Good summary, particularly the last paragraph. Consequences of this include using flat files in place of "heap" storage, and using JCL to chain together indivi

Good summary, particularly the last paragraph. Consequences of this include using flat files in place of "heap" storage, and using JCL to chain together individual programs where newer languages would likely just have subroutines, classes or other separately compiled-but-linked modules. Disclaimer: I worked for a company in the early 90s that made products to port (System/36 & AS/400) RPG + OCL to unix (and a few other) systems. We used C, rather than Java, as the target for cross compiling, but same sorts of ideas.