Video: Static class txhais li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib C# static class yog ib hoob uas ua tsis tau instantiated. Lub hom phiaj nkaus xwb chav kawm yog muab daim ntawv qhia txog nws cov qub txeeg qub teg chav kawm . A chav kawm zoo li qub yog tsim los siv cov " zoo li qub " lo lus tseem ceeb hauv C# A chav kawm zoo li qub tuaj yeem muaj zoo li qub cov tswv cuab nkaus xwb. Koj tsis tuaj yeem tsim ib qho khoom rau qhov chav kawm zoo li qub.
Ib yam li ntawd ib tug yuav nug, dab tsi yog kev siv cov chav kawm zoo li qub?
Cov chav kawm zoo li qub yog siv los ua ntim rau zoo li qub cov tswv cuab. Static txoj kev thiab zoo li qub cov khoom yog cov tswv cuab feem ntau siv ntawm a chav kawm zoo li qub . Tag nrho zoo li qub cov tswv cuab raug hu ncaj qha siv cov chav kawm npe. Static txoj kev ua ib txoj haujlwm tshwj xeeb thiab raug hu ncaj qha siv hom npe, tsis yog piv txwv ntawm hom.
Ib tug kuj tseem nug, thaum twg yuav tsum muaj chav kawm zoo li qub? Qhov zoo ntawm kev siv a chav kawm zoo li qub yog tias lub compiler tuaj yeem tshawb xyuas kom paub tseeb tias tsis muaj cov tswv cuab hauv qhov xwm txheej ntxiv. Lub compiler yuav lav tias qhov xwm txheej ntawm qhov no chav kawm tsim tsis tau. Cov chav kawm zoo li qub raug kaw thiab yog li tsis tuaj yeem tau txais qub txeeg qub teg. Lawv tsis tuaj yeem tau txais txiaj ntsig los ntawm ib qho twg chav kawm tsuas yog Object.
Ntxiv mus, peb puas tuaj yeem ua cov chav kawm zoo li qub?
Cov lus teb yog YOG, peb ua tau muaj chav kawm zoo li qub hauv java. Hauv java, peb muaj zoo li qub piv txwv variables thiab zoo li qub txoj kev thiab zoo li qub thaiv. Cov chav kawm uas enclosed nested chav kawm yog lub npe hu ua Outer chav kawm . Hauv java, peb ua tau 't ua Qib saum toj kawg nkaus chav kawm zoo li qub.
Dab tsi yog qhov txawv ntawm chav kawm zoo li qub thiab chav kawm tsis zoo li qub hauv C #?
Qhov sib txawv ntawm static thiab tsis yog - chav kawm zoo li qub Hauv chav kawm zoo li qub , koj tsis raug tso cai los tsim cov khoom. Hauv tsis yog - chav kawm zoo li qub , koj raug tso cai los tsim cov khoom siv lo lus tshiab. Cov ntaub ntawv cov tswv cuab ntawm chav kawm zoo li qub tuaj yeem nkag ncaj qha los ntawm nws chav kawm npe.
Pom zoo:
Kuv yuav tsim cov ntaub ntawv a.class li cas?
Txhawm rau tsim cov chav kawm Java tshiab lossis hom, ua raws li cov kauj ruam no: Hauv qhov project qhov rais, right-click a Java file lossis folder, thiab xaiv Tshiab> Java Class. Xwb, xaiv cov ntaub ntawv Java lossis cov ntawv tais ceev tseg hauv qhov project qhov rai, lossis nyem rau hauv Java cov ntaub ntawv hauv Code Editor. Tom qab ntawd xaiv Cov Ntaub Ntawv> Tshiab> Java Class
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Dab tsi yog static class C#?
Chav kawm C# static yog ib chav kawm uas tsis tuaj yeem ua tau sai. Lub hom phiaj ib leeg ntawm cov chav kawm yog los muab cov qauv ntawm nws cov chav kawm qub txeeg qub teg. Cov chav kawm zoo li qub yog tsim los siv 'static' lo lus tseem ceeb hauv C#. Ib chav kawm zoo li qub tuaj yeem muaj cov tswv cuab zoo li qub xwb. Koj tsis tuaj yeem tsim ib qho khoom rau chav kawm zoo li qub
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