“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。它还可以用来确定该语言的编译器、程序开发环境以及运行环境已经正确安装。 p Y)5bSA
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 _i_Q?w`
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以下是用不同语言写成的Hello World程序的几个例子: zr v]
Ada x} /,yaWZ
with Ada.Text_Io; use Ada.Text_Io; ql{(Lf$
procedure Hello is Jo(`zuLJ
begin 0X8t>#uF
Put_Line ("Hello, world!"); Eh</? Qv\
end Hello; s>_V
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汇编语言 Kyt)2p
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x86 CPU,DOS,TASM Tl]e%A`|
MODEL SMALL $yDWu"R8
IDEAL vgt]:$
STACK 100H m ~#!
:,;K>l^U
DATASEG l:;PXy6)
HW DB 'Hello, world!$' FLal}80.o:
~fl@ 2
CODESEG sKz`aqI
MOV AX, @data >%p{38
MOV DS, AX ]=rht9),"
MOV DX, OFFSET HW hDP/JN8y
MOV AH, 09H bUV >^d
INT 21H ,)+o
MOV AX, 4C00H Jk|Q`h
INT 21H A61^[Y,dX_
END NqHy%'R
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vE6mOM!_L
x86 CPU,GNU/Linux,NASM ~0$NJrUy
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). JTqDr
;Enter this into "hello.asm" then type: CZnK8&VDY
;"nasm -f elf hello.asm" j hYToMq
;"ld hello.o -o hello" _LP/!D
;"./hello" +h^jC9,m~{
mE O\r|A
section .data ;data section declaration 8,D 2^Gg
msg db 'Hello World!',0AH (@X~VACT
len equ $-msg ;string length ~"pKe~h
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section .text ;code section declaration Dih6mTP{
global _start ;entry point (start of execution) r?m+.fJB
_start: mov edx,len ;string length ^L1L=c;,
mov ecx,msg ;string start D.D$#O_n.S
mov ebx,1 ;file handle: stdout WH ?}~u9
mov eax,4 ;sys_write 'ckQg=zPR
int 80h ;kernel system call ,y4I[[
ZN"j%E{d
mov ebx,0 ;return value LZPuDf~/
mov eax,1 ;sys_exit f-6vLX\Vu
int 80h ;kernel system call waX>0e
AL/?,%F
.iCDXc{#
x86 CPU,Windows,MASM32 GWsE;
.386 K]/4qH$:
.model flat,stdcall )m6M9eC
option casemap:none @uo ~nF j,
;Include 文件定义 Yw5' 6NU
include windows.inc -yxOBq
include user32.inc i|
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includelib user32.lib o:Qv
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include kernel32.inc kK8itO
includelib kernel32.lib d\e7,"L*Q
;数据段 A[G0 .>Wk
.data d@w~[b
szCaption db 'A MessageBox!',0 yJuQ8+vgR}
szText db 'Hello,world!',0 z"D.Bm~ ]
;代码段 tH=P6vY
.code ,Vd\m"K{
start: u4z&!MT}
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK fA'qd.{f^
invoke ExitProcess,NULL ly% F."v
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ob+euCuJ
end start f>'Y(dJ'W
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AWK 0CSv10Tg
BEGIN { print "Hello, world!" } Iff9'TE
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BASIC Li*eGlId
传统版BASIC(例如GWBASIC): R1&unm0
f= >OJ!:
10 PRINT "Hello, world!" (SSRY 9
20 END N@B9
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或在提示符输入: }QZQ3@
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?"Hello, world!":END zf3v5Hk
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现代版BASIC(例如Quick BASIC): 9nu3+.&P
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Print "Hello, world!" u3Gjg{-N7
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以下的语句在Quick BASIC中同样有效: nRd)++
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? "Hello,world!" 0$r^C6}f
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BCPL aq7~QX_0G
GET "LIBHDR" "3FihE]k
`1 :{0p2q
LET START () BE *<1r3!
$( @aJ!PV'ms
WRITES ("Hello, world!*N") EpQ8a[<-3
$) `3p~m,
c8Z wr]DF
vb9OonE2
Befunge 1+?^0%AC
"!dlrow olleH">v hsu{ey p
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Brainfuck j,]Y$B
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< RK w$- 7O
+++++++++++++++.>.+++.------.--------.>+.>. 8Lw B
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C ~
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#include <stdio.h> Fl(T\-Eu
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int main(void) hy|b6wF&
{ A!^q
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printf("Hello, world!\n"); !!Z?[rj
return 0; z3?o|A }/W
} @k&qb!Qah
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C++ j65<8svl
#include <iostream> I%urz!CNE*
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int main()
}-~l!
