
26 Introduction to the New Maineframe: z/VSE Basics
In addition to creating new application code, the programmer is responsible for
maintaining and enhancing the company’s existing mainframe applications. In
fact, this is often the primary job for many of today’s mainframe application
programmers. While mainframe installations still create new programs with
Common Business Oriented Language (COBOL) or PL/I, languages such as
Java™ have become popular for building new applications on the mainframe,
just as they have on distributed platforms.
Widespread development of mainframe programs written in high-level languages
such as COBOL and PL/I continues ...