Mainframe, MVS and zOS Discussion

java.io.File will work perfectly on a mainframe, because it's a part of the Java standard, so it's also platform-independent. However if you want to use some third-party libraries for your file handling, they might not work on a mainframe.

Hi, Sure. Since Java compiles to a bytecode, which is processor-independent, you can write your programs and even compile them on your local PC and then transfer that compiled binaries to a mainframe and they would work there. But some Java libraries use native code libraries, for example IBM JZOS l...

Depends on the tasks you want to accomplish with Java. I would recommend: - Java Stand-alone Applications on z/OS, especially volume II: http://www.redbooks.ibm.com/abstracts/sg247291.html If you need to work with DB2 via Java then you might want to read: - DB2 for z/OS and OS/390: Ready for Java, i...