{ s&'QN=A
std::cout << "Hello, world!" << std::endl; \W1/p`
return 0; m,fAeln
} -*.-9B~u
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C++/CLI G@j0rnn>B
int main() hlt[\LP=$
{ n_'{^6*O
System::Console::WriteLine("Hello, world!"); S6fb f>[
} cu+FM
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C# (C Sharp) Mw9 \EhA
class HelloWorldApp V')0 Mr
{ #:SNHM^><
public static void Main() 4`,j =3
{ Dc)dE2
System.Console.WriteLine("Hello, world!"); s.8{5jVG
} :6%Z]tt
} X.:]=,aGW
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COBOL _YRE (YZ/
IDENTIFICATION DIVISION. sJNFFOz
PROGRAM-ID. HELLO-WORLD. $ MC)}l
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ENVIRONMENT DIVISION. 8_N]e'WUh
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DATA DIVISION. $8BPlqBIZ
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PROCEDURE DIVISION. av~5l4YL
DISPLAY "Hello, world!". .ji_nZ4.+
STOP RUN. Ha)ANAD
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Common Lisp kwsp9 0)
(format t "Hello world!~%") 4bgqg0z>
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DOS批处理 ={u0_j
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@echo off u(G*\<z-
echo "Hello, world!" V*~Zs'L'E
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Eiffel i&n'N8D@
class HELLO_WORLD /t(C>$ }p
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creation dUsxvho
make --DoB=5%8
feature 2PG [7u^
make is "Iix
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local g&{9VK6.
io:BASIC_IO =z8f]/k*>
do i7ly[6{^pr
!!io VH:]@x//{
io.put_string("%N Hello, world!") Od|$Y+@6
end -- make GAAm0;
end -- class HELLO_WORLD {^N[("`
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Erlang LCQE_}Mh
-module(hello). '}9JCJ
-export([hello_world/0]). Lco&Fp
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hello_world() -> io:fwrite("Hello, World!\n"). :Lz\yARpk
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Forth AQ='|%
." Hello, world!" CR 0P]E6hWgg
wm^J;<T[
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Fortran BGfzslK
WRITE(*,10) L{c q, jk
10 FORMAT('Hello, World!') ZIF49`Y4TF
STOP 12+>5BA
END FKmFo^^0
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HTML QMZ)-ty"
<HTML> v~Y^r2
<HEAD> +[tP_%/r'^
<TITLE> Hello World! </TITLE> }m-FGk
</HEAD> ^7Fh{q4IE
<BODY> ~^cMys |'
<p>Hello World!</p> -!
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</BODY> /S lYm-uQ+
</HTML> 1PatH[T[
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H +k>.Q0n%m
b4pm_Um
=ha{Ziryo
INTERCAL *2X0^H|dS
PLEASE DO ,1 <- #13 3=L.uXVb
DO ,1 SUB #1 <- #238 yR\btx|e5~
DO ,1 SUB #2 <- #112 -uy`!A
DO ,1 SUB #3 <- #112 pf7it5
DO ,1 SUB #4 <- #0 [#sz WNfU
DO ,1 SUB #5 <- #64 Nj 00W1
DO ,1 SUB #6 <- #238 jt.3P
DO ,1 SUB #7 <- #26 >orK';r<
DO ,1 SUB #8 <- #248 ]i)j3WDz]
DO ,1 SUB #9 <- #168 ?pzaG{
DO ,1 SUB #10 <- #24 5;{H&O9Q
DO ,1 SUB #11 <- #16 mtjh`
DO ,1 SUB #12 <- #158 FeTL&$O
DO ,1 SUB #13 <- #52 f1(+
bE%
PLEASE READ OUT ,1 D~\$~&_]=
PLEASE GIVE UP }3L@J8:D"
A\.GV1
^) s2$A:L
Java L{`JRu
public class Hello %p0xM
{ {qa Aq%'
public static void main(String[] args) h?azFA~
{ C;vtY[}<
System.out.println("Hello, world!"); xoR;=ph
} bv*,#Qm
} :dqn h
=i7`ek
Y(cGk#0
JSP W}]%X4<#rN
<% 2m2;t0
out.print("Hello, world!"); =7o"u3hG
%> P->y_4O
]: ~OG@(
o+$7'+y1n-
MIXAL ,kn">k9
TERM EQU 19 the MIX console device number 'u1?tQ=gmk
ORIG 1000 start address 6efnxxY}sa
START OUT MSG(TERM) output data at address MSG (#E.`e1#6
HLT halt execution >#y^;/bb
MSG ALF "MIXAL" }7.PH'.8
ALF " HELL" ;y2/-tL?
