Integrating the Oracle Java Runtime Environment

Oracle provides two specialized Java editions for embedded development:

• Java SE embedded: This is a large subset of the desktop version of the standard Java SE. It contains optimizations with respect to the standard edition, like size and memory usage, to adapt it to the needs of mid-sized embedded devices.

• Java Micro Edition (ME): This is targeted at headless low- and mid-range devices, and is a subset of Java SE complying with the Connected Limited Device Configuration (CLDC), and including some extra features and tools for the embedded market. Oracle offers a couple of reference implementations, but Java ME will have to be individually integrated from source into specific platforms.

We will focus on Java SE embedded, which can be downloaded in binary format from the Oracle download site.

Java SE embedded is commercially licensed and requires royalty payments for embedded deployments.

Getting ready

Yocto has a meta-oracle-java layer that is meant...