Netbeans java

Below is an error I get when I compile the attached program I have written.  I have not looked at the code for a few weeks as I had a question about a problem in the code and the advice I followed produced the error below.  I get the error when I try to run the program from Netbeans.  I am using Netbeans to write the program.  I have absolutely no idea how to get back where I was.  Before following the instructions, which I don't remember everything was working.  I was simply trying to add another function.  Any ideas anyone?

run:
Exception in thread "main" javax.persistence.PersistenceException: No Persistence provider for EntityManager named null:  The following providers:
oracle.toplink.essentials.PersistenceProvider
oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
Returned null to createEntityManagerFactory.

      at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)
      at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
      at diyjdj.DiyDjMain.initComponents(DiyDjMain.java:779)
      at diyjdj.DiyDjMain.<init>(DiyDjMain.java:747)
      at diyjdj.Main.main(Main.java:19)
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)


I have no idea what is going on in line 779.  The source code is attached.  Thanks!
diy-dj.java
sargent240Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

sargent240Author Commented:
I might add, the code in line 779 is generated by Netbeans.
Sharon SethCommented:
java.beans.Beans.isDesignTime() is evaluating to false and the code at that line is specifically using an entity manager called Null. Can you see if you can set isDesignTime() to True ?
sargent240Author Commented:
I don't have any idea how to go about that,  can you get me started?
Thanks.
CompTIA Network+

Prepare for the CompTIA Network+ exam by learning how to troubleshoot, configure, and manage both wired and wireless networks.

Sharon SethCommented:
Set the following property somewhere before you hit line 779 , maybe set it in your main()
java.beans.Beans.setDesignTime(true) .

I am  assuming this would skip the code that tries to create an entity manager factory. If you are able to go beyond this point , we will look at what needs to be done next

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sargent240Author Commented:
sharonseth,

Been buried with a couple things last few days.  Will be looking at our suggestion over the weekend.  Thanks for the suggestion.  I'll keep you posted
sargent240Author Commented:
Found the problem thanks.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
MultiMedia Applications

From novice to tech pro — start learning today.