Java Reference
In-Depth Information
javah— A software tool that generates C header
and source files, used for implementing native
methods. Part of the Java Development Kit.
javap— A software tool that disassembles a
Java class file, containing unreadable bytecode,
into a human-readable version. Part of the Java
Development Kit.
jdb— The Java command-line debugger. Part of
the Java Development Kit.
JDK— See Java Development Kit.
JVM— See Java Virtual Machine.
kilobit (Kb)— A unit of binary storage, equal to
2 10 , or 1024 bits.
kilobyte (K or KB)— A unit of binary storage,
equal to 2 10 , or 1024 bytes.
label— (1) A graphical user interface compo-
nent that displays text, an image, or both. (2)
An identifier in Java used to specify a particular
line of code. The break and continue state-
ments can jump to a specific, labeled line in the
program.
LAN— See local-area network.
last-in, first-out (LIFO)— A data management
technique in which the last value that is stored
in a data structure is the first value that comes
out. See also first-in, first-out; stack.
layout manager— An object that specifies the
presentation of graphical user interface compo-
nents. Each container is governed by a particu-
lar layout manager.
lexicographic ordering— The ordering of char-
acters and strings based on a particular charac-
ter set such as Unicode.
life cycle— The stages through which a software
product is developed and used.
LIFO— See last-in, first-out.
linear search— A search algorithm in which
each item in the list is compared to the target
value until the target is found or the list is
exhausted. See also binary search.
link— (1) A designation in a hypertext docu-
ment that “jumps” to a new document (or to
a new part of the same document) when fol-
lowed. (2) A connection between two items in
a dynamically linked structure, represented as
an object reference.
linked list— A dynamic data structure in which
objects are linked using references.
list— A graphical user interface component that
presents a list of items from which the user can
choose. The current selection is highlighted in
the list. See also combo box.
listener— An object that is set up to respond to
an event when it occurs.
listener adaptor class— A class defined with
empty methods corresponding to the methods
invoked when particular events occur. A lis-
tener object can be derived from an adaptor
class. See also listener interface.
listener interface— A Java interface that defines
the methods invoked when particular events
occur. A listener object can be created by imple-
menting a listener interface. See also listener
adaptor class.
literal— A primitive value used explicitly in a
program, such as the numeric literal 147 or the
string literal “hello”.
local-area network (LAN)— A computer net-
work designed to span short distances and con-
nect a relatively small number of computers.
See also wide-area network.
local variable— A variable defined within a
method, which does not exist except during the
execution of the method.
logical error— A problem stemming from inap-
propriate processing in the code. It does not
cause an abnormal termination of the program,
 
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