KyaPoocha.com

Related Interview Questions

• What is an EJB primary key? How is it implemented when the database doesn’t have a primary key?  27.10.08

  A primary key is an object that uniquely identifies the entity bean. According to the specification, the primary key must be unique for each entity bean...

• Can I develop an Entity Bean without implementing the create() method in the home interface?  27.10.08

  As per the specifications, there can be 'ZERO' or 'MORE' create() methods defined in an Entity Bean. In cases where create() method is not provided, the...

• What are Entity Bean and Session Bean?  27.10.08

  Entity Bean is a Java class which implements an Enterprise Bean interface and provides the implementation of the business methods. There are two types: Cont...

• What are the different kinds of enterprise beans?  27.10.08

  Stateless session bean- An instance of these non-persistent EJBs provides a service without storing an interaction or conversation state between methods. Any in...

• Is String a primitive data type in Java?  26.09.06

  No String is not a primitive data type in Java, even though it is one of the most extensively used object. Strings in Java are instances of String class defined...

• What is the use of StreamMessage?  01.09.06

  StreamMessage carries a stream of Java primitive types as it's payload. It contains some conveient methods for reading the data stored in the payload. However S...

• What are the methods of Entity Bean?  25.08.06

  An entity bean consists of 4 groups of methods: 1. create methods: To create a new instance of a CMP entity bean, and therefore insert data into the database...

• Can I develop an Entity Bean without implementing the create() method in the home interface?  08.08.06

  As per the specifications, there can be 'ZERO' or 'MORE' create() methods defined in an Entity Bean. In cases where create() method is not provided, the only wa...

• Can the primary key in the entity bean be a Java primitive type such as int?  08.08.06

  The primary key can't be a primitive type--use the primitive wrapper classes, instead. For example, you can use java.lang.Integer as the primary key class, but...

• What is entity bean  11.03.06

  An enterprise bean that represents persistent data maintained in a database. An entity bean can manage its own persistence or can delegate this function to its...