Posts by elbenevides • 27 points
5 posts
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viewsQ: Popular Jtable with BD data without using Defaulttablemodel
I’m doing a whole layered project and I read somewhere that the use of Defaulttablemodel is not very recommended. I am trying to receive values registered in the BD and fill a jTable with these…
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viewsQ: How do I validate login when the user changes fields?
How can I check if a login has already been registered? Below is an excerpt from an attempt I made. If you can help me thank you. This is an excerpt from the DAO layer. public boolean validarLogin…
javaasked elbenevides 27 -
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answers1752
viewsQ: How to verify if user has already been registered in the database?
How can I check if user is already registered? For example, when registering a user check if the login has already been saved in the BD. DAO was like this: public boolean validarLogin (String login)…
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answer568
viewsQ: Psqlexception: No results returned by query
I cannot identify the error that is returning when trying to insert data to the BD. I believe the error is in the insert function. The error returned is: Exception in thread "main"…
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answer352
viewsQ: Error trying to insert data to Postgresql
I’m having trouble entering information to the BD. I believe the error is in the DAO layer more specifically in the insert function. You could help me find this mistake? CONNECTIONFACTORY package…