Call a COBOL program from Java

I am trying to call a COBOL program from Java. I'm able to call the program and pass parameters, but I'm unable...

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to receive any back even though the program return a result.

The easiest way to connect a Java bean to an RPG program is using DB2 stored procedures. The article I wrote in this link gives all the details.

(Free registration to this link is required.)

You can call the RPG program passing parms and receiving results from Java directly by declaring the procedure before calling OR register it first in the database and then call it.

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Enhancing RPG with external SQL stored procedures Registering an external SQL stored procedure and leveraging RPG with your creation allows for increased flexibility in dealing with numerous types of data.

Allow access to data from a stored procedure result set using COBOL or RPG For COBOL and RPG programs to process the data after the stored procedure call completes, you need to direct the SQL stored procedure to place the result set in a global temporary table. COBOL and RPG cannot access embedded SQL as of V6R1.

There is very little RPG on System i can't do: From RPG nay to RPG yay! Some are skeptical of RPG on System i's ability to do much outside of a green screen. But RPG believer Aaron Bartell shares how to create graphical pie, bar and line charts with RPG and a bit of Java, along with some free code sets. He describes the RPG Chart Engine tool (free open source) he created and explains its coding and functions.

Introduction to multi-threaded programming -- part 2 Multi-threaded programming was introduced on the AS/400-iSeries back in V4R2, but was limited to C and Java programs. Multithreaded programming took a big step up with the release of V4R4 when multithreaded support was added to the RPG and COBOL languages. In an earlier tip, Introduction to multi-threaded programming -- part 1, we discussed the basics of multithreaded programming and how it is advantageous to both you and your users. Now, let's take a look at how you actually go about creating a multi-threading program.

Dynamic memory in V5: Harness the power -- part 1 Report Program Generator (RPG) programmers have been able to use dynamic memory (or "heap storage" as IBM likes to call it) for a number of years now, but not until V5 hit the streets had it been fully implemented. With RPG's dynamic memory built-in functions, working with dynamic memory is easier and more intuitive than ever.

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