ReferenceError: java is not defined

[Bhuvaneswari Sundararaman]

Hi all

I am trying to call JAVA from lib/main.js file of my add on. A very simple line like var myString= new java.lang.String("hello"); is throwing an error ReferenceError: java is not defined How can I call JAVA from addon? I am able to call any java class from a standlone js file, invoked via a html file. But when I call from the js file in the add-on it cannot find JAVA. Am I missing something important? I checked both on ubuntu 11.04 and windows 7. Same issue. Please help. Thanks.

[Jeff Griffiths]

main.js is not run in a codument context and therefore does not have
any of the web content apis available to it. For example,
typeof("java") should return "undefined".

If you want to write code that accesses DOM apis and other apis
usually found in web content code, the simplest approaches are:

1. attach a content script to an existing page - most convenient of
you are already interacting with web content anyway.

2. or, create a page-worker instance with an empty document and attach
your content script to it.

It's hard to tell what would be a better approach without knowing a
bit more about your use case. Why do you need to access browser / java
apis? I would have thought JS would be able to do most if not all you
would need.

Jeff

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