Video: Dab tsi yog qhov kawg static variable hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Qhov kawg static variable hauv Java . Tshaj tawm sib txawv tib as zoo li qub tuaj yeem ua rau muaj kev hloov pauv hauv lawv cov txiaj ntsig los ntawm ib lossis ntau qhov piv txwv ntawm cov chav kawm uas nws tau tshaj tawm. Tshaj tawm lawv li static kawg yuav pab koj tsim ib tug CONSTANT. Tsuas yog ib daim qauv ntawm sib txawv muaj uas tsis tuaj yeem rov pib dua.
Ib yam li ntawd, qhov kawg hloov pauv hauv Java yog dab tsi?
kawg lo lus tseem ceeb hauv java ua . Ua ntej tshaj plaws, kawg yog ib qho kev hloov kho uas tsis siv tau tsuas yog siv rau a sib txawv , ib txoj kev los yog ib chav kawm. Hauv qab no yog cov ntsiab lus sib txawv qhov twg kawg yog siv. Qhov kawg hloov pauv . Thaum a sib txawv tau tshaj tawm nrog kawg lo lus tseem ceeb, nws tus nqi tsis tuaj yeem hloov kho, qhov tseem ceeb, qhov tsis tu ncua.
Dab tsi yog qhov kev siv static kawg hauv Java? Nws yeej txhais tau tias yog koj hloov nws rau ib yam khoom nws yuav raug hloov rau tag nrho ib yam li lub ntiaj teb no kuj sib txawv (tso los ntawm scope). Vam tias nws yuav pab tau. kawg qhia tias tus nqi tsis tuaj yeem hloov pauv ib zaug. zoo li qub tso cai rau koj los teeb tsa tus nqi, thiab tus nqi ntawd yuav zoo ib yam rau txhua qhov piv txwv ntawm chav kawm uas siv nws.
Hais txog qhov no, dab tsi yog qhov sib txawv ntawm Java?
Static variable hauv Java yog sib txawv uas belongs rau chav kawm thiab pib tsuas yog ib zaug thaum pib ntawm kev tua. Nws yog ib sib txawv uas belongs rau cov chav kawm thiab tsis tawm tsam (piv txwv) Static variables yog pib ib zaug xwb, thaum pib ntawm kev tua.
Dab tsi yog qhov txawv ntawm qhov zoo li qub thiab qhov kawg hloov pauv?
zoo li qub txhais tau tias tsuas muaj ib daim qauv ntawm tus sib txawv nyob rau hauv lub cim xeeb qhia los ntawm tag nrho cov piv txwv ntawm cov chav kawm ntawv. Cov kawg lo lus tseem ceeb tsuas yog txhais tau tias tus nqi hloov tsis tau. Tsis muaj kawg , txhua yam khoom tuaj yeem hloov tus nqi ntawm qhov sib txawv.
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