A JavaBean is just a plain old Java object that conforms to certain conventions including the use of accessor functions (getFoo/setFoo) for member access, provision of a default constructor and a few other things like that. An Enterprise JavaBean is a component in a Java EE application server which comes in several flavours, the details … Read more
You can find an answer here. I can suggest using org.reflections You can take a look at it here Reflections reflections = new Reflections(“com.mycompany”); Set<Class<? extends MyInterface>> classes = reflections.getSubTypesOf(MyInterface.class);
I had a similar problem, but my solution is a little simpler. The problem was causesd by renaming the original folder that was referenced by the server definition. Go to Window/Preferences/Server/Runtime Environments, remove the broken reference. Then, click ‘Add’ to create a new reference, select the appropriate tomcat version, click next and you’ll see the … Read more
JAX-WS removed from Java 11 JAX-WS is no longer bundled with Java 11. According to the release notes, Java 11 removed the Java EE modules: java.xml.ws (JAX-WS, plus the related technologies SAAJ and Web Services Metadata) – REMOVED Java 8 – OK Java 9 – DEPRECATED Java 10 – DEPRECATED Java 11 – REMOVED See … Read more
The common containers in Java EE are servlet container and the EJB container, and I see these as examples of IoC(Inversion of Control) containers. The crucial aspects are : Your code does not have any main() or “wait here for a request logic” – the container starts up and configures itself and then eventually initialises … Read more
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
The differences are explained in the JAX-RS specification: 3.3.3 Return Type Resource methods MAY return void, Response, GenericEntity, or another Java type, these return types are mapped to a response entity body as follows: void Results in an empty entity body with a 204 status code. Response Results in an entity body mapped from the … Read more
First of all, Spring and EJB(+JTA) are competing technologies and usually not to be used together in the same application. Choose the one or the other. Spring or EJB(+JTA). I won’t tell you which to choose, I will only tell you a bit of history and the facts so that you can easier make the … Read more
Despite this question being rather old, I had to deal with a similar warning and wanted to share what I found out. First of all this is a warning and not an error. So there is no need to worry too much about it. Basically it means, that Tomcat does not know what to do … Read more
This is a very subjective question. I personally disagree that article and find that it’s giving really bad advice to starters. Model Managed-Bean: This type of managed-bean participates in the “Model” concern of the MVC design pattern. When you see the word “model” — think DATA. A JSF model-bean should be a POJO that follows … Read more