Java 音标拼音: [dʒ'ɑvə]
n .
爪哇,爪哇产的咖啡,咖啡;一种网络编程语言，编译后可在不同的平台上运行，支持多媒体
爪哇,爪哇产的咖啡,咖啡;一种网络编程语言，编译後可在不同的平台上运行，支援多媒体
Java n 1 :
an island in Indonesia to the south of Borneo ;
one of the world '
s most densely populated regions 2 :
a beverage consisting of an infusion of ground coffee beans ;
"
he ordered a cup of coffee " [
synonym : {
coffee }, {
java }]
3 :
a platform -
independent object -
oriented programming language Java \
Ja "
va \ (
j [
aum ]"
v [.
a ]),
n .
1 .
One of the islands of the Malay Archipelago belonging to the Netherlands .
[
1913 Webster ]
2 .
Java coffee ,
a kind of coffee brought from Java .
[
1913 Webster ]
3 . (
Computers ) [
all capitals ]
an object -
oriented computer programming language ,
derived largely from {
C },
used widely for design and display of web pages on the world -
wide web .
It is an interpreted language ,
and has been suggested as a platform -
independent code to allow execution of the same progam under multiple operating systems without recompiling .
The language is still (
1997 )
under active development ,
and is evolving .
[
GG PJC ]
{
Java cat } (
Zool .),
the musang .
{
Java sparrow } (
Zool .),
a species of finch ({
Padda oryzivora }),
native of Java ,
but very commonly kept as a cage bird ; --
called also {
ricebird },
and {
paddy bird }.
In the male the upper parts are glaucous gray ,
the head and tail black ,
the under parts delicate rose ,
and the cheeks white .
The bill is large and red .
A white variety is also kept as a cage bird .
[
1913 Webster ]
higher programming language \
higher programming language \
n .
(
Computers )
A computer programming language with an instruction set allowing one instruction to code for several assembly language instructions .
Note :
The aggregation of several assembly -
language instructions into one instruction allows much greater efficiency in writing computer programs .
Most programs are now written in some higher programming language ,
such as {
BASIC }, {
FORTRAN }, {
COBOL }, {
C }, {
C },
{
PROLOG },
or {
JAVA }.
[
PJC ]
(After the Indonesian
island , a source of {programming fluid }) A simple ,
object -oriented }, {distributed }, {interpreted }, robust ,
secure , {architecture -neutral }, {portable }, {multithreaded },
dynamic , buzzword -compliant , general -purpose programming
language developed by {Sun Microsystems } in the early 1990s
initially for set -top television controllers ) and released
to the public in 1995 .
Java first became popular as the earliest portable dynamic
client -side content for the {World -Wide Web } in the form of
platform }-independent {Java applets }. In the late 1990s and
into the 2000s it also became very popular on the server side ,
where an entire set of {APIs } defines the {J2EE }.
Java is both a set of public specifications (controlled by
Sun Microsystems } through the {JCP }) and a series of
implementations of those specifications .
Java is syntactially similar to {C } without user -definable
operator overloading }, (though it does have {method }
overloading ), without {multiple inheritance } and extensive
automatic {coercions }. It has automatic {garbage collection }.
Java extends {C }'s {object -oriented } facilities with those
of {Objective C } for {dynamic method resolution }.
Whereas programs in C and similar languages are compiled and
linked to platform -specific binary executables , Java programs
are typically compiled to portable {architecture -neutral }
bytecode } ".class " files , which are run using a {Java Virtual
Machine }. The JVM is also called an {interpreter }, though it
is more correct to say that it uses {Just -In -Time Compilation }
to convert the {bytecode } into {native } {machine code },
yielding greater efficiency than most interpreted languages ,
rivalling C for many long -running , non -GUI applications .
The run -time system is typically written in {POSIX }-compliant
ANSI C } or {C }. Some implementations allow Java class
files to be translated into {native } {machine code } during or
after compilation .
The Java compiler and {linker } both enforce {strong type
checking } - procedures must be explicitly typed . Java
aids in the creation of {virus }-free , tamper -free systems
with {authentication } based on {public -key encryption }.
Java has an extensive library of routines for all kinds of
programming tasks , rivalling that of other languages . For
example , the {java .net } package supports {TCP /IP } {protocols }
like {HTTP } and {FTP }. Java applications can access objects
across the {Internet } via {URLs } almost as easily as on the
local {file system }. There are also capabilities for several
types of distributed applications .
The Java {GUI } libraries provide portable interfaces . For
example , there is an abstract Window class and implementations
of it for {Unix }, {Microsoft Windows } and the {Macintosh }.
The {java .awt } and {javax .swing } classes can be used either in
web -based {Applets } or in {client -side applications } or
desktop applications }.
There are also packages for developing {XML } applications ,
web services }, {servlets } and other web applications ,
security }, date and time calculations and I /O formatting ,
database ({JDBC }), and many others .
Java is not related to {JavaScript } despite the name .
http ://java .sun .com /)}.
Usenet } newsgroup : {news :comp .lang .java }.
2011 -08 -21 )Java An object -
oriented language originally developed at Sun by James Gosling (
and known by the name “
Oak ”)
with the intention of being the successor to C (
the project was however originally sold to Sun as an embedded language for use in set -
top boxes ).
After the great Internet explosion of 1993 -
1994 ,
Java was hacked into a byte -
interpreted language and became the focus of a relentless hype campaign by Sun ,
which touted it as the new language of choice for distributed applications .
Java is indeed a stronger and cleaner design than C and has been embraced by many in the hacker community —
but it has been a considerable source of frustration to many others ,
for reasons ranging from uneven support on different Web browser platforms ,
performance issues ,
and some notorious deficiencies in some of the standard toolkits (
AWT in particular ).
Microsoft '
s determined attempts to corrupt the language (
which it rightly sees as a threat to its OS monopoly )
have not helped .
As of 2003 ,
these issues are still in the process of being resolved .
Despite many attractive features and a good design ,
it is difficult to find people willing to praise Java who have tried to implement a complex ,
real -
world system with it (
but to be fair it is early days yet ,
and no other language has ever been forced to spend its childhood under the limelight the way Java has ).
On the other hand ,
Java has already been a big win in academic circles ,
where it has taken the place of Pascal as the preferred tool for teaching the basics of good programming to the next generation of hackers .
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