Java

2010-06-07T12:13:11Z

210.210.41.202: /* Nokia */ fix spelling

This page is about the Java programming language and Java Virtual Machine.

== Current state of affairs ==

=== Official support ===

==== SUN ====
There is no official Java ME or Java SE from SUN as of yet.

==== Nokia ====
Nokia does not plan support because Nokia already supports 2 development platforms: either GTK (Maemo 5) or Qt (Maemo 6) as well as WRT (Web Run Time).

=== Hardware support ===

==== 770/N800/N810(WME) ====
The Nokia 770, N800, N810(WME) CPUs have a proprietary extension called Jazelle which accelerates Java execution however this is technology requires a license. Nokia has not opted for such license hence there is no driver for this. For more information about Jazelle please see [http://en.wikipedia.org/wiki/Jazelle the Jazelle entry at Wikipedia].

==== N900 ====
Nokia N900 contains succesor of Jazelle found on ARMv7, called ThumbEE. This is more general JIT; not JVM-specific. Hardware support (driver) of ThumbEE is unknown.

== Solutions ==

=== [http://java.sun.com/javase/downloads/embedded.jsp Java SE for embedded 6] ===
* ARMv6 Linux - Headless (Early Access) EABI, glibc 2.5, Soft Float, Little Endian
* ARMv6 Linux - Headless (Early Access) EABI, glibc 2.5, Hard Float (VFP), Little Endian
* ARMv6 Linux - Headful (Early Access), EABI, glibc 2.5, Hard Float (VFP), Little Endian
* ARMv5 Linux - Headless (Early Access), EABI, glibc 2.5, Soft Float, Little Endian
* ARMv5 Linux - Headful (Early Access), EABI, glibc 2.5, Soft Float, Little Endian)

=== OpenJDK 6 JRE ===
Is ported to Debian GNU/Linux ARMEL therefore should work.

The [http://mint.camswl.com/openjdk.htm Cambridge ARM-optimised OpenJDK] has been shown to work.

=== [https://wiki.evolvis.org/jalimo Jalimo] ===
Aims for Java SE compliance with pre-SUN_Java_GPLed_code, previously ported to Maemo.

=== Google Android's Virtual Machine Dalvik ===

Maemo could greatly profit if it could run all Android apps. If Maemo subsumes Android, there is no reason anymore to choose Android. Moreover there is already an [https://blueprints.launchpad.net/ubuntu/+spec/mobile-karmic-android-execution-environment Ubuntu project] aiming at running Android apps in Ubuntu.
The [http://mjfrey.blogspot.com/ main developer] does, however, not respond to emails.

=== [http://code.google.com/p/microemu/wiki/Maemo MicroEmu] ===
Java ME emulator written in Java SE previously ported to Maemo

=== [https://phoneme.dev.java.net/ phoneME] ===
Java ME emulator written in C previously ported to Maemo.

=== Qt Jambi ===
Provides Java bindings for Qt. Swing native supported by headful Java versions.

=== Unsorted ===
For Java support in Maemo Browser a plugin is required. (References to be written.)

== Brainstorm ==
Please see [[Task:Brainstorm_Java]] for an effort to outline possible solutions to improve Java support on Nokia N900.

[[Category:Development]]
[[Category:N900]]

Maemo Wiki Mirror - User contributions [en]

Java