JPA Entity Default constructor

Question

In JPA entity class , What is the use of having constructor either default or argument constructor. I have read many articles regarding that. But none of that give an detailed explanation about that.

I guess you came across this question? http://stackoverflow.com/questions/1027385/empty-constructors-and-setters-on-jpa-entites — dbalakirev, Jun 13 '12 at 08:27

score 2 · Answer 1 · edited May 23 '17 at 12:21

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So that entity manager could create an entity and then initialise the fields through the setters.

For example here:

MeEntity entity = em.find(MyEntity.class, id);

See here as well: Java default constructor

edited May 23 '17 at 12:21

Community

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answered Jun 13 '12 at 08:25

maksimov

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Then what is the use of creating the default constructor automatically by the jvm – user1227591 Jun 13 '12 at 08:26
Default constructor is only assumed/generated when there's no other constructor. – maksimov Jun 13 '12 at 08:29

JPA Entity Default constructor

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