{"id":2713,"date":"2009-03-03T02:28:40","date_gmt":"2009-03-03T02:28:40","guid":{"rendered":"http:\/\/www.happyfam.or.kr\/ysoh\/%eb%b3%80%ec%88%98-%ec%83%81%ec%88%98-%ec%9e%90%eb%a3%8c%ed%98%95\/"},"modified":"2015-02-10T21:12:18","modified_gmt":"2015-02-10T12:12:18","slug":"%eb%b3%80%ec%88%98-%ec%83%81%ec%88%98-%ec%9e%90%eb%a3%8c%ed%98%95","status":"publish","type":"post","link":"https:\/\/www.happyfam.or.kr\/ysoh\/%eb%b3%80%ec%88%98-%ec%83%81%ec%88%98-%ec%9e%90%eb%a3%8c%ed%98%95\/","title":{"rendered":"\ubcc0\uc218, \uc0c1\uc218, \uc790\ub8cc\ud615"},"content":{"rendered":"

\uc790\ub8cc\ud615 (Data Type)

\uc790\ub8cc\ud615\uc774\ub780 \ubcc0\uc218\ub098 \uc0c1\uc218\uac00 \uc800\uc7a5\ud560 \uc218 \uc788\ub294 \uc790\ub8cc\uc758 \ud615\uc2dd\uc744 \uc758\ubbf8\ud55c\ub2e4. \ub2f9\uc5f0\ud55c \uc598\uae30\uc9c0\ub9cc JSP \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c\uc758 \uc790\ub8cc\ud615\uc740 Java\uc758 \uadf8\uac83\uacfc \uc644\uc804\ud788 \ub3d9\uc77c\ud558\ub2e4. \uc790\ub8cc\ud615\uc740 \ud06c\uac8c \uc22b\uc790\ud615, \ubb38\uc790\ud615 \uadf8\ub9ac\uace0 \ubd88\ud615\uc73c\ub85c \uad6c\ubd84\ud560 \uc218 \uc788\ub2e4.

\uc22b\uc790\ud615 (Numeric Type)

\uc22b\uc790\ud615\uc740 \ud06c\uac8c \uc815\uc218\ub97c \uc704\ud55c \uc790\ub8cc\ud615\uacfc \uc2e4\uc218\ub97c \uc704\ud55c \uc790\ub8cc\ud615\uc73c\ub85c \uad6c\ubd84\ub418\uba70 \uc22b\uc790\ub97c \ud45c\ud604\ud560 \uc218 \uc788\ub294 \ud06c\uae30\uc5d0 \ub530\ub77c \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ubd84\ub429\ub2c8\ub2e4.

\uc815\uc218\ud615 (Integer Type)

byte (8 bit) -128 ~ 127
short (16 bit) -32,768 ~ 32,767
int (32 bit) -2,147,483,648 ~ 2,147,483,647
long (64 bit) -9,223,372,036,854,775,808 ~ 9,223,372,036,854,775,807

\uc2e4\uc218\ud615 (Floating-point Type)

float (32 bit)
double (64 bit)

\uc704 \uc815\uc218\ud615\uc5d0\uc11c \uc54c \uc218 \uc788\ub4ef \uc22b\uc790 \uc790\ub8cc\ud615\uc758 \ud06c\uae30\uac00 \ucee4\uc9c8 \uc218\ub85d \ud45c\ud604\uac00\ub2a5\ud55c \uc22b\uc790\uc758 \ubc94\uc704\ub3c4 \ucee4\uc9d1\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc2e4\uc218\ud615\uc5d0\uc11c\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\ub85c \ud45c\ud604 \uac00\ub2a5\ud55c \uc2e4\uc218\uc758 \ubc94\uc704\uac00 float \ubcf4\ub2e4 double \uc774 \ub354 \ud06c\uace0 \uc815\ubc00\ud55c \uc218\uc758 \ud45c\ud604\uc774 \uac00\ub2a5 \ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c \uc815\ubc00\ud558\ub2e4\ub294 \uc758\ubbf8\ub294 \uc18c\uc218\uc810 \uc544\ub798\ub85c \ub354 \ub9ce\uc740 \uc22b\uc790\ub97c \ud45c\ud604\ud560 \uc218 \uc788\ub2e4\ub294 \uc758\ubbf8\ub97c \ub73b\ud569\ub2c8\ub2e4.

