j2me.js

j2me.js is a J2ME virtual machine in JavaScript.

The current goals of j2me.js are:

1. Run MIDlets in a way that emulates the reference implementation of phone ME Feature MR4 (b01)
2. Keep j2me.js simple and small: Leverage the phoneME JDK/infrastructre and existing Java code as much as we can, and implement as little as possible in JavaScript

Building j2me.js

Make sure you have a JRE installed

Get the j2me.js repo if you don't have it already

    git clone https://github.com/andreasgal/j2me.js

Build using make:

    cd j2me.js
    make

Running MIDlets, tests

To run a MIDlet:

    python tests/httpServer.py &
    http://localhost:8000/index.html?jad=ExampleApp.jad&jars=ExampleApp.jar&midletClassName=com.example.yourClassNameHere

URL parameters:

• See full list at libs/urlparams.js
• Default midletClassName if none specified is RunTests

If testing sockets, 4 servers are necessary:

    python tests/httpServer.py &
    python tests/echoServer.py &
    cd tests && python httpsServer.py &
    cd tests && python sslEchoServer.py &

To run specific tests (e.g. TestSystem and TestRC4):

    python tests/httpServer.py &
    http://localhost:8000/index.html?args=java/lang/TestSystem,javax/crypto/TestRC4

Full list of RunTests tests available in the tests/Testlets.java generated file

There's no UI to enable certain privileges on Desktop that MIDlets might need. Use Myk's tcpsocketpup addon to accomplish that

Continuous integration:

• Uses Travis
• Runs automation.js which uses Casper.js testing framework and slimer.js (Gecko backend for casper.js)
• make test

gfx tests use image comparison; output should match reference

Logging

See logConsole and logLevel URL params in libs/console.js

Running j2me.js in the SpiderMonkey shell

1. Download the SpiderMonkey shell

2. Execute the jsshell.js file as follows:

    js jsshell.js package.ClassName