Calling Java from Matlab

I've seen there are a number of descriptions about this on the web, but I seem to be running into trouble. I have a simple Java function that I have compiled successfully in Java

// Java Code
//*------------------------------------
package testfunction;

public class TestFunction 
{
    public static void main(String[] args) {
        System.out.println("Hello, World");
    }
}
//*------------------------------------

and I am attempting to load and call from Matlab

%%Matlab Code
% ---------------------------------------

javaclasspath({
   'C:\Users\username\Desktop\JavaFunctions\TestFunction', ...
   'C:\Users\username\Desktop\JavaFunctions\TestFunction\dist\TestFunction.jar'...
   });

import testfunction.*
import testfunction.TestFunction

% ----------------------------------------

I can't even get test function to import correctly, I'm sure I'm missing something I just don't know what. Any assistance is welcome

Answer 1

[Malcolm Lidierth]

You have an instance of the Java VM running already with MATLAB so you do not need a main entry point. For hello world, just use a standard static method.

package a.b;
public class TestFunction { 

private TestFunction(){
}

public static void HelloWorld() {
 System.out.println("Hello, World");
 }
}

In MATLAB

javaaddpath...
a.b.TestFunction.HelloWorld()

To create an instance method:

package a.b;
public class TestFunction { 
public TestFunction(){
}
public void HelloWorld() {
 System.out.println("Hello, World");
 }
}

In MATLAB

x=a.b.TestFunction();
x.HelloWorld();

[Kyle]

thank you for the assistance

Answer 2

[Sachin Ganjare]

Check the links below:

http://blogs.mathworks.com/community/2009/07/06/calling-java-from-matlab/

http://www.mathworks.in/help/matlab/matlab_external/bringing-java-classes-and-methods-into-matlab-workspace.html

Hope it helps!!!

[Kyle]

thanks for the links they helped with an additional issue