Sun Microsystems, Inc. Java Development Kit

The Java™ Development Kit (JDK) is software that is distributed by Sun Microsystems, Inc. for Java developers. It includes the Java interpreter, Java classes, and Java development tools: compiler, debugger, disassembler, appletviewer, stub file generator, and documentation generator.

The JDK enables you to write applications that are developed once and run anywhere on any Java virtual machine. Java applications that are developed with the JDK on one system can be used on another system without changing or recompiling the code. The Java class files are portable to any standard Java virtual machine.

To find more information about the current JDK, check the version of the IBM^® Developer Kit for Java on your iSeries™ server.

You can check the version of the default IBM Developer Kit for Java Java virtual machine on your iSeries server by entering either of the following commands:

• java -version on the Qshell command prompt.
• RUNJVA CLASS(*VERSION) on the CL command line.

Then, look for the same version of Sun Microsystems, Inc. JDK at The Source for Java Technology java.sun.com for specific documentation. The IBM Developer Kit for Java is a compatible implementation of the Sun Microsystems, Inc. Java Technology, so you should be familiar with their JDK documentation.

See the following topics for more information:

• Support for multiple Java Development Kits (JDKs) provides information about using different Java virtual machines.

• Native methods and the Java Native Interface defines what a native method is and what they do. This topic also briefly explains the Java Native Interface.