华为面试Java面试题

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JAVA
ᔠ☢⚪2011-06-20

1
Java☢⚪᦮ᳮ..................................................................9Java☢ᔣ....................................................................91.super஺this஺Ḅ..................................................92.ᵨpublic,protected,private,ᑏḄ.........................93.᝞!"#஺.....................................................94.JAVAḄ$%&ᡲ(ᑴ*ᚗ,-ᦈ(ᑴ....................................105.ᙠJAVA01᝞2345Ḅ678ᝅ:;.............................106.<=>java?ᑡᓄ1᝞2BCjava?ᑡᓄDᑏ,•GBHI...................107.JG”.java”Kᦻ%0>ᔲNᒹP6GQD>ᑁSQIᨵ<=▲ᑴ....108.᣸?WᨵXYZ[\]ᑡ^஺ᵨJAVABCJG_`᣸?..............109.Overload*OverrideḄ஺OverloadedḄ[\>ᔲNᦋbc-dḄQe….1110.FinalQᨵ<=ᱯh...................................................1111.ij᎛QḄ᡻mn?o⚪1JpW>⌱r⚪1ostuᡭᓺ<=..........1112.ᑁSQḄBC[x?.....................................................1213.ᵨJAVABCJZ᣸?1JAVAQBC?ᑡᓄḄ[\DzZI...............1314.᝞ᙠCOLLECTION᪾|01BC}~⌕BC<=᪵Ḅ...............1315.ᵨᐭ\m᣸?ṹ᝞!..............................................1316.ᑏJGḄᦪ1ᐭ
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"ᡃABC">"ᡃABC+ḄG"஺.......1415ஹJava1ᡭᓺ᧤ᜩḄ45¡............................................1516ஹᦻ%¢ᑏ1BCJG£ᦪᘤ................................................1517ஹᢣ!☢?Ḅ¦m§¨஺...............................................1618ஹ©Q*Ḅ...................................................1619ஹ<=>QḄcª(ᑴ?....................................................1620ஹQḄcª(ᑴ0Ḅᒹ᪶¬Q............................................1721ஹᑮClassḄ¯G°><=............................................1722ஹ᝞2ᖔ²Q0ḄJG[\...............................................1723ஹ᝞2tᦪde³ᣚ
ᦪDInteger,Double?....................................................1724ஹ᝞2tᦪ³ᣚ
.................................................1725ஹ᝞2µ¶ᦪh5·¸1¹º»¼ᐭ஺......................................1726ஹ᝞2½ᨴ¿1¶ᑖÁ.............................................1827ஹ᝞2Â1970½ᑮCᙠḄÃÁᦪ.......................................1828ஹ᝞2ÄÅG¿Æ>4ᨴḄᨬÈJᜩ....................................1829ஹ᝞2ÉxᓄÆ.......................................................1930ஹṹ³ᣚ1Ê᪵BCtGB2312ṹḄ³ᣚ
ISO-8859-1ṹḄ஺.......................................................................................................................................................1932ஹStrings=newString
"xyz";ËÌÍYGStringObject?.................................................1933ஹfloatefloatf=3.4>ᔲÎÏ?..............................................1935ஹÐJÑÒᵨḄQ1ᒹ11]ᔜ^5G................................1936ஹjava0uÔᙠᑁÔÕÖᔩ1]ØᓫÚÛ஺..................................20

237ஹjava0BC6᝱Ḅ(ᑴ><=..........................................2038ஹᚗ,-ᦈᘤḄÝÞßᳮ><=ᚗ,-ᦈᘤNàá-ᦈᑁÔᔩᨵ<=â\ãäåæçè(mᚗ,-ᦈ.................................................2039ஹ☟᝱bê*BHbêḄ.............................................2041ஹ>ᔲNÂJGstatic[\ᑁSëìstatic[\Ḅíᵨ................2042ஹᑏclone஺[\î1åÒWᨵJmṹ1><=............................2043ஹJAVAïð᝞2mñÒᜐᳮ1ᐵôthrows,throw,try,catch,finallyᑖ⊤<=ö÷ᙠtryᙽ0NùñÒᔩ.........................................2145ஹᑈû᣸?\.............................................................2146ஹStringandStringBufferḄ...........................................2247ஹᵨjavaṹᑏᚮ᪘....................................................2248ஹþᔠḄᵨ><=......................................................2349ஹþᔠḄåᵨ[\ᨵÿ?ᵨ?().............................2350ஹArrayList,Vector,LinkedListḄឋᱯឋHashMapHashtableḄ.......................................................................................................................................................2451ஹCollectionCollectionsḄU஺........................................2452ஹSetḄᐗ!"Ḅ#$ᵨᩭᑖ!"'ᔲᕖ*ᵨ==,equals஺*-.ᨵ0?ᵨcontainsᩭᑖᔲᨵ!"Ḅ12஺,3ᵨ஺.....2453ஹList,Set,Mapᔲ456Collection78*..................................2454ஹ☢ᔣ12Ḅᱯ;ᨵ<☢...............................................2555ஹStringᨬ>?ḄᦪABCᔩ*............................................2556ஹintIntegerᨵ*..............................................2557ஹEFGHI'JKHIᨵ0HL*........................................2558ஹ&&&Ḅ*........................................................2559ஹfinal,finally,finalizeḄ*.............................................2562ஹheapstackᨵ*...............................................2663ஹStaticNestedClassInnerClassḄL*................................2664ஹG᎛ᵨassert?............................................................................................................2665ஹGC*O⌕ᨵGC?...........................................................................................2666ஹshortsi=l;sl=sl+1;ᨵ┯*shortsi=l;sl+=1;ᨵ┯?.............2667ஹMath.round(11.5)RSTU*Math.round(-11.5)RSTU?......................2768ஹJavaᨵVᨵgoto?.................................................................................................................2769ஹWᡃJYZᨬI[ᑮḄruntimeexception......................................................................2770ஹ78ᔲ]4578*^2Bᔲ]_`(implements)78*^2Bᔲ]45_aB(concreteclass)?....................................................................................................................2771->abstractḄmethodᔲ]LGstatic,ᔲ]LGnative,ᔲ]LGsynchronized?................................................................................................................................2772ஹᦪbᨵVᨵlength஺cY*StringᨵVᨵlength஺cY*..............2873ஹ᪀⌼ᘤConstructorᔲ]goverride?............................................................................2874ஹᔲ]h45StringB*..................................................2875ஹswtichᔲᵨᙠbytej#ᔲᵨᙠ10ngj#ᔲᵨᙠStringj*..2876ஹtry{}ᨵ■—Yreturnop#$qrᙠcYtrysḄfinally{}Ḅcodettg᡻F#G᎛g᡻F#ᙠreturnv,s?...................................2877ஹwx⚪zᵨᨬᨵᦔ᳛Ḅ}2~h8RS*...........................28

