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<title>J</title>
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<a name="j"></a>
<h2 id="j">J</h2>
<p>Return to <a href="as4glos.htm#as4glos">Glossary</a>.</p>
<dl>
<dt id="x2394203" class="bold">
<a name="x2394203"></a>J2EE</dt>
<dd>See <a href="rzaatj.htm#x2115822">Java&trade; 2 Platform Enterprise Edition</a>.</dd>
<dt id="x2226331" class="bold">
<a name="x2226331"></a>J2SE</dt>
<dd>See <a href="rzaatj.htm#x2226327">Java 2 Platform Standard Edition</a>.</dd>
<dt id="x2027611" class="bold">
<a name="x2027611"></a>Jamo</dt>
<dd>Elements of Korean written language.
Korean alphabet.</dd>
<dt id="x2027616" class="bold">
<a name="x2027616"></a>Japanese basic-Kanji character set</dt>
<dd>A subset of Japanese DBCS, consisting of commonly used Kanji characters. There
are 3226 Kanji characters in this set.</dd>
<dt id="x2027621" class="bold">
<a name="x2027621"></a>Japanese dictionary</dt>
<dd>See <a href="rzaatd.htm#x2019673">DBCS conversion dictionary</a>.</dd>
<dt id="x2027625" class="bold">
<a name="x2027625"></a>Japanese double-byte character set</dt>
<dd>An IBM-defined double-byte character set for Japanese, consisting of the Japanese
non-Kanji set, basic Kanji set, extended Kanji set, and up to 4370 user-definable
characters.</dd>
<dt id="x2027630" class="bold">
<a name="x2027630"></a>Japanese extended-Kanji character set</dt>
<dd>A subset of Japanese DBCS, consisting of less commonly used Kanji characters.
There are 3487 characters in this set.</dd>
<dt id="x2027635" class="bold">
<a name="x2027635"></a>Japanese non-Kanji character set</dt>
<dd>A subset of Japanese DBCS, consisting of non-Kanji characters like Greek,
Russian, Roman numeric, alphanumeric and related symbols, Katakana, Hiragana,
and special symbols. There are 550 characters in this set.</dd>
<dt id="x2400901" class="bold">
<a name="x2400901"></a>JAR</dt>
<dd>See <a href="rzaatj.htm#x2115827">Java archive</a>.</dd>
<dt id="x2027645" class="bold">
<a name="x2027645"></a>Java</dt>
<dd>An object-oriented programming
language for portable interpretive code that supports interaction among remote
objects. Java was developed and specified by Sun Microsystems,
Incorporated.</dd>
<dt id="x2115822" class="bold">
<a name="x2115822"></a>Java 2 Platform Enterprise Edition (J2EE)</dt>
<dd>An environment for developing and deploying enterprise applications,
defined by Sun Microsystems Inc. The J2EE platform consists of a set of services,
application programming interfaces (APIs), and protocols that provide the
functionality for developing multitiered, Web-based applications. (Sun) See
also <a href="rzaatj.htm#x2226327">Java 2 Platform Standard Edition</a>.</dd>
<dt id="x2226327" class="bold">
<a name="x2226327"></a>Java 2 Platform Standard Edition (J2SE)</dt>
<dd>The core Java technology platform. (Sun) See also <a href="rzaatj.htm#x2115822">Java 2 Platform Enterprise Edition</a>, <a href="rzaatj.htm#x2027665">Java Development Kit</a>.</dd>
<dt id="x2027710" class="bold">
<a name="x2027710"></a>Java 2 Software Development Kit Standard
Edition</dt>
<dd>A product of Sun Microsystems, Inc. that implements the Java 2 Platform, Standard Edition. It is a software development kit that
you can use to build applications for the Java 2 Platform, Standard Edition. It includes
both the Java 2 development environment, Standard Edition and Java 2 Runtime Environment, Standard Edition.</dd>
<dt id="x2115827" class="bold">
<a name="x2115827"></a>Java archive (JAR)</dt>
<dd>A compressed
file format for storing all the resources that are required to install and
run a Java program in a single file.</dd>
<dt id="x2027650" class="bold">
<a name="x2027650"></a>JavaBeans&trade;</dt>
<dd>As defined for Java by Sun Microsystems, a portable, platform-independent, reusable
component model. See also <a href="rzaatb.htm#x2015283">bean</a>.</dd>
<dt id="x2027655" class="bold">
<a name="x2027655"></a>Java Database Connectivity (JDBC)</dt>
