How To Verify the IBM i Java Development Kit Is Functioning Properly?

Troubleshooting

Problem

This document shows how to test the functionality of Java after installation.

Environment

IBM i; IBM i Java Development Kit

IMPORTANT!!! After April 30th, 2024, IBM i 7.1 and earlier OS versions are no longer supported by IBM. As a result, no support is provided for the IBM JDK running on IBM i 7.1 and earlier OS versions.

IBM i 7.3, 7.2 OS and earlier OS versions have reached end of program support. For the IBM i 7.3 and 7.2 OS versions, a valid service extension contract must be purchased and active for the OS in order to obtain any level of support for any IBM JDK version. IBM i 7.1 and earlier OS versions are no longer supported by IBM and thus no support is available for the IBM JDK. See the "Supported IBM Java Development Kit (JDK) Versions by IBM i Operating System Version and Release" document for more information.

Resolving The Problem

This document shows how to test the functionality of the different IBM Developer Kit for Java products on the IBM i operating system.

1.	Determine which Java Developer Kits are installed. Type DSPSFWRSC and scroll down to 5770JV1
2.	You should see output similar to the following. You might find that you have some or all of the Java Developer Kits. From this list, determine which Java Developer Kits can be tested. 5770JV1 *BASE 2924 IBM Developer Kit for Java 5770JV1 14 5114 Java SE 7 32 bit 5770JV1 15 5115 Java SE 7 64 bit 5770JV1 16 5116 Java SE 8 32 bit 5770JV1 17 5117 Java SE 8 64 bit 5770JV1 19 5119 Java SE 11 64 bit 5770JV1 20 5119 Java SE 17 64 bit
3.	To test Java for each of the Java Developer Kits, use the RUNJVA command or use the java command in QSH. If everything is working correctly, QIBMHello will be returned for each command.

RUNJVA Technique

To test the IBM Technology for Java VM JDKs, an environment variable is required to be added first.

1.	On the operating system command line, type the following: ADDENVVAR ENVVAR(JAVA_HOME) VALUE('/QOpenSys/QIBM/ProdData/JavaVM/jdkXX/YYbit') Where... XX = 70, 71, 80, 11, or 17 YY = 32 or 64 Press the Enter key.
2.	On the operating system command line, type the following: RUNJVA CLASS(QIBMHello) QIBMHello Java program completed

QSH java Technique

To test the IBM Technology for Java VM JDK in Qshell, this requires the execution of the export command first.

1.	Type export JAVA_HOME=/QOpenSys/QIBM/ProdData/JavaVM/jdkXX/YYbit and press the Enter key. Where... XX = 70, 71, 80, 11, or 17 YY = 32 or 64
2.	Type java -showversion QIBMHello and press the Enter key. Example: > java -showversion QIBMHello java version "1.8.0_331" Java(TM) SE Runtime Environment (build 8.0.7.10 - pap6480sr7fp10-20220505_01(SR7 FP10)) IBM J9 VM (build 2.9, JRE 1.8.0 OS/400 ppc64-64-Bit Compressed References 20220401_26248 (JIT enabled, AOT enabled) OpenJ9 - 255b7d9 OMR - 3671a9f IBM - 1b0232b) JCL - 20220504_01 based on Oracle jdk8u331-b09 QIBMHello $

[{"Type":"MASTER","Line of Business":{"code":"LOB68","label":"Power HW"},"Business Unit":{"code":"BU070","label":"IBM Infrastructure"},"Product":{"code":"SWG60","label":"IBM i"},"ARM Category":[{"code":"a8m0z0000000CH5AAM","label":"Java Development Kit"}],"ARM Case Number":"","Platform":[{"code":"PF012","label":"IBM i"}],"Version":"All Versions"}]

Historical Number

482414458

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Document Information

Modified date:
01 October 2024

UID

nas8N1013778

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