378ஹY12L(x.equals(y)==true),ᓾ]ᨵLḄhashcode,cp11?.......................................................................................................................................................2879ஹJY12gᦪ⌴ᑮJYs#]ᦋcY12Ḅឋ#]ᓄsḄ#$cᑮ⌴,ᵨ⌴*......................2980ஹtrᢈ.......................................................2981ஹwx⚪zᑏJYSingletonᩭ஺..........................................2983ஹJavaḄHIᜐᳮᑴḄ¡ᓫ£ᳮ¤ᵨ஺................................3084ஹᚗ¦ᦈḄ¨©£ᳮ஺ὃ⇋2ᦈᑴ஺............................3085ஹ¬J®JVM¯°classᦻ²Ḅ£ᳮᑴ*.................................3086ஹcharC³´JYᦻµ¶?O?............................3088ஹᑏJYx·#¸ᦻ²(c:\testtxt)¹¶º»"mobnet”`Ḅ½ᦪ*.....30java>ẠB¿(ioÀ#ÁᔠB#Ãx#Socket.AWT,Swing,sql).............................................311ஹjavaᨵBCḄÀ*JDKOÄBCḄÀÅÆÇJ^2BhÆ45#ÈÉ.ᑖ<B*.........................................................312ஹÊËJYÃxᵨrun(),start஺?.........................................313ஹÃxḄ>?ᭆÍஹÃxḄ>?Î᝱hÐÎ᝱ÑÒḄᐵÔ......................314ஹTÃxᨵ_`#3*LÕᨵ_`#3*ᵨᐵÖ¶×⛲LÕ*stop஺suspend஺O0Ù₞Ûᵨ*...........................31ᵨsynchoronized×⛲LÕ஺.................................................325ஹÁᔠ᪾Ýᨵ*.........................................................3212ஹÞß4YÃx#ᐸYÃxĽ1já¯1,᜜YÃx1jĽãU1஺ᑏx·......................................................................3213ஹLÕHÕᨵHL#ᙠäå®ᑖÛᵨÉ.*æçè஺.............3414ஹsleep()wait()ᨵ?.............................................3415ஹJYÃxéᐭJY12ḄJYsynchronizeds#ᐸ-Ãxᔲ]éᐭ12Ḅᐸ-?..............................................................3417ஹëᐭëÀḄᳮì:.......................................................3418ஹÈᑏJYx·Ḅîᑏ#⌕ïᵨðJñòÀJóòÀ஺.......3519ஹ᝞0ᑡöY÷ø®Ḅᡠᨵᦻ²..........................................36Socket....................................................................................................................................................3720ஹᵨsocketúᑏûᡝýþÿᘤ
Ḅ⌕ᡝ〈ᦪḄᦪ....................................................................3723ஹJAVAḄCollectionFrameWork(ᒹ᝞ᑏ"#Ḅᦪ$᪀)?..........3924ஹ()*+ᡠ-⍝Ḅ/01Ḅ23........................................39jdbcᦪ45ᢈ7...............................................................391ஹJDBC᝞89:ᜐᳮ..................................................392ஹᑏ*=>ᙠJdbc@ᵨḄBC.............................................393ஹDE+FStatement,PreparedStatement,CallableStatementḄᳮG................394ஹJava45ᦪHḄ1I................................................405ஹJDBCḄ᪶KLMᐸOᵨPQR.........................................406ஹ᡻TUVW0ᵨXY>L᝞ZO[*\ᦪ(ZO).......................418ஹ]^_+ᑏY`JdbcaOracleḄ0b....................................419ஹClass.forNameḄOᵨcQR⌕ᵨ.........................................4110ஹJdoPQR.............................................................41

411ஹᙠORACLEᜧᦪefḄᑖ⚓Gi23஺YkᵨlmID23nᨵPpqrᝅ23........................................................................................................................................................41Webt0Jsp&Servletᢈ7........................................................421ஹDᓫ))tomcatḄvw.................................................422ஹJSPx᝱INCLUDEz☟᝱INCLUDEḄ|}............................433ஹforward~redirectḄ|}................................................434ஹServletḄ$᪀PQR.................................................43Servlet..................................................................................................................................................435ஹ᝞Y>"Ḅservlet?.........................................................................................436ஹServletḄᕜPQR?.................................................437ஹjspPY•>servletPᔲ.............................................438ஹ(ᑡjspḄஹᢣMxO.........................................439ஹJSPḄᑁwFM23....................................................4410ஹ)*ᙠJSP⚓☢PRᑖ⚓Ḅ?.........................................44IKincludeḄ2Ḅ|}...........................................4712ஹjsp⚓☢2ᑖ}PQR?ᨵQR|}?...........................4713ஹEJSP~ServletḄ|}ஹᐳஹᔜ"¢ᵨḄ¤.......................4714ஹᙠJSP᝞¥mᡝ
Ḅ(᝞¦>Jspᦻ¨Ḅ©ª«.......4715ஹECookie~SessionḄOᵨ|}~ᔜ"Ḅ¢ᵨ¤Session¬Oᳮ஺….4716ஹ)¯JsperrorPageḄOᵨ¢ᵨ¤஺.................................4817ஹᙠJsp᝞°ᵨJavaBeans....................................................................................4819ஹDᓫJSPḄ᪗²H...................................................4820ஹServletḄ᪶KLᨵX³ᔜᨵQRᱯ?.................................4821ஹServletµ⌕ḄᒹᨵX³ᨵQR|}...................................4922ஹ)*ServletḄᕜ¶)*Servlet~CGIḄ|}....................4923ஹQR·¸f¹ᵨdoGet()~doPost()?.............................................................................4925ஹ᝞servletḄᓫ/0º............................................4927ஹRequestFḄ»⌕23¼................................................4928ஹᡃ¾ᙠweb¢ᵨ¿W0À@⍗ᑮ[*¦tṹḄÄÅ᝞iso8859-lÆ᝞[*Y>¦tṹḄÄÅÇ.................................................5030ஹServlet᡻TÈYkÉ=>23......................................505HibernateᢝËqᢈ7...........................................................511ஹᙠmyeclipseÌᐭhibernateÎ᛻ḄᐰW0PQR............................512ஹhibernateḄ᪶Kvwᦻ¨PQRMᐸOᵨ..................................513ஹhibernateḄ᪶KLPQRѾḄÒᐵPQR?µ⌕Ḅ23PQR?........514ஹᐵὶ:....................................................................515ஹhibernateḄone-to-manyᡈmany-to-one@ᵨḄ2PQR...............526ஹCriteriaḄOᵨ..........................................................527ஹDetachedCriteriaḄOᵨ.................................................528ஹQuery........................................................................................................................................529ஹ×ØᐵḄ..........................................................5310,tomcataBÙ:ᙠÚᘤ⚜ᐜÝÞn>aBßᡝ
àᵨµáßᓄ]ãäBm஺....................................................................5411ஹFḄpᜧå᝱.........................................................55

512ஹhibernate@æçᓄèᶍ................................................566.iBatisᢝËqᢈ7...........................................................56ᵨibatisḄê¼...........................................................56jdbcஹhibernateஹibatisḄ|}...............................................56ibatisḄ᪶Kvwᦻ¨:........................................................57ibatisḄ᪶KL:..............................................................577Structsë☢ìᑴqᢈ7..........................................................581ஹ()*struts᪾ïḄ=ᜧð¨............................................583ஹstrutsḄ᪶KLᨵX³ᙠMVCºᐸF¢ḄᐵPQR...............584ஹStrutsḄᜐᳮ(ḄᐰW0PQR?.........................................585ஹᙠstruts᝞WY>urlñᑮY>action,ÑḄ᪶Kvwᦻ¨PQR?.......596ஹcQR°ᵨMVC,ᐸ»⌕òḄPQR.....................................597ஹFóMVCᙠactionF¢ᨵLᨵ=ᔜᨵQROᵨ......................598ஹstrutsḄ᪗²ᨵ=L(ᑡô¶)¯ᐸOᵨ?.................................599ஹ᝞ᙠstrutsvwᦪõᙠQRᦻ¨?ᵨQR᪗ö?᝞m*DataSource?...........6010ஹ᝞ᙠjbuilder¿struts?...........................................................................................6011ஹ᝞strutsḄvalidator᪾ï?.........................................6013ஹ᝞÷▭ᓄ?........................................................62÷▭ᓄ:àᵨùᦋûṹ〉ᵨóàḄýþ÷ÿ...............................628JSF
☢ᑴᢈ............................................................621ஹJsfḄ᪶ᵨ?ᨵᵨ.........................................622ஹJsfḄLiftCycleᜧᕜ.....................................623ஹ᝞!webḄBean,ᵨ᪗#஺᝞%&jsp⚓☢(Bean)*ᙠ,-./ᜐᳮ?.....................................................................624ஹJsf23Ḅ᪗#?..................................................635ஹjsfᵨᡝ
☢5678ᨵ9:ᔜ<⊤...............................636ஹ⊤>ᜐᳮ?@A..........................................................637ஹjsfḄ᪗#BᨵC.....................................................639SpringEᵨ᪾Gᢈ...........................................................641ஹSpringHStrutsḄIJstrustsK,LMNMVC7OḄ,PwebḄᜐᳮ஺642ஹaop,aopḄᵨ...........................................643ஹaopḄᐵRSTᨵ:UVᐵW..............................654ஹXYZᐭḄ\Oᨵ9L:ᔜ........................................655ஹspringḄ᪶ᨵ:ᔜᨵᵨ..................................656ஹApplicationcontextḄᵨ.................................................657ஹ᝞]^_`ᳮ........................................................658ஹ᝞]^aᐭweb᪾G.................................................659ஹ᝞]^b6ᜐᳮ........................................................6610ஹspringḄioc?di<⊤cd?..........................................66ஹ᝞ᙠspring]^e▭ᓄ?................................................6612ஹspringḄhiḄj⌕᪗#?ᨵᵨ..............................6713ஹspring(ejb2.0ḄblᳮmnḄopq.................................6714ஹspringḄjdbc(rsḄjdbcᨵIJ:ᐸ᪶ᨵ?..................67

