How to write(enable) Java code in HTML while using GWT 2.5?

Question

I've started taking advantage of GWT 2.5. The coolest feature of GWT 2.5 was the ability to write Java code directly in our HTML pages like so:

<script type="text/java">
   String helloWorld = "Hello world";
   Window.alert(helloWorld);
</script>

The trick is to use a ServletFilter on the server side. This ServletFilter uses the GWT compiler to compile this java code into Javascript and inject it into the HTML returned to the client.

I am unable to figure out how to filter this in web.xml or how to pass information to the compiler. How can I do this?

can you provide me the link of the google docs for this, i want to look into this feature... — JAVAC
– JAVAC, Commented Mar 1, 2013 at 9:34
Unable to find the Google doc for that.Lets hope someone will give a solution or link regarding that .I started it by reading plus.google.com/117487419861992917007/posts/Cg9vEE9csXS — Suresh Atta
– Suresh Atta, Commented Mar 1, 2013 at 9:44
I actually don't think this is an out of the box feature, but only to show what SuperDevMode and Elemental can do together, by simply code a ServletFilter that catches every <script type="text/java"> in an html page, synthesizes an on-the-fly module entry point, compiles in one second and replaces the script content with the output of the compilation. Unfortunately I don't think such a filter is available, you should ask Ray directly, through the G+ community, or the GWT-contributors group. — Andrea Boscolo
– Andrea Boscolo, Commented Apr 1, 2013 at 13:50
@Andrea Boscolo .thanks for the information.I'l do that and raise a ticket on G groups too. — Suresh Atta
– Suresh Atta, Commented Apr 6, 2013 at 5:44

Adrian B. · Accepted Answer · 2013-03-04 14:09:53Z

2

Here is the Google I/O 2012 - The History and Future of Google Web Toolkit you are referring too. And here are the slides posted by Ray Cromwell.

answered Mar 4, 2013 at 14:09

Adrian B.

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1 Comment

Suresh Atta Over a year ago

Thanks Adrian for the valuable links.But there I didn't get how to use the above feature there.Only explanation about the feature is there.

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