Configuring the COBOL JVM Project

Create a COBOL JVM Project

To create a new COBOL JVM Project:

Click File > New > COBOL JVM Project.
This opens the New COBOL JVM Project dialog box.
In the Project name field, type CJVM.
Click Finish.
The project is displayed in the COBOL Explorer.

Create a New Package

To create a new package:

In the COBOL Explorer, right-click the CJVM project.
Click New > COBOL JVM Package.
This opens the New COBOL JVM Package dialog box.
Note: The Source folder field already contains CJVM/src.
In the Name field, type my.pack.
Click Finish.
This creates my.pack in the src folder.

Create a COBOL Program

Create the following COBOL program in the my.pack package:

In the COBOL Explorer, expand CJVM > src.
Right-click my.pack.
Click New > COBOL Program.
This opens the New COBOL Program dialog box. The Source folder field already contains CJVM/src. The Package field already contains my.pack.
In the Name field, type Calculator.cbl.
Click Finish.
This opens the Calculator.cbl program in a COBOL editor.

Copy and paste the following COBOL code into the editor, overwriting the existing text:

      $set ilnamespace "my.pack"
       program-id. Calculator as "Calculator".

       data division.
       working-storage section.
       
       linkage section.
       01 lnk-arg1           pic 9(5) comp-3.
       01 lnk-arg2           pic 9(5) comp-3.
       01 lnk-sum            pic 9(5) comp-3.

       procedure division using by value lnk-arg1, 
                                by value lnk-arg2,
                                by value lnk-sum.
           add lnk-arg1 to lnk-arg2 giving lnk-sum.
           goback.

       end program Calculator.

Setting a namespace using the $SET statement, $set ilnamespace "my.pack", is equivalent to package identification in Java.

Tip: Doing this creates a package structure of your preference. This is a good practice because files that are compiled into a default package are not accessible from Java due to compiler restrictions.