615ஹᙠspringᨵ9Lblᳮ:ᑖJ................................6716ஹᙠspring᝞h<ṹḄblᳮ.......................................6817ஹᙠspring᝞hwᘤḄblᳮ:UᐵḄᨵ?......................6818ஹ᝞yspring(hibernatezᔠᙠ:•-}~◤⌕hibernate.cfg.xmlᦻ6ᔲ6919ஹspring+hibernateḄhiᦻ6Ḅj⌕ᨵ?᝞hi...................6920ஹspring+hibernateḄ<ṹ]^:N]^-,*N•P•P:ᨵᵨ஺....................................................................6921ஹ᝞hispring+struts?......................................................................................................6922ஹ᝞ᙠweb᛻hiapplicationContext.xmlᦻ6........................6924ஹJsfHspringḄIJ.....................................................70jsfK,LMNMVC7OḄ,PwebḄᜐᳮ:nstrutsn஺............70Ejbᢈ........................................................................701ஹweblogicḄ........................................................702ஹᙠejb]^one-to-many...................................................................................................703ஹejbᡠᵨḄᢈ:...........................................................714ஹ]^ejb9P:9P.................................................715ஹ]^ejbUᐵḄhiᦻ6...........................................716ஹejbḄᑖ?IJ..........................................................717ஹᙢ(ḄIJ஺..............................................728ஹᜐᳮḄ&?.........................................................729ஹstatefullḄᕜ.......................................................7210ஹstatelessḄᕜ.....................................................7211ஹentityBeanḄᕜ:...................................................7212ஹEJB◤]^ḄlᡈHomeᔩ:¡ᳮᵫ஺...............7313ஹEJBḄ£¤¥ᑴ.........................................................7314ஹEJBMNCᢈ]^Ḅ¦§¨SessionBeanHEntityBeanḄIJ:....7315ஹEJBḄᑖ?ᔜᨵᱯq?.........................................7410ஹEJBj⌕Ḅhiᦻ6?ᵨ.....................................7415ஹ§¨ᦪ«¬Ḅ®¥ᑴ.......................................7416ஹEJB2.0ᨵCᑁw?ᑖJᵨᙠ°ᔠEJB2.0HEJB1.1ḄIJ?............7418ஹEJB(JAVABEANḄIJ............................................7519ஹEJBḄ±⁐H³P´...................................................7520ஹEJBwᘤµ¶Ḅ·l.....................................................7521ஹEJB¸¸*EJBἭ»Ḅ¼ᨵC..................................7626ஹEJBḄMG᪀.........................................................7630ஹ᝞ᙠweblogic./sslhi(¾ᡝ¿ḄÀÁhiᡈ§§j2eeÂ᪗ÃÄ./sslḄhi.........................................................................7731᝞ÅÆᙠweblogicÇÈḄEJB?..........................................................................77WebServiceᢈ.................................................................781ஹWebService?............................................................................................................782ஹWebwᘤ........................................................783ஹEᵨ·lᘤᨵ......................................................785ஹ᝞Éweblogicᢣ*ᜧËḄᑁÌ..........................................786ஹ᝞Í*ḄweblogicḄÎÏ7OÂÐ7OÄ(ÑÒ7O?...............78

77ஹ᝞ÎÏÓ◤ÔᐭᵨᡝS(Õṹ.......................................798ஹᙠweblogicᳮᑴᑖ•PEᵨÖÂᡈὅ§,PØÙ,Domain./jms?ejbᡈ¬ÛUᐵÜÝ./hiÞ:]▭ßÌᙠᦻ6.........................799ஹ§§weblogic,PDomainḄpḕáâz᪀m᝞⌕ã■PᓫḄhelloWorld.jspæᐭáâç:ᯠḄᙠéêᘤëì}ᡭᐭhttp://j¥:¿î//helloword.jspì}~Æᑮð/zyñòm᝞óᐸᵨᑮñ,PôõᑏḄjavaBean÷᝞ø?.............7912ஹCORBA?ᵨ⌶............................................7913ஹ§§ᙠweblogicÐúÝBeanÓḄpersistent(non-persistenḄûJ......7914ஹWEBSERVICESTüý஺JSWDLÐᒹḄÿ஺JAXPஹJAXMḄ஺SOAPஹUDDLWSDL஺..................................................80j2eeMVCஹModell,Model2..................................................................................801ஹj2eeᵨḄᔆ஺.....................................802ஹᡠ៉ᡈḄj2eeḄᵨ?Ḅ!"#………813ஹ%☢ᐵ(J2EEḄ)*................................................814ஹ+J2EEஹJ2SEஹJ2MEḄ-.஺.........................................815ஹ/01ᵨᑮ34!?ᵨᙠ678ᔠ...............................816ஹJ2EE:67...........................................................827ஹJ2EE:ᢈ<=:>?=:᪾A..........................................82ᐸC............................................................................821ஹDEFGḄ᪆ᘤᨵ4!?.................................................822ஹDom᪆ᜐᳮḄM:67..............................................823ஹSax᪆ᜐᳮḄM:67...............................................844ஹDomNSaxOPQRḄSTU:67......................................855ஹ᝞WXDomYᑏᐭᑮᦻ]...........................................856ஹᵨjdom᪆xmlᦻ]^᝞W_ᦻ`⚪?.................................857ஹXMLᦻ᫏cdᨵefQRghᨵWij-.᪆XMLᦻ᫏ᨵkl........................................................................858ஹ᪗nopqUMLḄᔜs...........................................869ஹBSNCSḄὶuN-.஺.................................................8610ஹUmiḄᭆw:67?F⌕Ḅᐹ:67.....................................87Umiz{opq..............................................................8711ஹUmiḄᭆwḄ|ᜧsf:67?ᨬḄs:67?ᔜᨵ67ᱯU........8713ஹᙠs᝞W?......................................................88

