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Modernize your business-critical applications

This brief highlights the features and benefits of the Java programming language on the IBM® z/OS® platform.

Leverage IBM® z16™ enhancements

Optimize application performance on IBM z16 with the latest COBOL, PL/I, C++, and Java.

Popular use cases

Java interoperability with other languages

A centralized blog for all your Java interoperability needs.

Java application development for IMS

Write Java applications to access IMS databases and process IMS transactions.

Get started with Java in CICS

Write Java applications that use CICS services with CICS control, just as you would for any other environment.


Java tutorials library

Java is a critically important language for IBM z/OS. Check out these Java tutorials to better understand Java on z/OS.

Videos: Java on z/OS

See a consolidated playlist of Java on z/OS videos.

Tips for Java on z/OS

Browse through a variety of resources to find hints and tips for working with Java on z/OS.

Other resources

Request for Enhancement (RFE)

Collaborate directly with the development teams and users in the Servers and Systems Software RFE Community.

Lifecycle dates

Review service lifecycle dates for current releases of IBM SDK, Java Technology Edition.

Semeru runtimes

Use these free production-ready binaries built with the OpenJDK class libraries and the Eclipse OpenJ9 JVM.

Upgrade warranty and maintenance

Maintain a high level of availability with best-in-class IT support to keep mission-critical systems running smoothly.

IBM a Leader in support services

Learn why IDC MarketScape said support services is a differentiator in vendors. And why IBM is a Leader.

Technical details