• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Bear Bibeault
  • Tim Cooke
  • Junilu Lacar
Sheriffs:
  • Paul Clapham
  • Devaka Cooray
  • Knute Snortum
Saloon Keepers:
  • Ron McLeod
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • Frits Walraven
Bartenders:
  • Carey Brown
  • salvin francis
  • Claude Moore

Error on @Entity  RSS feed

 
Ranch Hand
Posts: 210
1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hello,
I work with JPA in a site drive project, I encounter a problem with the @Entity annotation that gives me an error that I do not understand.

here is my source code:




Error on @Entity : The Java class for mapped type "Article" must define a non-private zero-argument constructor

I tried several syntax but I do not see where is the error!

How to do ?
 
Creator of Enthuware JWS+ V6
Posts: 3255
289
Android Chrome Eclipse IDE
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
The error says it all, an entity class must have a no-argument constructor, add this:

 
Sheriff
Posts: 21716
102
Chrome Eclipse IDE Java Spring Ubuntu VI Editor Windows
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You can make it protected or package-private, it doesn't need to be public. It can't be private though.
 
If I'd had more time, I would have written a shorter letter. -T.S. Eliot such a short, tiny ad:
Create Edit Print & Convert PDF Using Free API with Java
https://coderanch.com/wiki/703735/Create-Convert-PDF-Free-Spire
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!