Developing Apama Applications > Developing Apama Applications in Java > Developing and Deploying JMon Applications > Java prerequisites
Java prerequisites
The following are Java prerequisites for using Apama’s JMon API. Apama Studio includes the required Java compiler.
*For development of JMon applications:
While Apama installation includes the Java Runtime Environment (JRE), it does not include a compiler or the jar utility. To write and compile JMon applications, you must have installed a Java development kit (JDK) on your system. In particular, you need a Java compiler, such as javac, and the jar utility.
You can download these from the following locations:
http://www.oracle.com/technetwork/java/javase/downloads/index.html
Apama includes Oracle JRE 7.0 and it is recommended that you use JDK 7.0 to develop, build, and test your applications. Use of any JRE other than the one that Apama ships with is discouraged.
*For deployment of JMon applications
When you start the correlator and specify the -j option, the correlator starts a Java Virtual Machine. It uses the first JRE/JDK in the PATH environment variable.
For deployed applications, it is highly recommended that you use JRE 6.0 update 27, which is the version that Apama ships with.
When you install Apama, the installation script installs the JMon API as correlator_extension_api5.2.jar in the Apama lib directory.
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