<dd>An industry standard for database-independent connectivity between the Java platform and a wide range of databases. The JDBC interface provides
a call-level API for SQL-based database access.</dd>
<dt id="x2027660" class="bold">
<a name="x2027660"></a>Java Developer Connection (JDC)</dt>
<dd>A service that is designed for individual developers. JDC provides online
training, product discounts, feature articles, error information, and early
access capabilities.</dd>
<dt id="x2027665" class="bold">
<a name="x2027665"></a>Java Development Kit (JDK)</dt>
<dd>The name of the software development kit that Sun Microsystems provided for
the Java platform, up to and including v 1.1.x. In v 1.2, Sun changed their
product name to Java 2 SDK. Sometimes (erroneously) used to mean the Java platform or as a generic term for Java developer kit. See also <a href="rzaatj.htm#x2226327">Java 2 Platform Standard Edition</a>.</dd>
<dt id="x2027675" class="bold">
<a name="x2027675"></a>Java interpreter</dt>
<dd>A part of
the Java virtual machine that interprets Java class files for a particular hardware
platform.</dd>
<dt id="x2027680" class="bold">
<a name="x2027680"></a>Java Native Interface (JNI)</dt>
<dd>A programming interface that allows Java code to interoperate with functions
that are written in other programming languages.</dd>
<dt id="x2027685" class="bold">
<a name="x2027685"></a>Java Runtime Environment (JRE)</dt>
<dd>A subset of the Sun Microsystems Java Development Kit (JDK) that contains
the core executable programs and files that constitute the standard Java platform.
The JRE includes the Java virtual machine (JVM), core classes,
and supporting files.</dd>
<dt id="x2027690" class="bold">
<a name="x2027690"></a>JavaScript&trade;</dt>
<dd>A Web scripting
language that is used in both browsers and Web servers. (Sun)</dd>
<dt id="x2027700" class="bold">
<a name="x2027700"></a>Java transformer</dt>
<dd>Software that
converts Java bytecode to 64-bit reduced instruction set computer
(RISC) machine instructions.</dd>
<dt id="x2027705" class="bold">
<a name="x2027705"></a>Java virtual machine (JVM)</dt>
<dd>A software implementation of a central processing unit that runs compiled Java code (applets and applications).</dd>
<dt id="x2027715" class="bold">
<a name="x2027715"></a>JCT</dt>
<dd>See <a href="rzaatj.htm#x2027866">journal
control table</a>.</dd>
<dt id="x2027719" class="bold">
<a name="x2027719"></a>JDBC</dt>
<dd>See <a href="rzaatj.htm#x2027655">Java Database Connectivity</a>.</dd>
<dt id="x2027723" class="bold">
<a name="x2027723"></a>JDC</dt>
<dd>See <a href="rzaatj.htm#x2027660">Java Developer Connection</a>.</dd>
<dt id="x2027727" class="bold">
<a name="x2027727"></a>JDK</dt>
<dd>See <a href="rzaatj.htm#x2027665">Java Development Kit</a>.</dd>
<dt id="x2009355" class="bold">
<a name="x2009355"></a>JES</dt>
<dd>See <a href="rzaatj.htm#x2002667">Job
Entry Subsystem</a>.</dd>
<dt id="x2027731" class="bold">
<a name="x2027731"></a>JID</dt>
<dd>See <a href="rzaatj.htm#x2027881">journal
identifier</a>.</dd>
<dt id="x2192124" class="bold">
<a name="x2192124"></a>JIT compiler</dt>
<dd>See <a href="rzaatj.htm#x2027924">Just-In-Time compiler</a>.</dd>
<dt id="x2027735" class="bold">
<a name="x2027735"></a>jitter</dt>
<dd>A signal distortion through
a network that causes packets to arrive out of order or differently than their
original timing reference.</dd>
<dt id="x2027740" class="bold">
<a name="x2027740"></a>JNI</dt>
<dd>See <a href="rzaatj.htm#x2027680">Java Native Interface</a>.</dd>
<dt id="x2007884" class="bold">
<a name="x2007884"></a>job</dt>
<dd>(1) See <a href="rzaata.htm#x2000181">application
process</a>.</dd>
<dd>(2) A separately executable unit of work defined by a
user, and run by a computer.</dd>
<dd>(3) In the Integrated Language Environment&reg; (ILE) model, a collection of resources and data that consists of one
or more activation groups.</dd>
<dt id="x2027753" class="bold">
<a name="x2027753"></a>job accounting</dt>
<dd>A system function
that collects information about a job's use of system resources and records
