Introducing the COBPROD application
This section introduces a simple application called COBPROD that will be used in subsequent sections when describing how to build non-OO COBOL applications that interoperate with Java™.
- cobprod.cbl
- Java-callable COBOL program that uses the
JAVA-SHAREABLEdirective to identify WORKING-STORAGE data items to be shared with Java.
- addlist.cbl
- Java-callable COBOL program that takes an array of
three
java.math.BigDecimalobjects, computes their sum and calls back to a Java static method to dump the result to the terminal, then returns the actual sum to the Java caller.
- CobProd.java
- Java program that starts the application, calls out to COBOL native method COBPROD, retrieves information from the PROD-INFO table in COBPROD's WORKING-STORAGE memory, then calls COBOL native method 'addlist'.
The COBPROD application starts on the Java side with the
"main" method of the CobProd class making a call to the COBOL native method COBPROD, which
initializes a Java-shareable table of product information in
its WORKING-STORAGE memory. When control returns to Java, some
of the prices from the product information table are collected into an array and passed to COBOL
native method 'addlist', which sums the prices and returns to Java where the sum is
displayed to the terminal.
For details about the files, see Example: COBPROD application - building and running.
Next step: Preparing to compile, bind, and run non-OO COBOL applications that interoperate with Java.