MATLAB with JAVA

Hello everybody,

I am aware that there is a way you can use Java classes in MATLAB, would anyone know how to actually do so and how to draw a simple signal in java class and make it work with MATLAB files??.. I basically want if this idea is possible to write few java classes in JAVA and others in MATLAB for the same project, IS it possible and will be able to integrate it together to behave like one big program. I am asked to use JAVA too even though signals are better used with MATLAB so thought I should use both to have some evidence of Object Oriented Technique

Answer 1

[Chirag Gupta]

I am not sure what you mean by a simple signal in Java. But here is a simple example:

--> Java Code

import java.lang.*;

public class SimpleJavaSignal
{
    public int returnSignal()
    {
        return 56;
    }
}

You compile this into SimpleJavaSignal.class.

Use

javaaddpath('directory where the .class file resides')
a = SimpleJavaSignal(); % Creates an object of the java class
methodsview(a); % displays all the methods
a.returnSignal() % calls the Java method returnSignal

Answer 2

[David Young]

Yes, it's very straightforward: info here.

Answer 3

[Mech Princess]

I tried this and I get the following error in matlab. Any idea why? thanks. ??? Undefined function or variable 'SimpleJavaSignal'.

[Chirag Gupta]

Did you compile the java program into the .class file and add the correct directory to the javaddpath?

You can check directories on the path using: javaclasspath