that information in a journal.</dd>
<dt id="x2027758" class="bold">
<a name="x2027758"></a>job action</dt>
<dd>The network attribute
that controls the handling of a job submitted from remote locations through
either the SNADS network or RSCS.</dd>
<dt id="x2027763" class="bold">
<a name="x2027763"></a>job classification</dt>
<dd>In performance,
the process of identifying how jobs that are running on the system are grouped
into workloads. Files created during this process can be used again to analyze
data from different intervals.</dd>
<dt id="x2027768" class="bold">
<a name="x2027768"></a>job control authority</dt>
<dd>A special authority
that allows a user to: change, delete, display, hold, and release all files
on output queues; hold, release, and clear job queues and output queues; start
writers to output queues; hold, release, change, and end other users' jobs;
change the class attributes of a job; end subsystems; and start (do an IPL
of) the system.</dd>
<dt id="x2027773" class="bold">
<a name="x2027773"></a>job date</dt>
<dd>The date associated with
a job. The job date usually assumes the system date, but it can be changed
by the user.</dd>
<dt id="x2027778" class="bold">
<a name="x2027778"></a>job description</dt>
<dd>A system object that
defines how a job is to be processed. The system-recognized identifier for
the object type is *JOBD.</dd>
<dt id="x2002667" class="bold">
<a name="x2002667"></a>Job Entry Subsystem (JES)</dt>
<dd>An IBM&reg; licensed
program that receives jobs into the system and processes all output data that
is produced by jobs.</dd>
<dt id="x2027783" class="bold">
<a name="x2027783"></a>job log</dt>
<dd>A record of requests submitted
to the system by a job, the messages related to the requests, and the actions
performed by the system on the job. The job log is maintained by the system
program.</dd>
<dt id="x2027788" class="bold">
<a name="x2027788"></a>job message queue</dt>
<dd>A message queue
that is created for each job. A job message queue receives requests to be
processed (such as commands) and sends messages that result from processing
the requests. A job message queue consists of an external message queue and
a set of program message queues.</dd>
<dt id="x2027793" class="bold">
<a name="x2027793"></a>job name</dt>
<dd>The name of the job as identified
to the system. For an interactive job, the job is assigned the name of the
work station at which the job was started; for a batch job, the name is specified
in the command used to submit the job. See also <a href="rzaatq.htm#x2035550">qualified
job name</a>.</dd>
<dt id="x2027798" class="bold">
<a name="x2027798"></a>job queue</dt>
<dd>An object that contains
a list of batch jobs waiting to be processed by the system. The system-recognized
identifier for the object type is *JOBQ.</dd>
<dt id="x2027803" class="bold">
<a name="x2027803"></a>job schedule</dt>
<dd>An object that contains
entries for jobs to be submitted at a specified time and date. These job schedule
entries can also be used to schedule recurring jobs. The system-recognized
identifier for the object type is *JOBSCD.</dd>
<dt id="x2027808" class="bold">
<a name="x2027808"></a>job schedule entry</dt>
<dd>An entry in the
job schedule object that describes the job to be submitted. The user can specify
attributes of the job and when the job will be submitted.</dd>
<dt id="x2027813" class="bold">
<a name="x2027813"></a>job schedule function</dt>
<dd>A function
of the operating system that allows time-dependent scheduling for batch jobs.</dd>
<dt id="x2002672" class="bold">
<a name="x2002672"></a>job scheduler</dt>
<dd>The IBM licensed program
that is a job scheduling system designed to allow unattended operations, to
automate operator functions, and to control report distribution.</dd>
<dt id="x2002677" class="bold">
<a name="x2002677"></a>join</dt>
<dd>(1) An operation that combines data
from two or more files using specified fields.</dd>
<dd>(2) An SQL relational
operation that allows retrieval of data from two or more tables based on matching
