J2SE

The part of an entity bean's deployment descriptor that defines the bean's persistent fields and relationships.

A logical name that is referenced in EJB QL queries.

The process of transferring an enterprise bean from secondary storage to memory.

Accessing a resource without authentication.

The process of superimposing one image on another to create a single image.

Consists of class libraries, a Java virtual machine (JVM) and class loader (which comprise the runtime environment) and a compiler, debugger and other tools (which comprise the development kit). In addition, the runtime platform is subject to a set of compatibility requirements to ensure consistent and compatible implementations. Implementations that meet the compatibility requirements may qualify for Sun's targeted compatibility brands. Java 2 is the current generation of the Java Platform.

In a program, explanatory text that is ignored by the compiler. In programs written in the Java programming language, comments are delimited using

//

or

/*...*/.

The smallest unit of source code that can be compiled. In the current implementation of the Java platform, the compilation unit is a file.

A program to translate source code into code to be executed by a computer. The Java compiler translates source code written in the Java programming language into bytecode for the Java virtual machine1. See also interpreter.

Works together with the code attribute in the <APPLET> tag to give a complete specification of where to find the main applet class file: code specifies the name of the file, and codebase specifies the URL of the directory containing the file.

An environmental variable which tells the Java virtual machine1 and Java technology-based applications where to find the class libraries, including user-defined class libraries.

A data item associated with a particular class as a whole--not with particular instances of the class. Class variables are defined in class definitions. Also called a static field. See also instance variable.

In the client/server model of communications, the client is a process that remotely accesses resources of a compute server, such as compute power and large memory capacity.

A method that is invoked without reference to a particular object. Class methods affect the class as a whole, not a particular instance of the class. Also called a static method. See also instance method.

Class X is "derived from" class Y if class X extends class Y. See also subclass, superclass.

Running in more than one address space.

A segment of code in which a thread uses resources (such as certain instance variables) that can be used by other threads, but that must not be used by them at the same time.

A Java keyword optionally used after all case conditions in a switch statement. If all case conditions are not matched by the value of the switch variable, the default keyword will be executed.

The required set of APIs in a Java platform edition which must be supported in any and all compatible implementations.