How to increase the char size of metatile in page because by default we can set only 140 char.
Not if you're using the SitePublisher page properties. What I tend to do instead is capture metadata through the TagUI (which you can then better enforce/control/validate in workflow) and then inject that into the page using a Precontroller.
yes we can inject through java class but just i want to know how to inject more than 140 char keyword at the editing the page setting.
The injection itself has no limit. Like I said, the trick is to capture the content elsewhere. You won't be able to change the Page Editing interface.