8Java☢⚪Java☢ᔣY1.super஺Nthis஺Ḅ-.This()zDEḄY,super᱄Y஺Super()zᙠ`᱄ḄᡂᕒᑣḄthisC⊤DEYDᯠᡠᨵḄ¡1¢£`.ᙠ᪀⌼¦ᦪ᝞¨©ªᨵᑏsuper஺,«¬ᘤ®¯°ᐭ.±:᝞¨᱄ªᨵ²³´ᦪḄ᪀⌼¦ᦪᡈµ¦ᦪ¶·ᨵᓄ3(ᵨprivate¹⛲).»^¼ᐭ᱄Ḅ½¾ᓄ᪀⌼.this¿ªᨵµ⌕À,ÁQi¿ý¾ᓄḄ᪀⌼.ᙠl#superthisÄᵨḄl#¿Å²Æ3.Dzsuper⌕ὃ⇋:ᔲË`ᐸ᱄Ḅ¡.2.ÌᵨÍpublic,protected,private,£²ᑏ^Ḅ-.>Public:²ÎᒹஹÎᒹஹᑁ1¢ᵨ>Privatezᑁ>Protected:²ÎᒹḄஹÎᒹஹᑁ1¢ᵨ>²ᑏ^:Îᒹᑁஹᑁ3.«MÓÔ᝞%sf஺**********ṹ᝞%zpublicclassPrint{publicstaticvoidmain(String[]args){for(inti=0Öi<5Öi++){for(intj=5Öj>i;j--){System.out.print(”ਭ”)Ö)System.out.printIn()Ö

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109.OverloadOverrideḄFG஺OverloadedḄ=>ᔲ./ᦋIJKḄ2LḄᑏOverride,L⌚¢᱄LḄ'-L7~᱄LḄCᵨ¤ᵨḄ¥,LḄ஺¦Overloading\]L¨]'}©'lᦪ]ᦪLª«஺¬ὅ®,Java¨᝱ឋḄ«⊤H஺OverloadedḄ,01ᦋ³´µḄLª஺1,publicclassCtest()(Publicstaticvoidmain(){System,out.prinln(8+8+”88"+8+8);16888810.Final2ᨵᱯNÃឋÄÅ«01overriddingL«01ÆÇ11.OPQ᎛2Ḅ᡻TUV⚪&X9⌱Z⚪V[\]ᡭᓺÈ:᱄Lpackagetest;publicclassFatherClass(publicFatherClass()(System,out.printin("FatherClassCreate");))Lpackagetest;importtest.FatherClass;publicclassChiIdClassextendsFatherClass

11publicChildClass(){System,out.printin(z'ChildClassCreate");}publicstaticvoidmain(String[]args){FatherClassfc=newFatherClass0;ChildClasscc=newChildClass();))8^ÓxC:>javatest.ChildClassFatherClassCreateFatherClassCreateChildClassCreate12.ᑁḄÈÕÖṹ᝞×packagetest;publicclassOuterClass(privateclassInterClass(PublicInterlass()(System,out.printin(^InterClassCreate");))publicOuterClass()(InterClassic=newInterClass();System,out.printin(^OuterClassCreate");)publicstaticvoidmain(String[]args)(OuterClassoc=newOuterClass();))8^ÓxC:>javatest/OuterClassInterClassCreateOuterClassCreate

1213.ᵨJAVA᣸JAVAᑡᓄḄ()14.᝞ᙠCOLLECTION᪾⌕!᪵Ḅ#$15.ᵨ%ᐭ'(᣸)ṹ᝞+packagetest;importjava.util.classInsertSort(ArrayListal;publicInsertSort(intnum,intmod)(al=newArrayList(num);Randomrand=newRandom();System,out.println(z'TheArrayListSortBefore:'z);for(inti=0;i=((Integer)al.get(MaxSize-1)).intValue())(al.add(MaxSize,templnt);MaxSize++;System,out.println(al.toStringO);}else{for(intj=0;j=templnt.intValue())(al.add(j,templnt);MaxSize++;

13System.out.println(al.toString());break;}}))System.out.println(zTheArrayListSortAfter:");for(inti=0;inum)break;)

14temp=temp+source.charAt(i);)System.out.println(temp);15ஹJavaab,ᡭᓺ᧤ᜩḄQfpublicclassYesterdayCurrent{publicvoidmain(String[]args){Calendarcal=Calendar,getlnstance();cal.add(Calendar.DATE,-1);System,out.println(cal.getTime());16ஹᦻgᑏ"#&'hᦪᘤpublicintgetNumO{inti=-1;try(Stringstriê஻஻ëBufferedReaderin=newBufferedReader(newFileReader(f));while((stri=in.readLine())!=null){i=Integer,parselnt(stri.trim());)in.close();}catch(Exceptione){e.printStackTrace();)returni;)publicvoidsetNum(){inti=getNumO;i++ëtry(PrintWriterout=newPrintWriter(newBufferedWriter(newFileWriter(f,false)));out.write(String.valueOf(i));஻0î,ïṹḄðñ'᝞xPᑏᐭintḄv'-^HjavaïṹòwindowsïṹḄóô'ñõõᜐᑏᐭḄ,Stringout.close();}catch(Exceptione){e.printStackTrace();

15))17ஹᢣl☢bḄnTop஺classA(static{System,out.print("1");)publicA(){System,out.print("2");))classBextendsA{static{System,out.print("a");)publicB(){System,out.print("b");))publicclassHello{publicstaticvoidmain(String[]ars){Aab=newB();஻᡻ᑮõᜐ'Óxla2bab=newB();//᡻ᑮõᜐ'Óxla2b2b))Y:LḄstaticṹú'01û6,L✌ýþ¦(Kÿ
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161ឋஹᖔ⏨஺Springᑗ8-9:ஹstrutsஹhibernate8-;<Ḅ9:'(=>Ḅ஺20ஹ*Ḅ+,-ᑴ/Ḅᒹ1᪶3*4java.lang.Classjava.lang,refrection.Methodjava.lang,refrection.Fieldjava.lang,refrection.Constructorjava.lang,refrection.Modifierjava.lang,refrection.Interface21ஹ5ᑮClassḄ78
9:4?@.getClass()classᡈInteger,type(int)Integer,class(java.lang.Integer)Class.forName();22ஹ᝞;ᖔ=*/Ḅ>?4CDEClassᦪGHIḄJᦪ;

1726ஹ᝞wxyᨴ{|Qᑖ~?Calendarc=Calendar.getlnstanceO;c.set(Calendar.YEAR,2004);c.set(Calendar.MONTH,0);c.set(Calendar.DAY_OF_MONTH,31);System.out.println(c.get(Calendar.YEAR)+஻஻+(c.get(Calendar.MONTH)+1)+஻஻+c.get(Calendar.DAY_OF_MONTH));27ஹ᝞wx1970yᑮ#ᙠḄ~ᦪJava.util.Datedat=newDateO;longnow=dat.getTime();28ஹ᝞w'{ᨴḄᨬ&ᜩM\/ᜩTM\ḄᨴUbTFᨬ/ᜩ஺/eᨴḄ/ᜩT/eᨴḄ/ᜩTpublicstaticvoidmain(String[]args)(Calendarc=Calendar.getlnstance();c.set(Calendar.YEAR,2004);c.set(Calendar.MONTH,0);c.set(Calendar.DAY_OF_MONTH,30);Calendarcl=(Calendar)c.clone0;System,out.printin(c.get(Calendar.YEAR)+஻஻+(c.get(Calendar.MONTH)+1)+஻஻+c.get(Calendar.DAY_OF_MONTH));c.add(Calendar.DAY_OF_MONTH,1);if(c.get(Calendar.MONTH)!=cl.get(Calendar.MONTH))(System.out.printin(஻Fᨬ/ᜩ஻);}elseSystem.out.printin(஻UF/,ᜩ஻);