\ubb38\uc790\ud615 (Character Type)

\ubb38\uc790\ud615\uc740 UTF-16 \ubb38\uc790\ub97c \uc800\uc7a5\ud558\uae30 \uc704\ud55c \uc790\ub8cc\ud615\uc73c\ub85c \uc591\uc758 \uc815\uc218\ub97c \uc758\ubbf8\ud558\uae30\ub3c4 \ud55c\ub2e4. Sun\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 Java \ubb38\uc11c\uc5d0\uc11c\ub294 \uc774 \uc790\ub8cc\ud615\uc744 \uc815\uc218\ud615(Integer Type)\uc5d0 \ud3ec\ud568\uc2dc\ud0a4\uace0 \uc788\ub2e4.

char (16 bit) ‘\\u0000’ ~ ‘\\uffff’ \ub610\ub294 0 to 65535

\ubd88\ub9b0\ud615 (Boolean Type)

\ubd88\ub9b0\ud615\uc740 \ub17c\ub9ac\uac12, \uc989 \ucc38(true)\uacfc \uac70\uc9d3(false)\uc744 \uc800\uc7a5\ud558\uae30 \uc704\ud55c \uc790\ub8cc\ud615\uc774\ub2e4.


\uc0c1\uc218 (Constant)

\uc0c1\uc218\ub780 \ud504\ub85c\uadf8\ub7a8 \uc5b8\uc5b4\uc5d0\uc11c \ud45c\ud604\ub418\uace0 \ucc98\ub9ac\ub418\uc5b4\uc9c0\ub294 \uac12\uc744 \uc758\ubbf8\ud558\uba70 \uc790\ub8cc\ud615\uacfc \ubc00\uc811\ud55c \uad00\uacc4\ub97c \uac00\uc9c4\ub2e4. \uac01 \uc790\ub8cc\ud615\uacfc \uad00\uacc4\ub41c \uc0c1\uc218\uc758 \ud45c\ud604\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.

\uc815\uc218\ud615 \uc0c1\uc218

\uc815\uc218\ud615 \uc0c1\uc218 \uc911 byte, short, int \ud615 \uc0c1\uc218\ub294 123, 1, -2134, -1234124\uacfc \uac19\uc774 \ud45c\ud604\ud55c\ub2e4. \uadf8\ub7ec\ub098 long \ud615 \uc0c1\uc218\ub294 1L, -922L, 83423L\uacfc \uac19\uc774 byte, short, int \ud615 \uc0c1\uc218\uc5d0 ‘L’\uc744 \ubd99\uc5ec \ud45c\ud604\ud55c\ub2e4.

\uc2e4\uc218\ud615 \uc0c1\uc218

\uc2e4\uc218\ud615 \uc0c1\uc218\ub294 \uc18c\uc218\uc810\uc744 \uac00\uc9c4 \uc218\uc790\ub85c doble \ud615 \uc0c1\uc218\ub294 3.14, 0.0, 100.0 \ub4f1\uacfc \uac19\uc774 \ud45c\ud604\ud558\uace0 float\ud615 \uc0c1\uc218\ub294 3.14F, 0.0F, 100.0F \ub4f1\uacfc \uac19\uc774 double \ud615 \uc0c1\uc218\uc5d0 ‘F’\ub97c \ubd99\uc5ec \ud45c\ud604\ud55c\ub2e4.

\ubb38\uc790\ud615 \uc0c1\uc218

\ubb38\uc790\ud615 \uc0c1\uc218\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc791\uc740 \uc778\uc6a9\ubd80\ud638 “‘” \uc548\uc5d0\uc11c \ud45c\ud604\ub41c\ub2e4. \uc608\ub97c \ub4e4\uba74 ‘A’, ‘\\u0041’\uc640 \uac19\uc774 \ud45c\ud604\ub41c\ub2e4. \ub610\ud55c \ubb38\uc790\ud615 \uc0c1\uc218\ub294 \uc591\uc758 \uc815\uc218\ub97c \uc758\ubbf8\ud55c\ub2e4\uace0\ub3c4 \ud558\uc600\uae30 \ub54c\ubb38\uc5d0 65\uc640 \uac19\uc774 \ud45c\ud604\ud560 \uc218\ub3c4 \uc788\ub2e4. \uadf8\ub7ec\ub098 \ud070 \uc778\uc6a9\ubd80\ud638 “”” \uc548\uc5d0 \ud45c\ud604\ub41c “A”, “ABC” \ub4f1\uacfc \uac19\uc740 \ubb38\uc790\ub4e4\uc740 \ubb38\uc790\ud615 \uc0c1\uc218\uac00 \uc544\ub2c8\ub77c String \ud074\ub798\uc640 \uad00\ub828\ub418\uc5b4\uc9c4 \ubb38\uc790\uc5f4\uc774\ubbc0\ub85c \uc8fc\uc758\ud574\uc57c\ud55c\ub2e4. String \ud074\ub798\uc2a4\uc5d0 \ub300\ud574\uc11c\ub294 \ud6c4\uc5d0 \uc8fc\uccb4\uc801\uc73c\ub85c \ub2e4\ub8e8\uaca0\ub2e4.


