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Home/ Questions/Q 7883427
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Editorial Team
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Editorial Team
Asked: June 3, 20262026-06-03T04:31:45+00:00 2026-06-03T04:31:45+00:00

I’m trying to cast an object passed by my client application to an object

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I’m trying to cast an object passed by my client application to an object of identical class in my server application.

The error I’m currently receiving in my server application is:

mei 02, 2012 11:44:43 PM server.UserThread process
SEVERE: null
java.lang.ClassNotFoundException: client.User

The object is being received by the server via Socket -> ObjectInputStream.

So I was wondering if you guys could help me cast the client.User class to my Server.User class. The only thing that works is placing the packages inside 1 project and then defining the exact location of the class.

Code can always be supplied.

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  1. Editorial Team
    Editorial Team
    2026-06-03T04:31:47+00:00Added an answer on June 3, 2026 at 4:31 am

    cast the client.User class to my Server.User class

    You can’t. They aren’t the same class. They are in different packages. They are different. If you want to share a class between server and client, you have to share a single .class file. That might imply creating a third package for shared stuff.

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