column values.</dd>
<dd>(3) To become a new member of an entity such as a cluster.</dd>
<dt id="x2027831" class="bold">
<a name="x2027831"></a>join field</dt>
<dd>A comparison field that
identifies records from two files to be combined into one record.</dd>
<dt id="x2027836" class="bold">
<a name="x2027836"></a>join level specification</dt>
<dd>For a join
logical file, a data description specification coded between the record and
field level that defines how to join two physical files.</dd>
<dt id="x2027841" class="bold">
<a name="x2027841"></a>join logical file</dt>
<dd>A logical file
that combines (in one record format) fields from two or more physical files.</dd>
<dt id="x2027846" class="bold">
<a name="x2027846"></a>join test</dt>
<dd>A condition that determines
how files and record formats are joined for use in a query.</dd>
<dt id="x2027851" class="bold">
<a name="x2027851"></a>journal</dt>
<dd>A system object that identifies
the objects being journaled, the current journal receiver, and all the journal
receivers on the system for the journal. The system-recognized identifier
for the object type is *JRN.</dd>
<dt id="x2027856" class="bold">
<a name="x2027856"></a>journal code</dt>
<dd>A one-character code
in a journal entry that identifies the category of the journal entry. For
example, F identifies an operation on a file; R identifies an operation on
a record, and so forth.</dd>
<dt id="x2027861" class="bold">
<a name="x2027861"></a>journal control</dt>
<dd>The ability for the CICS&reg; user to write CICS journal records when required by the application for
auditing purposes.</dd>
<dt id="x2027866" class="bold">
<a name="x2027866"></a>journal control table (JCT)</dt>
<dd>A table
that contains a description of the CICS user journals along with their access
characteristics.</dd>
<dt id="x2027871" class="bold">
<a name="x2027871"></a>journal entry</dt>
<dd>A record in a journal
receiver that contains information about a journaled change or other activity
that is journaled.</dd>
<dt id="x2027876" class="bold">
<a name="x2027876"></a>journal entry type</dt>
<dd>A two-character
field in a journal entry that identifies the type of operation of a system-generated
journal entry or the type of journal entry of a user-generated journal entry;
for example, PT is the entry type for a write operation.</dd>
<dt id="x2027881" class="bold">
<a name="x2027881"></a>journal identifier (JID)</dt>
<dd>A unique
identifier that is assigned to a particular object when journaling is started
for that object. Journal entries are associated with a particular object by
this JID value.</dd>
<dt id="x2027886" class="bold">
<a name="x2027886"></a>journaling</dt>
<dd>The process of recording,
in a journal, the changes made to objects, such as physical file members or
access paths, or the depositing of journal entries by system or user functions.</dd>
<dt id="x2027896" class="bold">
<a name="x2027896"></a>JRE</dt>
<dd>See <a href="rzaatj.htm#x2027685">Java Runtime Environment</a>.</dd>
<dt id="x2027904" class="bold">
<a name="x2027904"></a>Julian date</dt>
<dd>A date format that contains
the year in positions 1 and 2, and the day in positions 3 through 5. The day
is represented as 1 through 366, right-adjusted, with zeros in the unused
high-order positions. For example, the Julian date for April 6, 1987 is 87096.</dd>
<dt id="x2027909" class="bold">
<a name="x2027909"></a>jumper</dt>
<dd>A small piece of plastic-covered
metal that is used to connect two contacts and complete a circuit.</dd>
<dt id="x2027919" class="bold">
<a name="x2027919"></a>justify</dt>
<dd>To adjust text so that line
endings are even.</dd>
<dt id="x2027924" class="bold">
<a name="x2027924"></a>Just-In-Time compiler (JIT compiler)</dt>
<dd>In Java, a specific compiler that converts Java bytecodes into specific code at run
time for better performance.</dd>
<dt id="x2057548" class="bold">
<a name="x2057548"></a>JVM</dt>
<dd>See <a href="rzaatj.htm#x2027705">Java virtual machine</a>.</dd></dl>
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