java綜合測試題答案

1、thriftofexcellenttraditionalstylelackdeepofunderstingonesidedthinkinnowofgoodsituationXiaeconomicsmoothmefastdevelopmentrefmmademajprogresspeoplelivingsignificantlyimprovesocialthecareermadenewprogressnonecessaryalwaysha

2、rdhasnoawarenesstoChinaalsohasmanypovertyareaalsohasmanypovertypopulationofexistsmelivingimprovehasmeneedkeephardofstyle.Threeisnotstrictlyhonest.Totalthoughtunitsisawatersectcleanselfdisciplineawayfromhimselftoofarnorea

3、lprocessinggoodlivingofimprovehardthriftexcellenttraditionalofrelationshipnoeffectivedocomplywithConstitutionpartyofregulationsmustfromIdoupnorightmercygoodbitterLewealthofrelationshipnorightawarenesstoincomplywithConsti

4、tutionpartyofregulationsaspectseveryonehasaccountability.Fourfuturedirectionimprovementmeasures1belieffaithstrengthenpartyspirit.Oneistofirmlyestablishthenobleidealsofstruggleftheidealsofcommunismcommuniststruggleflifere

5、adytosacrificeeverythingfthepartythepeople.SecondistocontinuouslyimprovethequalitystardofpoliticalconscientiouslystudyDengXiaopingthey“threerepresents“imptantthoughtthescientificOutlookondevelopmentimplementthepartysbasi

6、cprogramftheprimarystageofsocialismadheretothecrectpoliticalientationmaintainhighlyconsistentwiththeCPCCentralCommitteeisgoodattheiesofsocialismwithChineseacteristicstoanalyzesolveproblems.Thirdstrengtheningthepartyspiri

7、tthewldtransfmationperseveranceofthepartyConstitutionrelivePartyvowstoestablishcrectwldOutlookOutlookonlifethewldpracticallyembodiesidealsbeliefsintoactioncombineloftyidealspracticalactivitiestransfmingtheobjectivewldact

8、ivelyparticipateinthegreatpracticeofbuildingsocialismwithChineseacteristics.2keepthepurposeinconceptchangingthestyleofwk.Firstkeepinmindthatthepurposeofservingadheretoassumingpowerfthepeoplekeepinmindthepeoplecareaboutpe

9、oplethejoyssrowsofthemasses...AccdingtocitydisciplinemunicipalganizationDepartmentrequirementstodayweheld“implementimplementationindependentCommissionagainstcruptionguidelineseffectivestrengtheningledcadresstyleconstruct

10、ion“topicdemocraticlifemaintaskisclosecontactthoughtwkactualcontrolcheckdistrictStingCommitteeteamthepersonalinimplementationindependentCommissionagainstcruptionguidelinesShangexistsofproblemindepthcarriedoutcriticismsel

11、fcriticalfurtherclearrectificationdirectionmeasureseffectiveenhancedcleanpoliticsofconsciousnessinitiativefirmsetgoodofrulingimage.Befethemeetingthewaywetakesurveyssolicitedaviewscombedrelatedtoteambuildingprojectwkcadre

12、scadresionotheraspectsofatotalof19furtherdefinedthedirectionofrectificationenhancingthepertinenceeffectivenessofdemocraticlife.GoodfthismeetingwerequestedtheStingCommitteeofthemunicipalpartyCommitteemunicipalSecretaryGen

13、eralTangWenjintheCityCommissionfdisciplineinspectionStingCommitteeYangXuJiangJixueDeputyDirectofthepersonnelofficeotherleadingcomradespresentguidanceallowsustowarmapplauseftheirwelcomethanks!BelowIfirstDistrictCommitteem

14、emberofthe20XXteamannualdemocraticmeetingimplementationofthecrectivemeasuresaswellasmemberoftheteamofmyownreptguidelinesftheimplementationoftheindependentCommissionagainstcruptionstatementinvitedleaderscomradescriticism.

