?
Solved

Netbeans java

Posted on 2012-04-04
6
Medium Priority
?
433 Views
Last Modified: 2012-06-21
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
0
Comment
Question by:sargent240
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
6 Comments
 

Author Comment

by:sargent240
ID: 37809239
I might add, the code in line 779 is generated by Netbeans.
0
 
LVL 12

Expert Comment

by:Sharon Seth
ID: 37810179
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 ?
0
 

Author Comment

by:sargent240
ID: 37811828
I don't have any idea how to go about that,  can you get me started?
Thanks.
0
Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

 
LVL 12

Accepted Solution

by:
Sharon Seth earned 2000 total points
ID: 37822480
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
0
 

Author Comment

by:sargent240
ID: 37842888
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
0
 

Author Closing Comment

by:sargent240
ID: 37913229
Found the problem thanks.
0

Featured Post

Percona Live Europe 2017 | Sep 25 - 27, 2017

The Percona Live Open Source Database Conference Europe 2017 is the premier event for the diverse and active European open source database community, as well as businesses that develop and use open source database software.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You may or may not be familiar with Kodi (http://www.kodi.tv) the open source software media player and entertainment hub that can be installed on Linux, OSX, Windows, iOS, and Android.  Kodi which started off as X-Box Media Center (XBMC) many years…
In this post we will learn different types of Android Layout and some basics of an Android App.
This video teaches viewers about errors in exception handling.
Viewers will learn how to turn a Live Set into a compressed Live Pack file, and how to install Live Packs. Make: File > Collect All And Save: File > Manage Files: Click Manage Project: Click Create Pack: Select save location: Install: Doub…
Suggested Courses

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question