Usage of java package

[Jose]

Hello.

I am trying to use the java package, but I have not found clear enough 
documentation about how to use it to pass primitive data types, arrays 
and matrixes from java to octave and viceversa.

After some search in Internet I tried to find JHandles, as it is 
supposed to be using the java package, but I could not find it. Can 
somebody point me to some examples?

A more concrete example of what I need.

In java I have (simplified)

public class MyClass
{
        public long numA;
        public byte[] arrayB;
        public int numB;
        
        public MyClass(long nA, byte[] aB, int nB)
        {
                this.numA = nA;
                this.arrayB = aB;
                this.numB = nB;         
        }
        //Other methods
}

How do I call the constructor of MyClass from octave?
How do I retrieve the values of numA, arrayB and numB in octave?

BR
Jose