Howto create javaArray with different derived classes of an abstract superclass?

Dear Community,

I am trying to create a Java Array consisting of objects that belong to the same superclass but are different classes by themselves. In my case I have the following code:

subject_term = javax.mail.search.SubjectTerm('asdasd');
sender_term = javax.mail.search.FromStringTerm('[e-mail]');
term_array = javaArray('javax.mail.search.SearchTerm', subject_term, sender_term);
combined_terms = javax.mail.search.AndTerm(term_array);

When I execute that code, the following error occurs:

Undefined function 'javaArray' for input arguments of type 'javax.mail.search.SubjectTerm'.

In addition to that, I cannot create an Array the following way:

term_array(3, 1) = javax.mail.search.SearchTerm();

Because SearchTerm is an abstract class.

Java exception occurred: java.lang.InstantiationException: javax.mail.search.SearchTerm

Is there a way to typecast a Java object in MATLAB? Or is there another method to create a java array in MATLAB?

Any help would be very appreciated!

Greetings

[Nikhil Sreekumar]

Hi Lewin,

Why is the 2nd and 3rd argument of javaArray aubject_term and sender_term? Shouldn't it be the dimensions? Also shouldn't it be javax.mailsearch.AndTerm(subject_term, sender_term)?

I ran the following code and didn't get any error:

subject_term = javax.mail.search.SubjectTerm('asdasd');
sender_term = javax.mail.search.FromStringTerm('[e-mail]');
term_array = javaArray('javax.mail.search.SearchTerm', 1, 2); % I am not a java expert, so don't know what is the use of dimension in this context
combined_terms= javax.mail.search.AndTerm(subject_term, sender_term)

Thanks

Nikhil