What is Java domain model?

java domain-model
John picture John · Feb 6, 2011 · Viewed 45.3k times · Source

I am studying a Spring book and they mention Java domain model.
What is that?

Answer

Michael Borgwardt picture Michael Borgwardt · Feb 6, 2011

A domain model (the term is not at all Java specific) is a class that models something in the problem domain, as opposed to a class that exists for technical implementation reasons.

Domain model instances often need to be persisted in a database, and in Java, they typically conform to the Java Beans specification, i.e. they have get and set methods to represent individual properties and a parameterless constructor. Spring and other frameworks allow you to access these properties directly in your JSPs.

For example, in a shop application, some of your domain model classes would be Product, Order, ShoppingCart and Customer.

Related questions

Iterator versus Stream of Java 8

To take advantage of the wide range of query methods included in java.util.stream of Jdk 8 I am attempted to design domain models where getters of relationship with * multiplicity (with zero or more instances ) return a Stream<T&…

Read More
what's the difference between service layer and domain model layer

for example, I have a user table, to be layer-ing, I create such POJOs: UserEntity.java UserDao.java UserBO.java (business object, domain model?) UserService.java (for service layer) what's the difference between UserBO.java and UserService.java? why we …

Read More
Is there a rich domain model example?

I'm looking for a simple example to illustrate the benefits of using a rich domain model. Ideally, I'd like a before and after code listing (which should be as short as possible). The before code listing should show the problem …

Read More