1829ஹ᝞ᓄ{Importjava.text.SimpleDateFormat;SimpleDateFormatsdf=newSimpleDateFormat(/zyyyy-MM-ddhh:mm:ss஻)GDatedat=newDate();஻ᓄ?;Stringstr=sdf.format(dat);System,out.println(str);஻;ᓄ?Java.util.Datedl=sdf.parse("yyyy—mm—dd");30ஹaṹᣚ᪵"#\GB2312aṹḄᣚISO-8859-1aṹḄ஺Stringa=newString(஻஻.getBytes(஻gb2312஻)T“iso-8859T஻)Stringa=newString(஻஻.getBytes(஻iso-8859-l஻))G32ஹStrings=newStringxyz”);;'StringObject?New/e,“XYZ”ᩭF/ee33>floatLfloatf=3.4ᔲ¡┯T£MFfloatf=3.4f᝞Ffloatf=3(᦮ᦪ)§¨35ஹ&ᵨḄ2ᒹst?ᔜ@5'©ᵨḄ@BufferedReaderBufferedWriterFileReaderFileWirterStringInteger©ᵨḄᒹ:java,langjava,awtjava,iojava,utiljava,sqljavax.xmljavax.sevletjavax.ejb.java,netjavax.faces©ᵨḄ@ListMapDocumentNodeListEjbObjectEjbHomeSessionBeanEntityBean

1936ஹjava«¬ᙠᑁ¬¯°ᔩT²³ᓫ´µ஺«஺᝞@inti,i2;return(i-i2);஻wheni?·¸ᜧḄ§ᦪTi2?·¸ᜧḄºᦪ஺«⌼ᡂ¼½T¾¿┯À஺37ஹjava89᝱Ḅ
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2043ஹJAVA᝞Tᜐᳮᐵ¤¥throws,throw,try,catch,finallyᑖG¦⊤¨©ᙠtryᙽ./«ᔩTry:᡻ᑖCatch:ᣓᣍFinally:"#ᨵ%ᨵ&᡻Throws:ᙠ+,-.ᜐ-.⌕12Ḅ3ᵨὅ678ᐸ:ᜐᳮ஺Throw:12•=>ᙠSy@AB12=CD-.ḄEF஺GHI⌕JKLExceptionᡈExceptionḄRS45ஹᑈ®᣸>//EUV>ᦪXYZᨬ\ᡈᨬᜧḄ^ᑮ`☢ᨬ`☢ᦪḄ"bDXYpublicclassBubbleSort(privatestaticintal[]=newint[10];publicBubbleSort(){intal[]={2,3,23,45,c67,23,80,35,72}al[0]=2da2[l]=3;al[2]=23;a2[3]=45;alভ=1;al[5]=67dal[6]=23;al[7]=80dal[8]=35;al[9]=72;)publicstaticvoidmain(String[]args){BubbleSortbs=newBubbleSort()dSystem.out.printin("᣸jk:")ddisplay(al)dfor(inti=0dia2[j+l]){swapij,j+1)d

21)System.out.printIn()dSystem,out.printIn(ஹ᣸j`:,,)ddisplay(al)d)privatestaticvoiddisplay(int[]al2){for(inti=0diuvwὶᔠz⌕ᐜ|}StringBuffer,~ὶᔠp᠒஺StringBuffernopArABZt>uvwὶᔠᦔ᳛47ஹᵨjava)ṹQᑏᚮ᪘publicclassStack(int[]datadintmaxSizedinttopdpublicStack(intmaxSize){this.maxSize=maxSize;data=newint[maxSize]dtop=-1d)/***ᐭᦪ*@paramdata⌕ᐭḄᦪ*©returnᔲᡂ*/publicbooleanpush(intdata){if(top+l==maxSize){System,out.printin("᪘!H);

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2879ஹ&'¿rÄÅÆᦪÇ⌴ᑮ&'=>É=>.ᦋIÊ'¿rḄËឋ,Ì.JIᓄḄop·ʳᑮÍKÇ⌴¼ÎᵨÇ⌴§ᵨ¨⌴ª«ᦪ¬pi:®CD¯§ᵨ80ஹÏ<]ÐÑÒᢈÔCookieSessionHiddenurl°ᑏ81ஹab⚪¥ᑏ&'Singletonᩭ஺Singleton²³´⌕Hᵨµ¶ᙠJava¸ᵨ-¹º¡pClass»ᨵº¡¼ᙠ஺º½Singleton²³¾¿ᨵÀÁÁ³¯ÃºÁ³¯2Ä…¡pÆḄ᪀⌼ÉᦪÊprivateḄÆᨵº¡staticḄprivateḄËpÌÍᙠpÎÏᓄѼÒ¾Gº¡publicḄgetlnstance!\ÓÔCÆḄ§ᵨÕLÖᵨᐸ¹Ḅ!\஺publicclassSingleton{privateSingleton(){}஻ᙠ?ÛᑁÜ2Ä?Ûº¡¼0Ý᜻ßà஻áâprivate»:ᑁÜÖᵨprivatestaticSingletoninstance=newSingleton();஻ã9:º¡:᜜Üå«classḄ☟᝱!\=>èéåpublicstaticSingletongetlnstance(){returninstance;))ÃêÁ³¯publicclassSingleton{privatestaticSingletoninstance=null;publicstaticsynchronizedSingletongetlnstance(){஻¡!\ë☢ᨵᡠᦋï0ᵨðñòïóôᡂCD»úñ஻öᵨÑôᡂ¼9÷ᦔ᳛úif(instance==null)instance=newSingleton();returninstance;}

29ᐸû³¯2ĺ¡pÆḄ᪀⌼ÉᦪÊprivateḄᡠᨵ!\ÊstaticḄ஺º•½ýÊúÁ³⌕þÿᐰ83ஹJavaḄᜐᳮᑴḄÕᓫ×ᳮØᵨ஺ᳮᨵ┯ᑮᜐᳮᑖᡈᔣ஺ᵨJAVAḄ┯ᨵ!"#"$%&'ṹ)*+ᵨᣓᣍ஺#"#.᝞0throws789:;<%ᜐᳮ஺84ஹᚗᦈḄÙN×ᳮ஺Ìὃ⇋2<ᦈᑴ஺=>?@ᕒ+ᵨBᑁDjvmHIJᡂLMNO஺$%=ᐜQR?@STUVWXYZ&᎛\]^஺85ஹÜÝ&lJVMÞßclassᦻḄ×ᳮᑴJVM`aḄbcᵫClassLoaderklḄmaᩭWoḄJavaClassLoader#qr⌕ḄJava$%&tuvw஺lxyᙠ$%&{|kbᐭaᦻwḄa஺86ஹcharLIà²3²¯á&'ᦻâᡂ#q`ᦻḄjava`*unicode'ṹ#qcharᓰ16q⁚ᡠ*#q`ᦻ⚪Ḅ88ஹᑏ&'bᦻ(c:\test.txt)ã"mobnetw#Ḅåᦪ?

30javaẠaioᔠa?,Socket,AWT,Swing,sql
1ஹjava`ᨵ"aḄJDK"aḄ¡9#¢£a*¡¤¥,¦§¨©ᑖª«a⁚¬஺⁚¤¥InputstreamOutputstream,¬¤¥ReaderWriterᙠjava,ioᒹ`µᨵ¶·ᐸ¨ḄR¹º»¹¼¹½⌕09¼ឋk¿ᵨNO஺2^ÀI#q?ᵨrun஺µstart஺ÀI#q?»ᵨstart஺NTÀI?Á»ᵨrunNT஺3ஹ?ḄÂᭆÄஹ?ḄÂÅ᝱*ÇÅ᝱ÈÉḄᐵt?

