Oracle announced the availability of JDK 7 Update 6 which introduces a JDK for Linux on ARM v6 and v7 architecture. This JDK is aimed at “general purpose” ARM systems, such as ARM micro-servers and ARM development platforms. This new JDK for Linux on ARM is licensed under the Oracle Binary Code License, and can be downloaded at no cost for development and production use on general-purpose platforms. For embedded use such as an industrial controller or a kiosk appliance, a commercial license would be required.
Here’s how Oracle summarizes the ARM Linux JDK features:
This port provides 32-bit binary for ARMv6 and v7, with full support for Swing/AWT, both client (C1) and server (C2) compilers and runs on most Linux distributions. One caveat is that the current binary is softfloat ABI only, so it won’t work with (for example) the Raspbian distribution which uses the hardfloat ABI. We are planning to add hardfloat support in an upcoming JDK release, as well as support for JavaFX on ARM.
This new JDK is different from Java SE Embedded which supports ARMv5 architectures and above, x86, and PPC, is optimized for small footprint devices and licensed commercially for embedded use.
There are 2 downloads (No direct links as this goes via a license agreement):
- Java SE Development Kit 7u6 (jdk-7u6-linux-arm-sfp.tar.gz)
- Java SE Development Kit 7u6 Demos and Samples Downloads (jdk-7u6-linux-arm-sfp-demos.tar.gz)
Oracle must not have paid attention to the latest ARM developments, and force a soft-float (armel) release upon us, which means you won’t be able to use any armhf rootfs/distributions such as Raspbian or the Ubuntu images released by Linaro, and make sure you install a soft-float distribution/rootfs. If you want to keep using armhf distros, Oracle Java is not the only option to get Java on ARM, and you can already use OpenJDK. But not is all bad, as at last, you’ll be able to get some coffee with your raspberry pi.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
What a cool post by Oracle, and what an honour that Raspi and Raspbian are mentioned!
It looks like Oracle are talking to Raspbian’s main developer:
So an ArmHF JDK could be on the way soon.
Yes, they said they would add hard-float to an upcoming JDK release.