Java terms starting with D

47 terms

daemon thread Daemon threads are non-user threads. They are typically used to carry out low-priority tasks that should not take priority over the main task of the…
data A representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or processing by humans or by…
data type The type of information that one field can store, for example, text, rich text, numbers, keywords, and time.
datagram A packet of information passed between two communicating processes across a network.
DDP Document-driven programming. The use of XML to define applications.
De Morgan's Theorem Two rules that can help to simplify boolean expressions involving multiple logical-not operators in combination with other boolean operators.
deadlock A situation that arises when two threads each acquires the lock to one of a set of resources that they both need.
decimal Number representation in base 10. In base 10, the digits 0 to 9 are used. Digit positions represent successive powers of 10.
Deck A deck is a collection of one or more WML cards that can be downloaded, to a mobile phone, as a single entity.
declaration a document in which an applicant for patent declares, under penalty of fine or imprisonment, or both (18 USC 1001), that (1) he or she is the original or…
declaration and initialization A statement in which a variable is declared and immediately given its initial value.
declarative security Mechanisms used in an application that are expressed in a declarative syntax in a deployment descriptor.
decrement operator An operator (--) that adds one to its operand. It has two forms: pre-decrement (--x) and post-decrement (x--).
deep copy A copy of an object in which copies of all the object's sub-components are also made. The resulting object might, in effect, be a clone of the original.
Default Default occurs when a debtor is unable to meet the legal obligation of debt repayment, one form of which is the failure to promptly pay interest or…
default initial value The default value of any variable not explicitly initialized when it is declared.
default label The destination for all values used in a switch statement expression that do not have explicit case labels. A default label is optional.
definition A declaration that reserves storage (for data) or provides implementation (for methods). See also declaration.
delegation An assignment of administrative responsibility to a user, computer, group, or organization. [Exchange 2003]
deployer A person who installs J2EE modules and applications into an operational environment.
deployment (1) The placement of force elements in battle positions to obtain a higher state of readiness.
deployment descriptor An XML file provided with each module and J2EE application that describes how they should be deployed.
deprecated Something that has been made obsolete by later versions of the API. Deprecated methods should not be used because there is no guarantee that they will…
deprecation Refers to a class, interface, constructor, method or field that is no longer recommended, and may cease to exist in a future version.
derived from Class X is "derived from" class Y if class X extends class Y. See also subclass, superclass.
destination In spatial interaction, the location of the end of a trip. For example, a shop or an office where a consumer or a worker is going.
Digest authentication An authentication method that prompts the user for a user name and a password, also called credentials, which are hashed with other data before being…
direct recursion Recursion that results from a method calling itself.
discrete simulation In a discrete simulation, time passes at an irregular rate that is determined by the primary events of interest in the simulation.
disk drive A hardware device used to store data. They come in many forms, such as compact disks, floppy disks and hard disks.
distributed Running in more than one address space.
distributed application An application made up of distinct components running in separate runtime environments, usually on different platforms connected via a network.
divide and conquer An approach to problem solving that attempts to reduce an overall single large problem into multiple simpler problems.
DO Designated Office the national Office or intergovernmental organization of or acting for the Contracting State designated by the applicant under Chapter I…
do loop One of Java's three control structures used for looping. The other two are the while loop and for loop.
document Fed. R. Civ. P. 34(a) defines a document as including writings, drawings, graphs, charts, photographs, phonorecords, and other data compilations.
Document Object Model An API for accessing and manipulating XML documents as tree structures. DOM provides platform-neutral, language-neutral interfaces that enables programs…
document root The top-level directory of a WAR. The document root is where JSP pages, client-side classes and archives, and static Web resources are stored.
DOM See Document Object Model.
dotted decimal notation The notation used to represent the four byte values of an IP address. Each byte is represented as a value between 0 and 255, for instance 129.12.0.1.
Double Up System of Betting - A betting system whereby bets are doubled after a loss in hopes of recouping the previous loss.
double buffering A graphics technique used to smooth animation. The next version of an image is drawn `behind the scenes' and then displayed in its entirety when the…
double precision Refers to a high level of coordinate accuracy based on the possible number of significant digits that can be stored for each coordinate.
downcast A cast towards an object's dynamic type - that is, `down' the inheritance hierarchy.
DTD document type definition - a format specification file that accompanies documents prepared according to SGML (standard generalized markup language)…
durable subscription In a JMS publish/subscribe messaging system, a subscription that continues to exist whether or not there is a current active subscriber object.
dynamic type The dynamic type of an object is the name of the class used to construct it. See static type.