\ubcc0\uc218 (Variable)

\ubcc0\uc218\ub780 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c \uc790\ub8cc\ub97c \uc800\uc7a5\ud558\uace0 \uc811\uadfc\ud558\uae30 \uc704\ud574 \uc774\ub984\uc774 \ubd99\uc5ec\uc9c4 \uc2dd\ubcc4\uc790\ub85c \ub0b4\ubd80\uc801\uc73c\ub85c\ub294 \uae30\uc5b5\uacf5\uac04 \uc989 \uba54\ubaa8\ub9ac\ub97c \uc758\ubbf8\ud55c\ub2e4. JSP\uc5d0\uc11c\uc758 \ubcc0\uc218 \uc5ed\uc2dc Java\uc758 \ud615\uc2dd\uacfc \uac19\uc73c\uba70, \uc0ac\uc6a9\uc804\uc5d0 \ubc18\ub4dc\uc2dc \uc790\ub8cc\ud615\uacfc \ud568\uaed8 \uc120\uc5b8\ub418\uc57c \ud55c\ub2e4.
\ubcc0\uc218\uc758 \uc774\ub984\uc5d0 \ud574\ub2f9\ub418\ub294 \uc2dd\ubcc4\uc790\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uaddc\uce59\uc744 \uac00\uc9c4\ub2e4.

1. \uc2dd\ubcc4\uc790\ub294 \uc601\uc5b4, \uc22b\uc790, \ub610\ub294 “_”\ub85c \uad6c\uc131\ub41c\ub2e4.
2. \uc2dd\ubcc4\uc790\uc758 \uc2dc\uc791\uc740 \ubc18\ub4dc\uc2dc \uc601\ubb38\uc790 \ub610\ub294 “_”\ub85c \uc2dc\uc791\ub418\uc5b4\uc57c \ud558\uba70 \uc22b\uc790\ub85c \uc2dc\uc791\ub418\uc5b4\uc11c\ub294 \uc548\ub41c\ub2e4.
3. \uc608\uc57d\uc5b4\uc640 \uac19\uc740 \ud0a4\uc6cc\ub4dc\ub294 \uc2dd\ubcc4\uc790\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.

\ub2e4\uc74c\uc740 \uc62c\ubc14\ub978 \uc2dd\ubcc4\uc790\uc640 \uc798\ubabb\ub41c \uc2dd\ubcc4\uc790\ub97c \ubcf4\uc5ec\uc8fc\uace0 \uc788\ub2e4.

\ubcc0\uc218\uba85\uc73c\ub85c \uc0ac\uc6a9\uc774 \uac00\ub2a5\ud55c \uc2dd\ubcc4\uc790
A, A0, student, Std_no, _def

\ubcc0\uc218\uba85\uc73c\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub294 \uc798\ubabb\ub41c \uc2dd\ubcc4\uc790

5a : \uc22b\uc790\ub85c \uc2dc\uc791
if : \uc608\uc57d\uc5b4
a#no : \ud2b9\uc218\ubb38\uc790(#) \ud3ec\ud568

\ubcc0\uc218\uc758 \uc120\uc5b8

\ubcc0\uc218\ub294 \uc790\ub8cc\ud615\uacfc \ud568\uaed8 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\uc2dd\uc73c\ub85c \uc120\uc5b8\ub41c\ub2e4.

int a ;
byte b, B = 0 ;
long distance = 1000L ;

\uccab \ubc88\uc9f8 \uc120\uc5b8\uc5d0\uc11c \uc2dd\ubcc4\uc790 a\ub294 int \ud615\uc758 \uc790\ub8cc\ub97c \uc800\uc7a5\ud560 \uc218 \uc788\ub294 \ubcc0\uc218\ub97c \uc758\ubbf8\ud55c\ub2e4. \ub530\ub77c\uc11c \ubcc0\uc218 a\ub294 -2,147,483,648 ~ 2,147,483,647 \uc0ac\uc774\uc758 \uc815\uc218\uac12\uc744 \uac00\uc9c8 \uc218 \uc788\ub2e4.

