A - Java Glossary

1. Java Assertions
   In Java 1.4, Assertion is a keyword that is represented by a boolean expression and enables you to test your assumptions about your program. It  evaluates to true, but if the expression is not true, the system will throw an error through an AssertionError.
                     

2. Annotations
   Annotations in computer programming languages provide data about a program that is not part of the program itself by decorating them. They does not impact directly to the operation of the code to which they annotate.

3. Java Ant
   In this section, you will learn about the java ant tool. Apache Ant is a software tool, which is similar to “make” (make is a utility for automatically building large applications) but is written in the Java language, requires the Java platform and is best suited for building Java projects.                        

4. Java Array Length
   In this section, you will learn about the java array length.

5. Java Abstract Class
   An abstract class is a class that is declared by using the abstract keyword. It may or may not have abstract methods. Abstract classes cannot be instantiated, but they can be extended into sub-classes.               

6. Interface Vs Abstract Class
   Main reason for the existence of interfaces in Java is: to support multiple inheritance. Languages supporting multiple implementation inheritance, an interface is equivalent to a fully abstract class (a class with only public abstract members).           

7. JSP Actions
   JSP actions are XML tags that forces the server to directly use the server to the existing components or control the behavior of the JSP engine. JSP Actions are made of a usually (XML-based) prefix of "jsp" followed by a colon, followed by the action name followed by one or more attribute parameters.      

8. Abstraction
   In OOPs, these concepts are implemented through a class definition and achieved through the object creation process, programmatically.        

9. The abstract Keyword
   Abstract keyword used for method declaration declares the methods without implementations. 

10. ACID
    ACID is the short form of the four properties guaranteed by transactions: atomicity, consistency, isolation, and durability.

11. Activation
    It is a process that transfers an enterprise bean from secondary storage to memory.

12. Adapter Classes
    In java programming language, adapter class is used to implement an interface having a set of dummy methods.

13. Ant
    Ant is a build tool based on java that provides better support in development of java applications. The applications developed by using the ant build tool resolves various cross platform issues.            

14. Applet
    An applet in java programming language is a small program that only runs under a Web browser. We can automatically download applet as part of a Web page. 

15. Application server
    An Application server is a server side program that is used to provide service to the client simply by recieving request and sending back response to the client. It is also known as appserver.

16. Atomic
    Acronym ACID includes four properties guaranteed by transactions: atomicity, consistency, isolation, and durability.

17. Authentication
    Authentication is the process of ensuring to some in order to access computer services, or that the provider of the service is actually who it claims to be. This types of services works on shared secrets like password or private key.

18. Authorization                 
    Authorization is the process that controls the access rights of principals (that is, persons, processes, and machines) to system resources in order to maintain integrity, confidentiality or availability constraints.