31ᵨsynchoronizedÜ⛲ÙÚNT஺ê·?ᨵ!"WoNTᑖª¤¥ThreadaºWoRunnableëÙÚḄWoN☢ᨵ!"ᑖªsynchronized,waitºnotifyîï¿ᵨstop(),l+ᐰ஺lðñ◀ᵫ?óôḄᡠᨵ┝ö÷᝞0ï£ᜐ#"+øùÅ᝱úZᐸ¨?ᙠú"Å᝱ûü{kÜᦋl©஺Ö0þÿ
Ḅ⚪ᡠᙠ஺suspend஺᧕┝஺ᵨsuspend()Ḅ᎛᪗"#$%&ᩭ(ᓾ*ᯠᢝᨵᙠ./012Ḅ┝3஺4ᐸ678"#9:;<┝3Ḅ=>◀@A஻ᢞD஻Ḅ"#ឮFGH஺I78"#ᩭJ,᝞MNOPឮF᪗"#QRSTUᵨ78VW┝3Ḅ=>X$⌼ᡂ┝஺ᡠ[:\]Uᵨsuspend(),^\ᙠ_`ḄThreadefgᐭVW᪗iᢣ"#\]klmnᢞD஺o᪗iᢣ"#\]ᢞDpᵨwait஺tᐸuᐭvwx᝱஺o᪗iᢣ"#\zឮFᑣᵨVWnotify஺l"#஺5ஹæᔠ᪾éᨵCollectionMapListsetHashMapArrayList1inkedListHashSetTreeSet12ஹêh4'ëbᐸí'ëbîå¿jïÞ1,ð᜜í'ëb¿jîåòó1oᑏbpublicclassTestThread{privateintj;publicsynchronizedvoidinc()(j++System,out.printin(Thread.currentThreadO.getName0+"-inc:"+j))publicsynchronizedvoiddec()(jVSystem,out.printin(Thread.currentThreadO.getName0+"-dec:"+j)publicstaticvoidmain(String[]args)

32TestThreadt=newTestThread();for(inti=0;i<2;i++)(Threadinc=newThread(newInc(t));Threaddec=newThread(newDec(t));inc.start();dec.start();)))classIncimplementsRunnable(privateTestThreadobj;publicInc(TestThreadobj)(this.obj=obj;)publicvoidrun()(//for(inti=0;i<100;i++)//{this.obj.inc();//)))classDecimplementsRunnable(privateTestThreadobj;publicDec(TestThreadobj)(this.obj=obj;}publicvoidrun()(//for(inti=0;i<100;i++)//{this.obj.dec();//)

3313ஹÁôôᨵÁᙠõölᑖG÷ᵨø¾@(ù஺Q¡¢V£¤ṹ¦Ḅ§ᡂ&V£¨©vᑮ¢V£¤ṹ§ᡂ«¬[᡻H஺᝞¯ἠ᣸²³¡¢V£¤ṹ¦Ḅ§ᡂ&V£:¨vᑮ¢V£¤ṹ§ᡂX[᡻H஺᝞´µ〈·¸஺14ஹsleep஺wait
ᨵFG?Sleepnᢣ¹Ḩ»3Ḅ¼z.W¼½ᑮ/«"#$¾¿⏨ᩭ஺Waitnvwx᝱Âü:ÄÅᵫÇVW"#Èᐸᖔ⏨஺15ஹ&'ëbᐭ&'¿rḄ&'synchronized=>ᐸ½ëbᔲ.ᐭÉ¿rḄᐸ½=>᝞ÊᐸNnQ¡:[uᐭ஺᝞M:n[uᐭ஺17ஹûᐭûüḄᳮý¥ᙠjavaUᵨËḄµᑴuHᦪÎḄÏ〈ÐᦻÒᑮᑁÔnÕᐭËÐᑁÔᑮᦻÒnÕËÕᐭË[Ö×readØÙÕË[writeᡈprintᑏᐭIÜË[nᑖÞßàËáâàËâà[VWã⁚ᡈãåÞᓫçuHᜐᳮßàË[VᢇᦪÎÞᓫçuHᜐᳮ஺FilelnputStreamìSystem,iníîInputSteamReaderîBufferReaderOutputSteamìSystem,outíîprintStreamFileReaderîBufferedReaderFileWriterîPrintWriterᡈbufferWriterᑖeã⁚ìóuᑴíFilelnputStreamìâàÕᐭËíFileOutputStreamìâàÕËíPrintStreamìßàËíSystem,out.printinìíãåìVWcharíFileReaderFileWriter

3418ஹ²ᑏE¤Ḅ³ᑏ⌕tᵨ®-´µ¶·-¸µ¶஺importjava.io.FileWriter;importjava.io.Inputstream;importjava.io.BufferedWriter;importjava.io.InputStreamReader;importjava.io.BufferedReader;importjava.io.Fi1eReader;publicclassUntitledl{publicstaticvoidwriteFileChar0throwsException{FileWriterf=newFileWriter(zc:\\aa.txtzz);InputStreamis=System,in;intc=is.read();while(((char)c)!='x'){f.write(c);c=is.read();)f.closeO;is.close();}publicstaticvoidwriteFileString()throwsException{FileWriterf=newFileWriter(zc:\\aa.txtz/);BufferedWriterbwr=newBufferedWriter(f);BufferedReaderbf=newBufferedReader(newInputStreamReader(System,in));Stringc=bf.readLine();while(!c.equals(஻stop஻)){bwr.write(c+஻\r

35஻)c=bf.readLine();)bwr.closeO;f.close();bf.close();)publicstaticvoidreadFi1eChar()throwsException{FileReaderf=newFileReader(?c:\\aa.txtz);intc=f.read();while(c!=-l){System,out.print((char)c);

36c=f.read();)f.close();)publicstaticvoidreadFileStringOthrowsException{BufferedReaderbf=newBufferedReader(newFileReader(z/c:\\aa.txtz));Stringc=bf.readLineO;while(c!=null)(System,out.printin(c);c=bf.readLine();)bf.closeO;)publicstaticvoidmain(String[]args)throwsException{readFileStringO;})19ஹ᝞¹ᑡ©ºE
+Ḅᡠᨵᦻ½Importjava.io.File;Filef=newFile(஻C:\\஻)File[]fl=f.listFilesO;for(inti=0;i

37)publicstaticvoidgetFile(Filef,Stringsem)throwsExceptionSystem.out.println(sem+f.getName());Filefl[]=f.listFilesO;if(fl.length>=l)(for(inti=0;i〈ᦪXsÇlȯdḄᦪXpublicclassServerSocket_l(publicstaticvoidmain(String[]args)throwsException(ServerSocketss=newServerSocket(4001);Sockets=ss.accept();BufferedReaderbr=newBufferedReader(newInputStreamReader(s.getInputStream()));PrintStreamps=newPrintstream(s.getOutputStreamO);Stringtemp=br.readLine();while(true)

38System,out.printin(஻>ᡝᦻAB஻+temp);ps.println(temp);if(temp,equals("stop"))(break;)temp=br.readLine();)br.close();ps.close();ss.close();))publicclassClientSocket(publicstaticvoidmain(String[]args)throwsException{Sockets=newSocket("localhost”,4001);PrintStreamps=newPrintstream(s.getOutputStreamO);BufferedReaderbr=newBufferedReader(newInputStreamReader(System,in));BufferedReaderbr_server=newBufferedReader(newInputStreamReader(s.getInputStream()));Stringtemp=br.readLine();while(true)(ps.printin(temp);temp=br_server.readLine();System,out.printin(஻EFᘤḄIJB஻+temp);if(temp,equals(஻stop஻)){break;)temp=br.readLine();)s.closeO;br.close();brserver.close();