\ub450 \ubc88\uc9f8 \uc120\uc5b8\uc5d0\uc11c\ub294 \uc2dd\ubcc4\uc790 b\uacfc B\uac00 -128 ~ 127 \uc0ac\uc774\uc758 \uac12\uc744 \uac00\uc9c0\ub294 byte \ud615 \ubcc0\uc218\uc784\uc744 \uc120\uc5b8\ud558\uace0 \uc788\ub2e4. \uc774\uc640\uac19\uc774 \uc5ec\ub7ec\uac1c\uc758 \ubcc0\uc218\ub97c \ub3d9\uc2dc\uc5d0 \uc120\uc5b8\ud560 \ub54c\ub294 \uac01 \uc2dd\ubcc4\uc790(\ubcc0\uc218\uba85)\uc744 ‘,’\ub85c \uad6c\ubd84 \ub098\uc5f4\ud558\uba74 \ub41c\ub2e4. Java\ub294 \ub300\uc18c\ubb38\uc790\ub97c \uc11c\ub85c \ub2e4\ub978\uac83\uc73c\ub85c \ucc98\ub9ac\ud558\uae30 \ub54c\ubb38\uc5d0 b\uc640 B\ub294 \uc11c\ub85c \ub2e4\ub978 \ub450 \uac1c\uc758 \ubcc0\uc218\uc774\ub2e4. \uadf8\ub9ac\uace0 \ub450 \ubc88\uc9f8 \ubcc0\uc218 B\ub294 \ub300\uc785\uc5f0\uc0b0\uc790 ‘=’\ub97c \ud1b5\ud574 \ucd08\uae30\uac12\uc73c\ub85c 0\uc744 \uac00\uc9c0\ub3c4\ub85d \uc120\uc5b8\ud558\uace0 \uc788\ub2e4.

\uc138 \ubc88\uc9f8 \uc120\uc5b8\uc5d0\uc11c\ub294 \uc2dd\ubcc4\uc790 distance\uac00 long \ud615 \uc790\ub8cc\ud615\uc744 \uc800\uc7a5\ud558\ub294 \ubcc0\uc218\ub85c \ucd08\uae30\uac12\uc73c\ub85c 1600\uc744 \uc800\uc7a5\ud558\ub3c4\ub85d \uc120\uc5b8\ud558\uace0 \uc788\ub2e4. \uc774 \uc120\uc5b8\uc5d0\uc11c long \ud604 \uc0c1\uc218\ub97c \uc758\ubbf8\ud558\ub294 L\uc774 1600 \uc704\uc5d0 \ubd99\uc5b4\uc788\uc74c\ub97c \uc8fc\uc758\ud558\uc790.

\ub2e4\uc74c \ud504\ub85c\uadf8\ub7a8 “variables.jsp”\uacfc \uadf8 \uacb0\uacfc\ub97c \uc0b4\ud3b4\ubcf4\uc790.<\/P>
\n

<%@ page language=”java” contentType=”text\/html; charset=EUC-KR”
    pageEncoding=”EUC-KR”%>
<!DOCTYPE html PUBLIC “-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN”
“http:\/\/www.w3.org\/TR\/html4\/loose.dtd”>
<html>
<head>
<meta http-equiv=”Content-Type” content=”text\/html; charset=EUC-KR”>
<title>Insert title here<\/title>
<\/head>
<body>
<%
int num1 = 100;
double num2 = 100.9;
char a1 = ‘\\u0041’, a2 = ‘A’, a3 = 65;
%>
<%= num1 %>
<%= num2 %>
<%= a1 %>
<%= a2 %>
<%= a3 %>
<\/body>
<\/html><\/DIV>