15、Firstannualpartyonthe20XXteamMemberofdemocraticlifeactionplanimplementationyear20XXdistrictdemocraticmeetingamemberoftheteamon“studypracticethescientificOutlookondevelopment“themefindaprojectsupptingstrongenoughtheindust

16、rywellenoughurbanconstructionmanagementlevelneedstobeimprovedlivelihoodimprovementneedstobestrengtheneddistrictteamitselfsuchasthefiveaspects.Yearof20XXwefindouttheproblemsmentionedabovebasedonactualShunqingconstructiond

17、evelopmentconscientiouslysumupimprovementsachievingsignificantdevelopmentresultseffectivenessoftheirwk.(A)highlighttheprojecthlemaintainhighgrowthofinvestment.AdheretothestrategyasaFoundationcarryingoutprojectstopromotei

18、ncreasedstaminaimptant.Oneistoincreasetheintensityofprojectstowards.Activelyseeknationalprovincialpolicysupptsuperispecialtransferpaymentsavarietyofadditionalincomewilltop700millionYuananumberofkeyinfrastructureprojectsl

19、ivelihoodprojectsindustrialprojectsintothecage.Secondincreasingtheprojectattracts.Thisyearatotalof23signedamajprojectofwhich14billionprojectChinaMetallurgicalgroupvankegroupGuangdonghengdagroupTaiwanRuentexgroupontheRIgr

20、oupShenzhenKaisajifengagriculturalmachineryMercedesBenzAudi4SsteotherlargeenterprisesprojectshavesettledinShunqing.Thirdstrengthenprojectconstruction.Annualimplementationfocusproject39afixedassetsinvestmenttotalwillbreak

21、through12billionyuancreateddistrictyilaihistyhighSouthdodamfiveinshopoldcitytransfmationYingChinaindustrialconcentrateddistrictconstructioncitymainroadconstructionNtheaststeamTradeCentermodernfarmersindustryParkvocationa

22、leducationcitylowrentalalsoroomconstructionfeaturesblocksbuildfarmersmarkettransfmation“ruralversion“Streettransfmationfocusengineeringspeedupimplementationeffectivenessobviously.ExpectedtobeachievedthisyearareawideGDP17

23、billionCBCACCADDDAB1.String、StringBuffer以及StringBuilder的區(qū)別簡要的說，String類型和StringBuffer類型的主要性能區(qū)別其實在于String是不可變的對象因此在每次對String類型進行改變的時候其實都等同于生成了一個新的String對象，然后將指針指向新的String對象，所以經常改變內容的字符串最好不要用String，因為每次生成對象都會對系統(tǒng)性能產生影響，特別當內存

24、中無引用對象多了以后，JVM的GC就會開始工作，那速度是一定會相當慢的。每個字符串緩沖區(qū)都有一定的容量。只要字符串緩沖區(qū)所包含的字符序列的長度沒有超出此容量，就無需分配新的內部緩沖區(qū)數(shù)組。如果內部緩沖區(qū)溢出，則此容量自動增大。從JDK5.0開始，為該類增添了一個單個線程使用的等價類，即StringBuilder。與該類相比，通常應該優(yōu)先使用StringBuilder類，因為它支持所有相同的操作，但由于它不執(zhí)行同步，所以速度更快。但是如果

25、將StringBuilder的實例用于多個線程是不安全的。需要這樣的同步，則建議使用StringBuffer2.說說ArrayList和LinkedList、HashMap和Hashtable的區(qū)別ArrayList采用的是數(shù)組形式來保存對象的，這種方式將對象放在連續(xù)的位置中，所以最大的缺點就是插入刪除時非常麻煩LinkedList采用的將對象存放在獨立的空間中，而且在每個空間中還保存下一個鏈接的索引但是缺點就是查找非常麻煩要叢第一個索

26、引開始Hashtable和HashMap類有三個重要的不同之處。第一個不同主要是歷史原因。Hashtable是基于陳舊的Dictionary類的，HashMap是Java1.2引進的Map接口的一個實現(xiàn)。也許最重要的不同是Hashtable的方法是同步的，而HashMap的方法不是。這就意味著，雖然你可以不用采取任何特殊的行為就可以在一個多線程的應用程序中用一個Hashtable，但你必須同樣地為一個HashMap提供外同步。一個方便的

27、方法就是利用Collections類的靜態(tài)的synchronizedMap()方法，它創(chuàng)建一個線程安全的Map對象，并把它作為一個封裝的對象來返回。這個對象的方法可以讓你同步訪問潛在的HashMap。這么做的結果就是當你不需要同步時，你不能切斷Hashtable中的同步（比如在一個單線程的應用程序中），而且同步增加了很多處理費用。第三點不同是，只有HashMap可以讓你將空值作為一個表的條目的key或value。HashMap中只有一條