3923ஹghJAVA/ḄCollectionFrameWork(ᒹj᝞;ᑏklḄᦪmn᪀)4/0CollectionFrameWork᝞+0CollectionÉList|ÉLinkedListIpArrayList|LVectorILStackLSetMapÉHashtableÉHashMapLWeakHashMapCollection-ᨬËÌḄUᔠ#$ECollection)⊤GObject,ᓽCollectionḄᐗÏ(Elements)MapÐÑkeyᑮvalueḄ᧜:24ஹqrVᡠt⍝Ḅv
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40^_sqLPreparedStatement⊤a⚜cdḄSQLfgḄhi஺SQLfgj⚜cdklmnᙠPreparedStatementhiR஺ᯠqrstᵨvhiwᦔᙢz{᡻}~fgrsᦪᙠᑮPreparedStatementhi^_sql.CallableStatementᵨ᡻}SQLmnḄ஺᝞ᨵᦪ⌕ᦪ஺4ஹJavaRZ[ᦪYḄ1OracleᦪYClass.forName(''oracle,jdbc.driver.OracleDriver^^);Connectioncon=DriverManager.openConnection("6jdbc:oracle:thin:©localhost:1521:DataBase"UserName","Password")1.ᑭᵨJDBC¢£⊤RḄᦪYClass.forName("");Connectioncon=DriverManager.openConnection““)preparedStatmentps=Con.preparedStatment(uselect*from[table!”);ResultSetrs=ps.executeQuery0;While(rs.next){Rs.getString(l)ᡈrs.getString("¨©ª”))5ஹJDBCRḄ᪶¬®ᐸ°ᵨ±²DriverManagerClass.forName();DriverManager.openConnection("“Jsa",‘"')ConnectionPreparedStatement(Statement)ResultSetrs=executeQuery()dqlWhile(rs.nextO)executeUpdate()dmlddl

416ஹ᡻ᵨ᝞ᦪ()CallableStatementc=con.prepareCallC{callgetCustomerName(?,?)}z);c.setString(l,zlz);c.registerOutParameter(2,java.sql.Types.VARCHAR);c.execute();c.getString(2);8ஹ!"#$ᑏ&Jdbc'OracleḄ).Class.forName(zoracle.jdbc.driver.OracleDriverz);Connectioncon=DriverManager.getConnection(஻jdbc:oracle:thin:©localhost:1521:acc஻஻.஻஻஻ஹp,system,system);9ஹClass.forNameḄᵨ+,-⌕ᵨµ¶ᦪY·¸¹·¸º»ᑮ¼½ḄJVMR஺10ஹJdo/,-JDOJavahiᢝ¿ᓄḄÁḄÂÄjavadataobjectḄÅÆǵ¶ᵨmÈÉÊᦪYËRḄhiḄ᪗ÍᓄAPI஺JDOÎÏÐÑḄhimnÒvhÓÔÕᕒᩭmnᦪYhiØᐰÚ◤⌕Ü᜜ḄÞṹ(᝞JDBCAPIḄtᵨ)஺àáâᳲḄä}å°æçèéᑮJDOêëÎÏᖪíîtÓÔÕᕒïῃᩭñòóRôõö÷ᙠøFùúî஺û᜜JDOüᮣþÒÄÿ
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123ᦪ(ODBMS)44!567ᵨ89ឋ;஺(o/rMappingDᐹFᔠᜐᳮ)11ஹᙠORACLEᜧᦪ234Ḅᑖ⚓789:஺<ᵨ=>ID9:?ᨵ/ABCᝅ9:createorreplacepackagemyPackistypec_typeisrefcursor;proceduregetPage(v_sqlvarchar2,pageSizenumber,pageindexnumber,coutc_type);end;createorreplacepackagebodymyPack

42isproceduregetPage(v_sqlvarchar2,pageSizenumber,pageindexnumber,coutc_type)ispageTotalint:=0;pageFirstRowint:=0;pageLastRowint:=0;rowTotalint:=0;beginexecuteimmediate'selectcount(*)fromC|,v_sql,K)JintorowTotal;pageTotal:=ceil(rowTotal/pageSize);if(pagelndexpageTotal)thenraise_app1ication_error(-20001,J⚓ᦪeᜧ!b)gh')Gendif;pageFirstRow:=(pageindex-1)*pagelndex+l;pageLastRow:=pageFirstRow+pageSize;opencfor'select*from||v_sql||Jwhererownum<|pageLastRow|Jminusselect*from||v_sqlU'whererownum<I|pageFirstRow;end;end;WebjkJsp&Servletᢈm1ஹÚᓫHHtomcatḄÜÝJAVA_HOME=JDKḄ᪷opCATALINA_HOME=tomcatḄ᪷opCATALINA-HOME\conf\server.xml:
qrtomcatḄst!
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432ஹJSPEF᝱INCLUDEH☟᝱INCLUDEḄJKjsp:include:ᙠᵨ⚓☢!
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44language="java"import=<%@includefile=,,,,%><%@tagliburi=,M,prefix=?,,,%>ÃÄÅᙠscopeu᝞ÇÈᨵÉÊᓄ23!᝞ÇᨵÌxᵨ
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45WHERE(IDNOTIN(SELECTTOP⚓ᜧ**(⚓ᦪT)idFROM⊤ORDERBYid))ORDERBYID-pageSize=5⚓ᜧ*-pagelndex=2ᡠ⌕Ḅ⚓—᝞ᨵTU&VWVXUYselecttop5*fromaawherealnotin(selecttop5alfromaaorderbyal)orderbyal;oracle:select*from||v_sql||Jwhererownum<|pageLastRow|Jminusselect*from||v_sqlinwhererownum<I|pageFirstRow;Sessionᐜ#ᦪpḄᡠᨵqrstᑮ"uvwxᙠsessionpz{ᑮjsp⚓☢}᝞~ᜐᳮ஺ala2<%Listl=(List)session.getAttribute(z/asz);஻⚓intpageSize=3;஻⚓ᦪintpageCount=0;intcurrentPage=l;if(1!=null&&1.size()>0)(pageCount=(l.size()/pageSize)+(1.size()%pageSize==0?0:1);if(request.getParameter(^page^)!=null)(currentPage=Integer.parselnt(request.getParameter("page"));if(currentPage

46currentPage=l;)if(currentPage>pageCount)(currentPage=pageCount;)for(inti=(currentPage-1)*pageSize;i<(currentPage-1)*pageSize+pageSize;i++)(if(i>=l.sizeO)(break;)Aaaa=(Aa)1.get(i);%><%=aa.getAl()%><%=aa.getA2()%X/td><%%><%if(currentPage!=1)(%>  //>_l2⚓  <%)if(currentPage!=pageCount)(%>/>T■⚓  >ᨬ⚓  <%)%>

4711ஹincludeḄefgh9iḄJK<@includefile:ᙠjspᡂservlet¡ᦻ£ᙠ¤ᡂ¡java¤¥Ḅ஺ᡠV¦§¨pḄ©ª«Y¬«஺¦¡¦¡®ᵨᐵ±ᙠ¥²³᝱Ḅ®ᵨY¦§¨&Vµ©ª஺12ஹjsp⚓☢Eefjk9iᑖK/,-ᨵ,-JKz{wᶇ·¸ḄrequestactionMapping.findForWard(u,>);pageContext.forward();request.getRequestDispacher("a.jsp").forward(request,response)ºzYwᶇ·¸ḄrequestResponse.setRedirect("")13ஹlmJSPLServletḄJKஹᐳopஹᔜrsᵨḄuJspT⌕ᙠ»⚓☢Ḅ³᝱ᡂ⚓☢&V¼html᪗¾¤¿ᵨᐸÁ¦⌕ᡂ¡servletoServletT⌕¦ÃᑴḄᜐᳮ᝞®ᵨÅÆǺzYÈḄjsp⚓☢஺Mvc:Jsp:vServlet:c14ஹᙠJSPE᝞v>wᡝyḄYz᝞X{|Jspᦻ~ḄgRequest,getparameter("")<%=application.getRealPath(z/aa.jsp")%>15>lmCookieLSessionḄᵨJKLᔜrḄsᵨuSessionᳮ஺Cookie:T⌕ᵨᙠwxÉᡝËᐸᙠÉᡝ˼ÌÆËÍÎÏ〈YÑᐰxÓḄᦪªᨵ▲஺Session:wxᙠÌÆË¡sessionᙠÌÆËᨵ^sessionlDÕ¡᪗Ö஺xÓḄᦪªᜧÑᐰឋØ஺ᓰᵨÌÆËḄᑁxÛÜ஺

