JDK 1.3 is no longer supported and JDK 1.4 is optional. Also the IFS root directory for JAVA in iSeries is now /QOpenSys which contains the /QIBM sub directory. BM i supports using multiple JDKs simultaneously, but only through multiple Java virtual machines. A single Java virtual machine runs one specified JDK. You can run one Java virtual machine per job.
When using IBM Technology for Java, you select which 5761-JV1 option to run (and therefore which JDK/bit mode) by setting the JAVA_HOME environment variable. Once a Java virtual machine is up and running, changing the JAVA_HOME environment variable has no effect.
The following table lists the supported options for this release.
| 5761-JV1 options | JAVA_HOME | java.version | |
|---|---|---|---|
| Option 8 - IBM Technology for Java 5.0 32-bit | /QOpenSys/QIBM/ProdData/JavaVM/jdk50/32bit | 1.5 | |
| Option 9 - IBM Technology for Java 5.0 64-bit | /QOpenSys/QIBM/ProdData/JavaVM/jdk50/64bit | 1.5 | |
| Option 11 - IBM Technology for Java 6 32-bit | /QOpenSys/QIBM/ProdData/JavaVM/jdk60/32bit | 1.6 | |
| Option 12 - IBM Technology for Java 6 64-bit | /QOpenSys/QIBM/ProdData/JavaVM/jdk60/64bit | 1.6 | |
| Option 13 - IBM Technology for Java 1.4.2 64-bit | /QOpenSys/QIBM/ProdData/JavaVM/jdk14/64bit | 1.4 | |
Note: If you install only one JDK, the default JDK is the one you installed. If you install more than one JDK, the following order of precedence determines the default JDK:
- Option 11 - IBM Technology for Java 6 32-bit
- Option 12 - IBM Technology for Java 6 64-bit
- Option 8 - IBM Technology for Java 5.0 32-bit
- Option 9 - IBM Technology for Java 5.0 64-bit
- Option 13 - IBM Technology for Java 1.4.2 64-bit
Here is a sample CL Program to set Java Environment on iSeries V7R1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | PGM RMVENVVAR ENVVAR(JAVA_HOME) MONMSG MSGID(CPF0000) ADDENVVAR ENVVAR(JAVA_HOME) + VALUE('/QOpenSys/QIBM/ProdData/JavaVM/jdk60+ /32bit') RMVENVVAR ENVVAR(CLASSPATH) MONMSG MSGID(CPF0000) ADDENVVAR ENVVAR(CLASSPATH) + VALUE('.:/QIBM/ProdData/HTTP/Public/jt400/u+ tilities:myDirectory/lib/jt400.jar:myDirect+ ory/lib/xerces.jar:myDirectory/lib/xercesSa+ mples.jar:myDirectory/lib/jce.jar:myDirecto+ ry/lib/jsse.jar') ENDPGM |
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