ALF "O WOR" {7/0< NG
ALF "LD " Zc`BiLzrIG
END START end of the program GHeVp/u
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Nuva k'5?M
<..直接输出..> [n$BRk|
Hello, world! UQI]>#_/v
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<..或者..> byfJy^8G
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<. r|qp3x
// 不带换行 JQ@E>o7_
? "Hello, world!" [Yc G(^^
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// 或者 d$Pab*
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// 带换行 9amaL~m
?? 'Hello, world!' C-H@8p?T
.> 5)MS~ii
}dd8N5b
dp*u9z~NA
OCaml F;<xnC{[
let main () = H?X|(r|+
print_endline "Hello world!";; <>aw
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OUNd@o
Pascal ^ cz(}N
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program Hello; t>$kWd{9e;
begin O|M{-)
writeln('Hello, world!'); Bjz Pz
end. 6Z%U`,S
sU{NHC)5
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Perl x"
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#!/usr/local/bin/perl H,u<|UMM_
print "Hello, world!\n"; eF3,2DDC
nPy$D-L,
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PHP vG"=h%
<?php @0u~?!g@
print("Hello, world!"); DS[#|
?> z\%Ls
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fV'ZsJ N
Pike F ;2w1S^
#!/usr/local/bin/pike \hEN4V[
int main() Y*vW!yu
{ #a8B/-
write("Hello, world!\n");
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return 0; (j3xAA
} YS *9t
Q{
-3=#u_
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PL/I W|g4z7Pb
Test: procedure options(main); 7M<'/s
declare My_String char(20) varying initialize('Hello, world!'); F6{bjv2A
put skip list(My_String); /Id%_,}Kb
end Test; [.uG5%fa
*=I}Qh(1
#/<&*Pu5t
Prolog z-.+x3&o @
goal 6U R2IxbE
write("hello,world!"). [c|]f_ZdK
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~hn
Pf\D-1gi
Python m4l&
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#!/usr/local/bin/python WL?\5?G9l
print "Hello, world!" rcC<Zat,|
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x?2@9u8Yb
REXX R&BTA
say "Hello, world!" L'0B$6
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Ruby :i .{
#!/usr/bin/ruby Wg<(ms dj
print "Hello, world!\n" h _+dT
vRHd&0
xk5@d6Y{r
Scheme HV{wI1
(display "Hello, world!") m0;CH/D0
(newline) P;ci9vk
uJC~LC N
c_'OPJ
sed (需要至少一行输入) \Ani}qQ%|
sed -ne '1s/.*/Hello, world!/p' |m^k_d!d
sE Q=dcK
yEhTNBa*h{
Smalltalk :<bB?N(
Transcript show: 'Hello, world!' #0P$M!%
:?g:~+hfO
v{ 0=
SNOBOL x"gd8j]s
OUTPUT = "Hello, world!" ]);%wy{Ho
END #AL=f'2=f
PE3vQH=t~
mR?5G:W~R
SQL ~nh:s|l6%M
create table MESSAGE (TEXT char(15)); pxCK;]
insert into MESSAGE (TEXT) values ('Hello, world!'); S/e2P|}
select TEXT from MESSAGE; C(#u[8
drop table MESSAGE; NnDxq%l%
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$ us]35Z3
Tcl g" .are'7
#!/usr/local/bin/tcl 1+jAz`nA:T
puts "Hello, world!" qQ?"@>PALD
-y8`yHb_
=E.t`x=
TScript ]%wVHC
? "Hello, world!" 4,CXJ2
}dWq=)*
o7sT=x9
Turing ->y J5smtY
put "Hello, world!" }NzpiY9
,^w?6?,&l}
iw8yb;|z;A
UNIX-style shell zxbpEJzpn
程序中的/bin/sh可改为您使用的shell MHX?@.
v
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#!/bin/sh ->g*</
echo 'Hello, world!' '%dfzK*Z
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V C24sU
GUI V-Sd[
h?BFvbAt
Delphi T"E6y"D
program HelloWorld; i+S)
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uses YW_Q\|p]M
Dialogs; Jrti
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begin aTqd@},?
