Q&A
| Q1: | How many Java classes and interfaces must you write to create an EJB? |
| A1: | The EJB writer must define a remote (or business) interface, a home interface, and the bean implementation itself. |
| Q2: | Why does an EJB run inside a container? |
| A2: | The container provides many services to the EJB, including distribution, lifecycle, naming/registration, transaction management, security/authentication, and persistence. If the container did not exist, you would have to write all the code to interact with these services yourself. |
| Q3: | What issues are there in passing an object as part of a remote method call? |
| A3: | To be passed as an argument or return type, an object must be either serializable or remote. If it is neither of these, an error will occur at runtime. ... |
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