4816ஹaJspEerrorPageḄᵨsᵨu஺ÝÞ⚓☢p%@pageerropage=,,error.jsp“%┯á⚓☢<%@pageiserrorpage=,,true,,%>ᨵᑁâ"u:exception17ஹᙠJspE᝞ᵨJavaBeans<%New();%>19ஹᓫJSPḄ᪗}¡᪗¾ᜐᳮextendsTagSupportäåtldæç᪗¾ᜐᳮḄḄèXèᙠweb.xmlpæçtldᦻ£ᙠjsp⚓☢¦éᵨtld<%@tagliburiê"“prefixê""ë>20ஹServletEḄ᪶ᨵᔜᨵ,-ᱯpServletContextìᘤîâᐰ頻setAtributeOgetAttribute()ServletConfig¡servletḄðâge11nitParameter(,?«ñ)HttpServletRequeststḄᡠᨵḄgetParameterValue(w«ñ)getParameterValues(nñ")getSession();getAttribute(v«ñ);getRequestDispatchC9a.jsp")forward(request,response)HttpServletResponseôõgetOut();sendRedirectHttpSession¡ᵨᡝ¡⚓☢ᐳ÷È©ª

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73create■■->ejbcreateᐭ~ᦪejbActivateejbPassivatenoremove—>ejbRemoveᦪḄᦪ12ஹEJB◤ñògh¦ḄóÞòôᡈHomeòôᔩYmᳮᵫ஺lVHomeB◤⌕Ḅ0ṹ\ᵫhᘤi9ḄV5]a6Zᵨhgi9Ḅd஺13ஹEJBḄ÷øùᑴ-StatefulSessionBeand:ᐸCacheᜧ£¤¥ᑁm],-T{mᙠḄBeandḄᦪ§᪷MRUᡈNRU@dᙠnoᢞw®᝱°A±²஺no:uᦻ´ᑮᑁmZᵨejbActivate?@ᢞwuᑁmᑮᦻ´ZᵨejbPassivate?@14ஹEJB/Ó¶ÑᢈüghḄaSessionBeanLEntityBeanḄJKEJBᒹ½SessionBeanஹEntityBeanஹMessageDrivenBean,ÂÃJNDIஹRMI>JTAÇᢈÉ.SessionBeanᙠJ2EE"ᵨV]ÌᵨᩭÎᡂÏhᘤgḄÐÑ஺d᝞ÒÓᦪஹZᵨᐸEJBÔ´.EntityBeanÌᵨᩭ0⊤"ᵨ$Õ]ᵨᑮḄᦪ.!ÃeᡝYSessionBean\Ö×ᢝGឋ!ØÙÚÏᙠhᘤÛ5ḄÜÝÞEntityBean\ᑭᢝGឋ!ØÙ0⊤màᙠᢝGឋmàᘤ]ḄáḄ!Øâãᡈ\ᵫᨵå"ᵨVḄá.SessionBeanæ,-çèᑖStatefulSessionBeanStatelessSessionBean.êÖḄSessionBeanë,-q$ÕÜÝìᙠmethod°]᡻5BTḄ\StatefulSessionBean,-îïðñὅḄ®᝱óôaõᩭöᵨὅ_ᨵ:!"ḄStatefulSessionBeanḄá.StatelessSessionBean÷ᯠù\ÜÝÔ´ú\ᓾBüýîïöᵨὅ®᝱ùn\þöᵨὅðñStatelessSessionBeanḄ{᎛EJBContainerᱯḄ

74StatelessSessionBeanḄᩭ᡻method.ᣚ!ᦪ#ᵨὅᙠ᡻'StatelessSessionBeanḄmethods()*+BeanḄInstanceᙠ᡻.-ᑁ/0☢ᩭ2StatefulSessionBean3StatelessSessionBean45StatefulSessionBean6ὑJ2EEServer58Ḅᑁ/ᯠ:StatefulSessionBeanḄ;<ᓾᙠ>?@Aᢝ#ᵨὅḄC᝱.15ஹEJBḄᑖ/,-ᔜᨵ,-ᱯpsessionBean:EFGH6ᜫStateless:JKStateFull:+ᵨᡝ8MNJKEntityBean:ᢝOḄᦪPQRCmp`SᘤUV஺/YmappingZᦪPḄᢝOᓄᑏsql,Z0]ᙠ^_᠒஺Bmp:UVjdbcZᢝOᓄZaᩖ^_cmessageBean`defgᜐᳮ஺10ஹEJBE⌕Ḅ£¤ᦻ~`ᵨ/,-EJBjk(◤⌕nᦻpqEjb-jar.xml:rstu+vᡭᒹᙠ+HyEJB+z{஺|}~ḄsessionBeanḄ)ᵫSᘤᜐᳮḄ஺ᐸᙠᡠᨵḄᘤ)UᵨḄ஺Weblogic-ejb-jar.xml`r+EJBz{+JNDI,ᙠweblogicᘤWeblogic-rdbms-jar.xml`Zo/rmappingḄ|},~>*.hbm.xml15ஹaᦪ2'òýḄùᑴ/,-SᘤᡈᐵḄᵨᙠᐸRᓄ8t~ᵨᙠ#ᵨ(SᘤtrRḄtᵨt#ᵨ*(~ᵨ#ᵨSᘤ@rtᦈ஺-:dḄᦔ᳛஺16ஹEJB2.0ᨵÑᑁæᑖKᵨᙠ,-ÿᔠ
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7621ஹEJBööEJBRἭùḄMNᨵúû±1.!MNýÜýAPIAPIᢣḄ᝞notify,wait2.awt,3."#$%ᘤ'4.☟᝱+,-.5.0ᵨ1045-.ᦻ7896.;<=ᙢ?.7.AthisDEFGHI8.KLMᵨ஺26ஹEJBḄP=Q᪀S:UVEJBᒹ[\V]ᑖ_RemoteInterface5eḄfṹpackageBeans;importjavax.ejb.EJBObject;importjava.rmi.RemoteException;publicinterfaceAddextendsEJBObject{//somemethoddeclareHomeInterface5eḄfṹpackageBeans;importjava.rmi.RemoteException;importjaax.ejb.CreateException;importjavax.ejb.EJBHome;publicinterfaceAddHomeextendsEJBHome

77//somemethoddeclare)EJByḄfṹpackageBeans;importjava.rmi.RemoteException;importjavax.ejb.SessionBean;importjavx.ejb.SessionContext;publicclassAddBeanImplementsSessionBean(//somemethoddeclare)30ஹ᝞ᙠweblogicsslᡝḄᡈj2ee(᪗)sslḄ|ḕ~0ᵨDemoIdentity,jksGDemoTrust,jksKeyStore"#SSL,◤⌕$%ᘤ0ᵨEnableSSL,ᐸeᙠ◤⌕CA.ᨵGᦪidentityGtrustkeystore,<ḄGᦪ஺SSL¡5¢ᓫᔣ¥¢¦ᔣḄ஺31᝞ᙠweblogic!ḄEJB?0ᵨ§ᳮ©ᑴ«ᙠ¬ḄDeployment®ᡠᨵ°±²ḄE³

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83xmlwriter();publicstaticvoidxmlparser()throwsException(DocumentBuilderFactoryxdf=DocumentBuilderFactory.newInstance();DocumentBuilderdb=xdf.newDocumentBuilder();Documentd=db.parse(,'C:\\Al\\customer.xmr,);NodeListnl=d.getElementsByTagName("customer");for(inti=0;i

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