Is it possible to lock the keyboard of a client from a server using java

please explain wheterit is possible to lock the keyboard of a client from a server using java

You want to process code on one machine, and thereby lock the keyboard on another machine? No, that's not possible. It is extremely far from possible.
Of course, if the client is running software with security holes in it you might hack into it and crash the thing. This will lock up the keyboard pretty good. I hope that's not what you want ...
Or are you talking about a setup where you already have code running on the client, and some sort of communication between client and server? In that case what you need to know is whether it is possible to lock the keyboard at all. Once you have figured that out, it is trivial to add the communication code to have the server software tell the client software to lock the keyboard.
So what do you mean with "lock the keyboard"? It's pretty easy to remove/disable all keyboard related listeners in your own application. It's a lot harder (and AFAIK impossible with pure java) to disable alt-tabbing out of the application. And impossible, except from exploiting security holes, to lock the ctrl-alt-delete-combination on windows machine.

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    ****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
    2015 Microsoft MVP - Windows Experience Consumer

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    Come follow your BlackBerry Technical Team on twitter! @BlackBerryHelp
    Be sure to click Kudos! for those who have helped you.Click Solution? for posts that have solved your issue(s)!

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    Come follow your BlackBerry Technical Team on twitter! @BlackBerryHelp
    Be sure to click Kudos! for those who have helped you.Click Solution? for posts that have solved your issue(s)!

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