The accepted answer requires mocking a lot of code, including the persistence layer. Use an embedded container to test the actual beans, instead; otherwise, mocking the persistence layer results in code that barely tests anything useful. Use a session bean with an entity manager that references a persistence unit: @Stateless public class CommentService { @PersistenceContext(unitName … Read more
If it’s a managed bean as you say, you should do this in a method annotated with @PostConstruct public class Person { private List<String> friends; @PostConstruct public void init(){ friends = new ArrayList<String>(); } //getter and setter… } The practice of doing any initialization in the getter and setter is generally frowned upon within the … Read more
In your client code you are not specifying the content type of the data you are sending – so Jersey is not able to locate the right MessageBodyWritter to serialize the b1 object. Modify the last line of your main method as follows: ClientResponse response = resource.type(MediaType.APPLICATION_XML).put(ClientResponse.class, b1); And add @XmlRootElement annotation to class B … Read more
An important motivation for having EJB beans in a separate JAR is for the age old separation of business logic and view logic. Since EJBs are supposed to concentrate solely on business logic, it makes sense to put them into a separate module. This is exactly what the traditional Java Enterprise Archive facilitates. The EJB … Read more
In Servlets 3.0 you don’t need a web.xml for many cases, however, sometimes it’s required or just useful. Your case is just one of them – there is no special annotations to define welcome-file list or error-pages. Another thing is – would you really like to have them hardcoded? There are some valid use-cases for … Read more
How about this? public enum RoleType { STUDENT(Names.STUDENT), TEACHER(Names.TEACHER), DEANERY(Names.DEANERY); public class Names{ public static final String STUDENT = “Student”; public static final String TEACHER = “Teacher”; public static final String DEANERY = “Deanery”; } private final String label; private RoleType(String label) { this.label = label; } public String toString() { return this.label; } } … Read more
It is currently indeed a bit confusing as there are now multiple component models in Java EE. They are CDI, EJB3 and JSF Managed Beans. CDI is the new kid on the block. CDI beans feature dependency injection, scoping and an event bus. CDI beans are the most flexible with respect to injection and scoping. … Read more
Taking a look at jsr always works! 8.2.1.6.3 Jar Files One or more JAR files may be specified using the jar-file elements instead of, or in addition to the mapping files specified in the mapping-file elements. If specified, these JAR files will >be searched for managed persistence classes, and any mapping metadata annotations found on … Read more
First of all let me do some clarifications: Managed bean definition : generally a managed bean is an object that its life cycle (construction, destruction, etc) is managed by a container. In Java ee we have many containers that manage life cycle of their objects, like JSF container, EJB container, CDI container, Servlet container, etc. … Read more