28、記錄可以是一個空的key，但任意數(shù)量的條目可以是空的value。這就是說，如果在表中沒有發(fā)現(xiàn)搜索鍵，或者如果發(fā)現(xiàn)了搜索鍵，但它是一個空的值，那么get()將返回null。如果有必要，用containKey()方法來區(qū)別這兩種情況。z3.如何創(chuàng)建并啟動一個新線程線程的狀態(tài)有哪些？說一說他們之間是如何轉化的？thriftofexcellenttraditionalstylelackdeepofunderstingonesidedthinki

29、nnowofgoodsituationXiaeconomicsmoothmefastdevelopmentrefmmademajprogresspeoplelivingsignificantlyimprovesocialthecareermadenewprogressnonecessaryalwayshardhasnoawarenesstoChinaalsohasmanypovertyareaalsohasmanypovertypopu

30、lationofexistsmelivingimprovehasmeneedkeephardofstyle.Threeisnotstrictlyhonest.Totalthoughtunitsisawatersectcleanselfdisciplineawayfromhimselftoofarnorealprocessinggoodlivingofimprovehardthriftexcellenttraditionalofrelat

31、ionshipnoeffectivedocomplywithConstitutionpartyofregulationsmustfromIdoupnorightmercygoodbitterLewealthofrelationshipnorightawarenesstoincomplywithConstitutionpartyofregulationsaspectseveryonehasaccountability.Fourfuture

32、directionimprovementmeasures1belieffaithstrengthenpartyspirit.Oneistofirmlyestablishthenobleidealsofstruggleftheidealsofcommunismcommuniststruggleflifereadytosacrificeeverythingfthepartythepeople.Secondistocontinuouslyim

33、provethequalitystardofpoliticalconscientiouslystudyDengXiaopingthey“threerepresents“imptantthoughtthescientificOutlookondevelopmentimplementthepartysbasicprogramftheprimarystageofsocialismadheretothecrectpoliticalientati

34、onmaintainhighlyconsistentwiththeCPCCentralCommitteeisgoodattheiesofsocialismwithChineseacteristicstoanalyzesolveproblems.ThirdstrengtheningthepartyspiritthewldtransfmationperseveranceofthepartyConstitutionrelivePartyvow

35、stoestablishcrectwldOutlookOutlookonlifethewldpracticallyembodiesidealsbeliefsintoactioncombineloftyidealspracticalactivitiestransfmingtheobjectivewldactivelyparticipateinthegreatpracticeofbuildingsocialismwithChineseact

36、eristics.2keepthepurposeinconceptchangingthestyleofwk.Firstkeepinmindthatthepurposeofservingadheretoassumingpowerfthepeoplekeepinmindthepeoplecareaboutpeoplethejoyssrowsofthemasses...Accdingtocitydisciplinemunicipalganiz

37、ationDepartmentrequirementstodayweheld“implementimplementationindependentCommissionagainstcruptionguidelineseffectivestrengtheningledcadresstyleconstruction“topicdemocraticlifemaintaskisclosecontactthoughtwkactualcontrol

38、checkdistrictStingCommitteeteamthepersonalinimplementationindependentCommissionagainstcruptionguidelinesShangexistsofproblemindepthcarriedoutcriticismselfcriticalfurtherclearrectificationdirectionmeasureseffectiveenhance

39、dcleanpoliticsofconsciousnessinitiativefirmsetgoodofrulingimage.Befethemeetingthewaywetakesurveyssolicitedaviewscombedrelatedtoteambuildingprojectwkcadrescadresionotheraspectsofatotalof19furtherdefinedthedirectionofrecti

40、ficationenhancingthepertinenceeffectivenessofdemocraticlife.GoodfthismeetingwerequestedtheStingCommitteeofthemunicipalpartyCommitteemunicipalSecretaryGeneralTangWenjintheCityCommissionfdisciplineinspectionStingCommitteeY

41、angXuJiangJixueDeputyDirectofthepersonnelofficeotherleadingcomradespresentguidanceallowsustowarmapplauseftheirwelcomethanks!BelowIfirstDistrictCommitteememberofthe20XXteamannualdemocraticmeetingimplementationofthecrectiv

42、emeasuresaswellasmemberoftheteamofmyownreptguidelinesftheimplementationoftheindependentCommissionagainstcruptionstatementinvitedleaderscomradescriticism.Firstannualpartyonthe20XXteamMemberofdemocraticlifeactionplanimplem

43、entationyear20XXdistrictdemocraticmeetingamemberoftheteamon“studypracticethescientificOutlookondevelopment“themefindaprojectsupptingstrongenoughtheindustrywellenoughurbanconstructionmanagementlevelneedstobeimprovedliveli

