Overview - Calling Native OO COBOL from Java

You can write classes in native OO COBOL which can be called from Java programs as though they were Java classes. You do this by providing a Java wrapper class, which provides a function for each method in the native OO COBOL class.You can then publish the resulting Java classes to your UNIX system.

The functions in the Java wrapper class put all the parameters for the method into a Java array, and then call one of the member functions of Java class com.microfocus.cobol.RuntimeSystem to invoke the method in the native OO COBOL class and return the result. This is shown in the figure below: