“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。 r%+V8o
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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》。 7yh/BZ1
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以下是用不同语言写成的Hello World程序的几个例子: 55fC~J<
Ada y9Us n8
with Ada.Text_Io; use Ada.Text_Io; sdo[D
procedure Hello is WA&!;Zq
begin RtM8yar+sn
Put_Line ("Hello, world!"); {Sj9%2'M)
end Hello; 1waTTT?"Ho
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s|y "WDyx5
汇编语言 +O?KNZ
#iHs*
/85
x86 CPU,DOS,TASM pWJFz-
MODEL SMALL %Da1(bBh
IDEAL JVSA&c%3
STACK 100H _y}
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W~7A+=&
DATASEG *(T:,PY
HW DB 'Hello, world!$' i=oU;7~zK
rr02pM0
CODESEG 2$ze=
/ l
MOV AX, @data b?lD(fa&
MOV DS, AX R[hzMU}KB
MOV DX, OFFSET HW kZGRxp9
MOV AH, 09H >]vlkA(
INT 21H fO[+LR
'ax
MOV AX, 4C00H Evg_q>
INT 21H 3!|;iJRH
END c2'Lfgx4
LQRQA[^
M:[ %[+6
x86 CPU,GNU/Linux,NASM Ay0U=#XP
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). EWkLXU6t
;Enter this into "hello.asm" then type: SPY|K
;"nasm -f elf hello.asm" CU@Rob} s
;"ld hello.o -o hello" 9CWezI+
;"./hello" _n50C"X=&(
b((M)Gz
section .data ;data section declaration E^/t$M|H
msg db 'Hello World!',0AH tnN.:%mZ
len equ $-msg ;string length |es?;s'
eoG$.M"
section .text ;code section declaration TE7nJ gm
global _start ;entry point (start of execution) SBfT20z[
_start: mov edx,len ;string length ?kH8Lw~{5W
mov ecx,msg ;string start -~v2BN/
mov ebx,1 ;file handle: stdout 1q:2\d]
mov eax,4 ;sys_write ~O
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int 80h ;kernel system call "8x8UgG
2db3I:;E
mov ebx,0 ;return value $!-c-0ub
mov eax,1 ;sys_exit J\:R|KaP<p
int 80h ;kernel system call xSsa(b
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q1"$<# t
x86 CPU,Windows,MASM32 p93r'&Q
.386 qG?Qc (
.model flat,stdcall /'l{E
option casemap:none z"-u95H
;Include 文件定义 "$+Jnc!!
include windows.inc {GK;63`1
include user32.inc [B#R94
includelib user32.lib wsZF;8u t
include kernel32.inc N~goI#4
includelib kernel32.lib }Qn&^[[miL
;数据段 )NXmn95
.data M "p
szCaption db 'A MessageBox!',0 (|:M&Cna]
szText db 'Hello,world!',0 VM
GS[qrG
;代码段 Rg\z<wPBG
.code eTI%^d|
start: cu7hBfj
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK JQ8fdP A
invoke ExitProcess,NULL AS'R?aX|C
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> zZPuha8
end start ]@j*/IP
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AWK /YP{,#p
BEGIN { print "Hello, world!" } +%T\`6
: UGZ+
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BASIC wSzv|\
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传统版BASIC(例如GWBASIC): p
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10 PRINT "Hello, world!" m4hX 'F
20 END p4.wh|n
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或在提示符输入: Cc+t}"^
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?"Hello, world!":END cs,N <|
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现代版BASIC(例如Quick BASIC): _E &A{HkJ
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Print "Hello, world!" GY6`JWk
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以下的语句在Quick BASIC中同样有效: NPhhD&W_
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? "Hello,world!" Y>|B;Kj0(
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{C 6=[
BCPL a]JYDq`,3
GET "LIBHDR" mq aHwID
3c#BKHNC
LET START () BE c(3~0Yr
$( m!|kW{B#A
WRITES ("Hello, world!*N") O,+1<.;+
$) 0LPig[
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Befunge r@72|:,
"!dlrow olleH">v Sz%tJD..
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Brainfuck iQ tNAj
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Vi>,kF.fV
+++++++++++++++.>.+++.------.--------.>+.>. #ZJ _T`l
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C 6bomh2
#include <stdio.h> t9,\Hdo
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int main(void) :Ux?,
{ Y'c>:;JEe
printf("Hello, world!\n"); G 3+.H
return 0; !S^AgZ~
} o>).Cj
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C++ x*![fK
#include <iostream> gwOa$f%O
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int main() vL|SY_:4
{ %j:]^vqFA
std::cout << "Hello, world!" << std::endl; TlXI|3Ip
return 0; kY&k-K\
} t#Z-mv:(
r;/4F/6"
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C++/CLI )jU)_To
int main() O;z,qo X
{ 6 )Hwt_b
System::Console::WriteLine("Hello, world!"); 5A%w 8Qv
} W0y '5`
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C# (C Sharp) z{[xze-f
class HelloWorldApp z8jk[5z
{ ~"!]
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public static void Main() )hd@S9Z.Y
{ ks3`3q 7
System.Console.WriteLine("Hello, world!"); *v;!-F&8>
} XxT#X3D/,"
} AjmVc])
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COBOL ~J5+i9T.)
IDENTIFICATION DIVISION. |M>eEE*F<
PROGRAM-ID. HELLO-WORLD. +!k&Yje
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ENVIRONMENT DIVISION. 8MK>)P o)
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DATA DIVISION. +J_c'ChN
_9faBrzd
PROCEDURE DIVISION. @En^wN
DISPLAY "Hello, world!". CEXyrs<
STOP RUN. aHs^tPg
4oK?-|=?
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Common Lisp s4G|_==
(format t "Hello world!~%") VOKZ dC-
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r^h4z`:L
DOS批处理 `kOD[*
@echo off 2]I4M[|&z
echo "Hello, world!" flk=>h|
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o%
Eiffel nS/)P4z
class HELLO_WORLD wDcj,:h`
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creation [!!o-9b
make Acnl^x7Y1
feature (2$(
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make is GRGzP&}@
local HKF H/eV
io:BASIC_IO =3|O%\
do w<zIAQN
!!io ;ToKJ6hN|*
io.put_string("%N Hello, world!") W;_nK4$%'
end -- make pV.Av
end -- class HELLO_WORLD k:*S&$S!E
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Erlang T^:UBjK6t{
-module(hello). /[O(ea$U
-export([hello_world/0]). '#s05hr
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hello_world() -> io:fwrite("Hello, World!\n"). }~#pEX~j*
6;C3RU]
;epV<{e$q4
Forth aD=a ,
." Hello, world!" CR _Xn qb+
N*%@
:80Z6F.k`
Fortran iOwx0GD.n
WRITE(*,10) T;@;R%
10 FORMAT('Hello, World!') I([!]z
STOP Z^V6K3GSz-
END @.G[s)x
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jZh';M8"
HTML i7ISX>%
<HTML> XpmS{nb
<HEAD> |_o=^?z'
<TITLE> Hello World! </TITLE> SGh1 DB
</HEAD> i-bJS6
<BODY> /TZOJE(2j
<p>Hello World!</p> ZX5 xF<os8
</BODY> r)Ap8?+
</HTML> ^\\Tx*#i
b'J'F;zh>
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HQ9+ Q>/C*@
H Sl-v W
AK\$i$@6
{z(xFrY
INTERCAL t'BLVCu
PLEASE DO ,1 <- #13 _/Gczy4)#
DO ,1 SUB #1 <- #238 vr0WS3
DO ,1 SUB #2 <- #112 ~.A)bp
DO ,1 SUB #3 <- #112 jov:]Bic
DO ,1 SUB #4 <- #0 SV:4GVf
DO ,1 SUB #5 <- #64 F;=4vS]\
DO ,1 SUB #6 <- #238 {.Z}5K
DO ,1 SUB #7 <- #26 nA
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DO ,1 SUB #8 <- #248 SG-'R1
J
DO ,1 SUB #9 <- #168 }
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DO ,1 SUB #10 <- #24 |;.o8}
DO ,1 SUB #11 <- #16 x%+aKZ(m)
DO ,1 SUB #12 <- #158 _@
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DO ,1 SUB #13 <- #52 0G7K8`a
PLEASE READ OUT ,1 :T]o)
PLEASE GIVE UP _^el\
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H|RT?Q
Java WcHgBbNe
public class Hello K$ M^gh0
{ 3pK*~VK
public static void main(String[] args) w"SoeU
{ `}BF${vF
System.out.println("Hello, world!"); *Ho/ZYj3
} -8r
} \e!vj.PU
3 n'V\Hvz
+n<k)E@>J
JSP 0Z0:,!
<% Pcu#lWC$
out.print("Hello, world!"); uL3Eq>~x
%> TF 'U
TjHwjRa
fv`O4
MIXAL 3}@_hS"^8
TERM EQU 19 the MIX console device number 5B&;uY
ORIG 1000 start address (9<guv
START OUT MSG(TERM) output data at address MSG ~er\~kp
HLT halt execution rS4@1`/R
MSG ALF "MIXAL" E2cB U{x
ALF " HELL" hGbj0
ALF "O WOR" :WSDf VX
ALF "LD " L0&RvI#
END START end of the program *+uHQgn(
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Nuva } ~"hC3w
<..直接输出..> ?p(/_@
Hello, world! $ &P>r
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<..或者..> q^A+<d
H|ER
<. =e gW
// 不带换行 mcn 2Wt
? "Hello, world!" Mz1G5xcl
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// 或者 nK$X[KrV'
w.lAQ5)I%\
// 带换行 :.?gHF.?
?? 'Hello, world!' 4<cz--g
.> "Ae@lINn[y
#7ov#_2Jd
rHf&:~
OCaml .[Ap=UYI>
let main () = m8SA6Y\
print_endline "Hello world!";; ' j6gG
hUD7_arKF
f{"8g"[[)(
Pascal ]D@0|
program Hello; f)g7
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begin <L{(Mj%Z
writeln('Hello, world!'); =)E,8L
end. m$9w"8R
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Perl gqR)IVk>%
#!/usr/local/bin/perl q~@]W=
print "Hello, world!\n"; I+!:K|^
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PHP :>aQ~1f>]
<?php 6Z`R#d #I
print("Hello, world!"); }BiiE%a
?> -tnQCwq#
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xl"HotsX-x
Pike <BSc* 9Q
#!/usr/local/bin/pike >(y<0
int main() gORJWQv
{ >Bs#Xb_B]
write("Hello, world!\n"); S}f?.7
return 0; (mtoA#X1:h
} wZ4tCZA
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J*l4|^i<
PL/I _BFOc>0
Test: procedure options(main); Y-'78BJk
declare My_String char(20) varying initialize('Hello, world!'); EwS!]h?
put skip list(My_String); q %0Cg=
end Test; /XudV2P-CA
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Z4){
7|~a
Prolog .>wv\i[p
goal 6l$L~>
write("hello,world!"). ZhNdB
Cda!Mk:
kQaSbpNmH
Python 8?*RIA.a
#!/usr/local/bin/python q~L^au8
print "Hello, world!" 341?0%=
c}[+h5
^FZ^6*
REXX P ]i
=r] i
say "Hello, world!" l{VSb92f
l%Gw_0.?e
kAM1TWbaVQ
Ruby /%4_-C pm
#!/usr/bin/ruby SEl#FWR
print "Hello, world!\n" h;V,n
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H,
\<vNVz7.D
Scheme 'cNKjL;
(display "Hello, world!") yAL1O94
(newline) T@%m7 |P
^). )
M=xQ=j?
sed (需要至少一行输入) CzV(cSS9-
sed -ne '1s/.*/Hello, world!/p' L:M0pk{T
7([h4bg{
k>E`s<3
Smalltalk \n9A^v`F/
Transcript show: 'Hello, world!' x'Pi5NRE
^MD;"A<
Aa?I8sbc
SNOBOL XYx6V
OUTPUT = "Hello, world!" M}DH5H"s
END D\^WXY5e%y
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(#q<\`
SQL /w]&t\]*
create table MESSAGE (TEXT char(15)); }a&mY^
insert into MESSAGE (TEXT) values ('Hello, world!'); FVF-:C
select TEXT from MESSAGE; rZ_>`}O2
drop table MESSAGE; -~)OF
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ql5x2n
Tcl %HtuR2#ca
#!/usr/local/bin/tcl $R8w+ Id
puts "Hello, world!" Y{ f7
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o@lWBfB*%e
ID1?PM
TScript }8'&r(cN4
? "Hello, world!" C9Bh@v%90^
|!d"*.Q@F
SQE[m9v
Turing oJ*1>7[ J
put "Hello, world!" km:nE: |
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FM^9}*
UNIX-style shell =OTm2:j#yQ
程序中的/bin/sh可改为您使用的shell (L6Cy%KgV
3Rl,GWK
#!/bin/sh qH%")7>
echo 'Hello, world!' ,:v&4x&=
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Q^eJ4{Ya:
GUI sCH)gr@gJ^
KSs 1CF'i
Delphi s[3fqdLP&
program HelloWorld; O>DNC-m)i{
uses %4>x!{jwV
Dialogs; ){Mu~P
begin 00vBpsZj2;
ShowMessage('Hello, World!'); "Q+83adY4x
end. +6W(z3($
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N=,j}FY
Nuva {_ V0
<. z
YDK $
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) x%BF{Sw
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HD # r0)
Visual Basic wODvc9p}]
MsgBox "Hello, world!" EZr6oO@Nc
'或者 J=WB6zi
Print "Hello, world!" 3(lVmfk
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Visual FoxPro `ti8-
? "Hello, world!" oNRG25
VQ
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X11 E8[XG2ye
用一个程序 rFd@mO
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xmessage 'Hello, world!' e6P[c=m
#
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用C++和gtkmm 2 hLuJWjCV
f$D@*33ft
#include <iostream> QUP|FIpZ
#include <gtkmm/main.h> <f%/px%1
#include <gtkmm/button.h> !$kR ;Q"/
#include <gtkmm/window.h> r,'O).7
using namespace std; oX|?:MS:
nxRwWj57
class HelloWorld : public Gtk::Window z}APR@?`n8
{ CIQwl 6H9
public: 5+L8\V9;
HelloWorld(); ,YlQK;
virtual ~HelloWorld(); ba&o;BLUy
protected: ;QPy:x3
Gtk::Button m_button; .Ty,_3+{#p
virtual void on_button_clicked(); &va*IR
}; l{EU_|q
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HelloWorld::HelloWorld() : m_button("Hello, world!") 1ih* gJPpj
{ QMb^&?;s
set_border_width(10); oyQ0V94j
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); #:
hVF/
add(m_button); Yw^ Gti'<
m_button.show(); [$:@X V(
} zPBfiK_hV
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HelloWorld::~HelloWorld() {} ADBpX>
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void HelloWorld::on_button_clicked() )*HjRTF6G
{ EIK*49b2
cout << "Hello, world!" << endl; jZ#UUnR%
} 1*c>I@I;
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int main (int argc, char *argv[]) 'a_s%{BJXg
{ -$L(y@%X^
Gtk::Main kit(argc, argv); r#I>_Utsy
HelloWorld helloworld; |D(&w+(
Gtk::Main::run(helloworld); <?4cWp|i
} ?%;B`2 nDR
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o'^phlX
Java D"`[6EN[
import java.awt.*; qOgtGN}k
import java.awt.event.*; FK3Whe{KP{
V^vLN[8_\
public class HelloFrame extends Frame ex0oAt^
{ qAORWc
HelloFrame(String title) MC6)=0:KX
{ oB}K[3uB:t
super(title); j88=f#<
} ~zj"OG"zOw
public void paint(Graphics g) A`Q
>h{
{ &58 {
super.paint(g); .xo_}Vw
java.awt.Insets ins = this.getInsets(); 7y>(H<^>
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); H.9yT\f.
} ~K%k
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public static void main(String args []) 'DeW<Sa~
{ Ri[S<GOMii
HelloFrame fr = new HelloFrame("Hello"); -B,c B
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fr.addWindowListener( *f?S5.
new WindowAdapter() OMi02tSm
{ !^]q0x
public void windowClosing(WindowEvent e) !6{Jq]
{ avVmY|I
System.exit( 0 ); 7\f{'KL
} Z$1.^H.Db
} b24di
); U-1VnX9m
fr.setResizable(true); 7x%S](m%
fr.setSize(500, 100); prqT (1
fr.setVisible(true); Q|Nzbmwh
} qT"drgpi3
} &+,:u*%
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Java Applet 87+.pM|t%
Java Applet用于HTML文件。 k"5`: qL
-*r [
HTML代码: Kq8(d`g}
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<HTML> 4v0dd p
<HEAD> mn(/E/
<TITLE>Hello World</TITLE> 0
-!?W
</HEAD> 4+-5,t7
<BODY> GA(OK-WUd
8?A@/
HelloWorld Program says: >).@Nb;e
/L)?> tg
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> H U:1f)aa
</APPLET> sWp{Y.
hcd!A5
</BODY> "L ^TT2
</HTML> /]pX8
d
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Java代码: u):X>??
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import java.applet.*; .L~f Fns/
import java.awt.*; 37J\i ]
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public class HelloWorld extends Applet "1_{c *ck
{ &uv>'S#%
public void paint(Graphics g) zC<'fT/rG
{ .@4Q kG/
g.drawString("Hello, world!", 100, 50); &*X3ch
} ;%v%K+}r
} nrxjN(9V%+
dVasm<lZ
zG&WWc`K
java script %{N>c:2I$
java script是一种用于HTML文件的脚本语言。要查看以下程序的运行结果,只要将其复制到任何HTML文本即可。 516VQ<