ShowMessage('Hello, World!'); V )x$|!(
end. D6>2s\:>vp
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`.FF!P:{C*
Nuva ]
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<. Nn~~!q
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) jr /pj?
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C)@y5. G;
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Visual Basic si`A:14R
MsgBox "Hello, world!" 52 fA/sx
'或者 aI6$? wus
Print "Hello, world!" h]5C|M|
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Visual FoxPro )z73-M V"
? "Hello, world!" q Gw -tPD<
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X11 Q<^Tl(`/N?
用一个程序 nrxo&9[@n
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xmessage 'Hello, world!' vY }A
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用C++和gtkmm 2 G-xDN59K
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#include <iostream> C&*oI =6
#include <gtkmm/main.h> VY;{/.Sa
#include <gtkmm/button.h> OjJXysslXO
#include <gtkmm/window.h> h|VeG3H
using namespace std; \ 3wfwu.q
7\$qFF-y
class HelloWorld : public Gtk::Window ]iN'x?Fo
{ _aFl_\3>
public: rz wF~-m +
HelloWorld(); Oiz ,w7LRh
virtual ~HelloWorld(); Ljxz.2LGr
protected: tyXuG<
Gtk::Button m_button; 4C<jdv_J
virtual void on_button_clicked(); 8/i!' 0r\
}; 4zev^FR
T>}5:,N~
HelloWorld::HelloWorld() : m_button("Hello, world!") M dZ&A}S
{ 3D!5T8 @
set_border_width(10); AsAT_yv#
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 4wa`<H&S5
add(m_button); QDs^Ije
m_button.show(); Z:,U]Z(
} 5p<ItU$pnL
/^X/ 8
HelloWorld::~HelloWorld() {} y#Fv+`YDl
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void HelloWorld::on_button_clicked() f&eK|7J_Yf
{ WG6FQAo^8
cout << "Hello, world!" << endl; W-x?:X<}
} \
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1crnmJ!C
int main (int argc, char *argv[]) 8oUpQcim
{ .y_/U wu
Gtk::Main kit(argc, argv); R:e<W/P"
HelloWorld helloworld; hd>aZ"nm1
Gtk::Main::run(helloworld); _/uFsYC
} K/tRe/t}
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Java Z*y`R
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import java.awt.*; !V"<U2
import java.awt.event.*; !>{G,\^=pT
TH; R
public class HelloFrame extends Frame & -{DfNK c
{ ]h>_\9qO
HelloFrame(String title) 9o;^[Ql-
{ _,xc[ 07
super(title); g!$!F>[
} YP.5fq:
public void paint(Graphics g) r"``QmM
{ %X4xv_o`f
super.paint(g); WF1px %
java.awt.Insets ins = this.getInsets(); 9K5pwC\$%
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); ),U X4%K=
} Gb8D[1=u=
public static void main(String args []) ,4zmb`dP<
{ c_-drS
HelloFrame fr = new HelloFrame("Hello"); 8TGOx%}i
DF1I[b=]
fr.addWindowListener( SH_(rQby
new WindowAdapter() zm]aU`j
{ ]w;rfn9D
public void windowClosing(WindowEvent e) -~v|Rt
{ uJFdbBDSh
System.exit( 0 ); fBRo_CU8!
} 4]h
=yc R
} $
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); "}q@Y=
fr.setResizable(true); OK{quM5
fr.setSize(500, 100); tSVc|j
fr.setVisible(true); qQA}Z*(m
} q*F{/N**
} dRj| g
LV\DBDM
G B>QK
Java Applet rs,2rSsg!
Java Applet用于HTML文件。 rM .|1(u
u=/{cOJI6
HTML代码: Y%PwktQm
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<HTML> N['qgO/
<HEAD> &>%T^Y|J4
<TITLE>Hello World</TITLE> SnE(o)Q
</HEAD> aa>xIW,u
<BODY> >#hO).`C
FN\E*@>X=
HelloWorld Program says: 4 !y%O
3pv4B:0
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> jp0<pw_
</APPLET> r30 <