:

jar cvf testMatlab.jar testMatlabInterface

Then, in Matlab, navigate to the directory where your testMatlab.jar file is located and run the command, import testMatlabInterface.* to import all the classes in the testMatlabInterface package. Then you may use the class like so:

>> methodsview testMatlabInterface.TestFunction
>> me = testMatlabInterface.TestFunction()

me =

testMatlabInterface.TestFunction@7e413c

>> me.Add(10)

ans =

    10

>> me.Add(10)

ans =

    20

>> me.Add(10)

ans =

    30

Let me know if I can be of further assistance.