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error starting application

 
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Today I am resuming my programming and when starting my server and going to my app i am getting this error..




the error refers to this line...

<jsp:useBean id="add" class="personal.java.Data" scope="session"/>

however i havent made any changes to my code and i have no idea why is this happening, any help??
 
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Is the class file for personal.java.Data where it belongs?
 
Eduardo Ponce de Leon
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Yes, my 'Data.java' is under my src folder 'personal.java'!!
 
Bear Bibeault
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I did not ask about the Java file, which is completely irrelevant, but the compiled class file.
 
Eduardo Ponce de Leon
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I am running my app from eclipse. I clean my project and was able to see my login page and now getting thise error..




that driver is in my referenced libraries folder!! I have no idea what is going on?
 
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Did you added the postgres jar to your applications?
 
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