\"\uc0ac\uc6a9\uc790

variables.jap \uacb0\uacfc<\/p><\/div>
\ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c num1\uc740 \ucd08\uae30\uac12 100\uc744 \uac00\uc9c0\ub294 int \ud615 \ubcc0\uc218\uc774\uba70, mun2\ub294 \ucd08\uae30\uac12 100.9\ub97c \uac00\uc9c0\ub294 double\ud615 \ubcc0\uc218\uc774\ub2e4. \ub610\ud55c a1, a2, a3\ub294 \ucd08\uae30\uac12\uc744 \uac01\uac01 ‘\\u0041’, ‘A’, 65 \ub97c \uac00\uc9c0\ub294 char \ud615 \ubcc0\uc218\uc774\ub2e4. \uadf8\ub7f0\ub370 \ucd9c\ub825 \uacb0\uacfc\ub97c \ubcf4\uba74 num1\uacfc num2\ub294 100\uacfc 100.9\ub97c \ucd9c\ub825\ud558\uc600\uc73c\ub098 a1, a2, a3\ub294 \\u0041, A, 65\uac00 \uc544\ub2cc \ubaa8\ub450 A\ub97c \ucd9c\ub825\ud558\uace0 \uc788\ub2e4. \uc774\ub294 \ud45c\ud604\uc758 \ucc28\uc774\uc5d0\uc11c \ube44\ub86f\ub41c \uac83\uc73c\ub85c \ucef4\ud4e8\ud130 \ub0b4\ubd80\uc801\uc73c\ub85c\ub294 ‘\\u0041’, ‘A’, 65 \ubaa8\ub450 \uac19\uc740 \uac12\uc73c\ub85c \ucc98\ub9ac\ub418\uba70 \uc774\ub294 \ubb38\uc790 ‘A’\ub97c \uc758\ubbf8\ud55c\ub2e4. \ub530\ub77c\uc11c \ubaa8\ub450 A\ub85c \ucd9c\ub825\ub41c \uac83\uc774\ub2e4.


<\/p>\n","protected":false},"excerpt":{"rendered":"

\uc790\ub8cc\ud615 (Data Type)\uc790\ub8cc\ud615\uc774\ub780 \ubcc0\uc218\ub098 \uc0c1\uc218\uac00 \uc800\uc7a5\ud560 \uc218 \uc788\ub294 \uc790\ub8cc\uc758 \ud615\uc2dd\uc744 \uc758\ubbf8\ud55c\ub2e4. \ub2f9\uc5f0\ud55c \uc598\uae30\uc9c0\ub9cc JSP \ud504\ub85c\uadf8\ub798\ubc0d\uc5d0\uc11c\uc758 \uc790\ub8cc\ud615\uc740 Java\uc758 \uadf8\uac83\uacfc \uc644\uc804\ud788 \ub3d9\uc77c\ud558\ub2e4. \uc790\ub8cc\ud615\uc740 \ud06c\uac8c \uc22b\uc790\ud615, \ubb38\uc790\ud615 \uadf8\ub9ac\uace0 \ubd88\ud615\uc73c\ub85c \uad6c\ubd84\ud560 \uc218 \uc788\ub2e4.\uc22b\uc790\ud615 (Numeric Type)\uc22b\uc790\ud615\uc740 \ud06c\uac8c \uc815\uc218\ub97c \uc704\ud55c \uc790\ub8cc\ud615\uacfc \uc2e4\uc218\ub97c \uc704\ud55c \uc790\ub8cc\ud615\uc73c\ub85c \uad6c\ubd84\ub418\uba70 \uc22b\uc790\ub97c \ud45c\ud604\ud560 \uc218 \uc788\ub294 \ud06c\uae30\uc5d0 \ub530\ub77c \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ubd84\ub429\ub2c8\ub2e4. \uc815\uc218\ud615 (Integer Type)byte (8 bit) -128 ~\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":3,"featured_media":2714,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[244],"tags":[15,29,108],"class_list":["post-2713","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jsp","tag-eclipse","tag-jsp","tag-108"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.happyfam.or.kr\/ysoh\/wp-content\/uploads\/sites\/3\/1\/cfile4.uf.160AA50E4A9A0E14041564.png?fit=508%2C287&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p776QY-HL","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/posts\/2713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/comments?post=2713"}],"version-history":[{"count":0,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/posts\/2713\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/media\/2714"}],"wp:attachment":[{"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/media?parent=2713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/categories?post=2713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.happyfam.or.kr\/ysoh\/wp-json\/wp\/v2\/tags?post=2713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}