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problem : For input string: " "

 
bee fouda
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Eclipse IDE Postgres Database Tomcat Server
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i have a problem that i didn't understand
and i have no idea how to resolved
please i need your help

here is the problem


my Managed bean


my Dao



my html file

 
Tim Holloway
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Android Eclipse IDE Linux
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I cannot see the total problem - that would be more work than they pay me for - but I did notice 2 things:

1. You should almost always wrap a Collection (List or Array) that is being used as a table model object inside a JSF DataModel object and use that object as the dataTable's value.

2. The "get" method is going to be invoked multiple times (often 5 times or more), so doing a database fetch within the "get" or its sub-routines is not only very expensive in terms of performance, but may actually return inconsistent data in the event that other processes are updating the database at the time.
 
Don't get me started about those stupid light bulbs.
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