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Download

Users

If you just want to use JBit on your mobile phone, you can get it from GetJar:

• JBit2 - Versions for MIDP2 phones (unless your phone is quite old, this is probably what you want).
• JBit - Versions for MIDP1 phones.

If your phone is on the list, please click on the works or does not work link; this will give me valuable feedback. If your phone is not on the list, you can still download JBit by switching to the Versions tab.

You can also download the JBit-yyyymmdd-bin.zip package from the SourceForge File Release page.

Developers

The SourceForge File Release page also includes:

JBit-yyyymmdd-sdk.zip

This contains the JBit runtime (a stripped-down version of JBit suitable for repackaging), a few test programs and some support files.

You can take the runtime, rename it, change some properties (e.g. MIDlet-Name, MIDlet-Vendor, JBit-AutoRun) in the MANIFEST.MF/Jad files, replace the included program and redistribute the resulting MIDlet.

To use the SDK you will need:

• An Assembler
  I recommend cc65; it is a C compiler, but it comes with an assembler and a linker.
• Something to modify jar files (i.e. renamed zip files)
  7-Zip is an easy choice for Windows users. Later on, you might want to make some scripts to automate the packaging.
• Time and willingness to tinker
  The SDK is still mostly undocumented.

You can browse most of the SDK from the Demo page.

JBit-yyyymmdd-src.zip

This contains the MIDlet source. To compile JBit from source you will need:

• Java SE Development Kit. I use version 1.6.0; any version should be fine.
• Sun Java Wireless Toolkit. I use versions 1.0.4 and 2.5; again, any version should be fine.
• Ant. I use versions 1.6.5 and 1.7.0; I have no idea if you can use other versions.
• Antenna. I use version 0.9.15beta; you need a recent one (JBit uses the new preprocessor).
• ProGuard. I use version 3.8; I have no idea if you can use another version.

A few words of advice if you are a Java programmer, like the "purity" of the language and would like to learn J2ME programming: JBit is probably not the project you are looking for. Java has been chosen because it is available on millions of devices, not because it is pretty. JBit is written in procedural style and uses heavily the Antenna preprocessor... you have been warned!