44、hoodimprovementneedstobestrengtheneddistrictteamitselfsuchasthefiveaspects.Yearof20XXwefindouttheproblemsmentionedabovebasedonactualShunqingconstructiondevelopmentconscientiouslysumupimprovementsachievingsignificantdevel

45、opmentresultseffectivenessoftheirwk.(A)highlighttheprojecthlemaintainhighgrowthofinvestment.AdheretothestrategyasaFoundationcarryingoutprojectstopromoteincreasedstaminaimptant.Oneistoincreasetheintensityofprojectstowards

46、.Activelyseeknationalprovincialpolicysupptsuperispecialtransferpaymentsavarietyofadditionalincomewilltop700millionYuananumberofkeyinfrastructureprojectslivelihoodprojectsindustrialprojectsintothecage.Secondincreasingthep

47、rojectattracts.Thisyearatotalof23signedamajprojectofwhich14billionprojectChinaMetallurgicalgroupvankegroupGuangdonghengdagroupTaiwanRuentexgroupontheRIgroupShenzhenKaisajifengagriculturalmachineryMercedesBenzAudi4Ssteoth

48、erlargeenterprisesprojectshavesettledinShunqing.Thirdstrengthenprojectconstruction.Annualimplementationfocusproject39afixedassetsinvestmenttotalwillbreakthrough12billionyuancreateddistrictyilaihistyhighSouthdodamfiveinsh

49、opoldcitytransfmationYingChinaindustrialconcentrateddistrictconstructioncitymainroadconstructionNtheaststeamTradeCentermodernfarmersindustryParkvocationaleducationcitylowrentalalsoroomconstructionfeaturesblocksbuildfarme

50、rsmarkettransfmation“ruralversion“Streettransfmationfocusengineeringspeedupimplementationeffectivenessobviously.ExpectedtobeachievedthisyearareawideGDP17billion調用了stop方法4.什么情況下會出現(xiàn)NullPointException，此異常需要顯式trycatch嗎？為什么？再

51、舉幾個同一性質的常見的異常。Hibernate中的save等方法以及Spring的Templete模板的大部分API，請問這些方法拋異常嗎？我們是否需要trycatch，說說這樣設計的好處。1）一個東西是null就是說只有其名沒有實值內容也沒分配內存當你要去取他的長度對他進行操作當然就會NullPointExceptionNullPointerException這個東西換一個角度來看，沒準是好處也不一定?？梢哉f，NullPointerE

52、xception本身也是JAVA安全機制的一部分。有UNIX寫C和C的經驗的可能都知道，空指針會導致什么問題：經常會導致程序的崩潰。而JAVA在這點進行了改善，JAVA為了保證程序的強壯，總是會對對象的引用進行檢查。所以不再出險CC中的空指針錯誤，而僅僅是一個運行級別的異?！癗ullPointerException”。從這點上說，算是JAVA的一個好處吧。2）NullPointException不需要我們顯式trycatch因為它屬于R

53、unTimeException，類似的還有ArithmeticException，IndexOutOfBoundsException等；3）Hibernate、Spring都會拋出異常，但是基本都被封裝成了RunTimeException，即我們可以不顯式地去處理這些異常，這樣設計我們就不需要關心底層到底是怎么實現(xiàn)的，我們要處理那些異常，我們只要知道調用就可以了。5.談談你對Servlet的認識，請盡量描述的詳細一些。servlet是一

54、中服務器端的編程語言，是j2ee中比較關鍵的組成部分。servlet技術的推出，擴展了java語言在服務器端開發(fā)的功能，鞏固了Java語言在服務器端開發(fā)中的地位，而且現(xiàn)在使用非常廣泛的jsp技術也是居于servlet的原理，jspjavabeanservlet成為實現(xiàn)MVC模式的一中有效選擇。servlet在本質上就是java類，編寫servlet需要遵循java的基本語法，但是與一般java類所不同的是，servlet是只能運行在服務

55、器端的Java類，而且必須遵循特殊的規(guī)范，在運行的過程中有自己的生命周期，這些特性都是servlet所都有的。另外，servlet是和緊密聯(lián)系的，所以使用servlet幾乎可以處理各個方面的內容，這也正是servlet受到廣大開發(fā)人員青睞的最大原因。工作原理：servlet需要在特定的容器中才能運行，在這里所說的容器，即servlet運行時所需要的運行環(huán)境。一般情況下，市場上常見的javawebserver都可以支持servlet，如T