Video: Dab tsi yog hom ntaub ntawv tseem ceeb hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hom thawj yog qhov yooj yim tshaj plaws hom ntaub ntawv muaj nyob rau hauv Java lus. Muaj 8: boolean, byte, char, luv, int, ntev, ntab thiab ob npaug. Cov no hom ua lub tsev blocks ntawm cov ntaub ntawv manipulation hauv Java . Koj tsis tuaj yeem txhais cov haujlwm tshiab rau qhov ntawd hom thawj zaug.
Tsuas yog li ntawd, lub ntsiab lus ntawm cov ntaub ntawv tseem ceeb hauv Java yog dab tsi?
Ib ' keeb kwm ' hom ntaub ntawv txhais tau tias tias koj muaj tus nqi khaws cia hauv nco--tus nqi no tsis muaj txoj hauv kev lossis cov qauv sab hauv. A keeb kwm tuaj yeem ua haujlwm tsuas yog los ntawm kev ua haujlwm sab nraud. Hauv Java , keeb kwm yog cov lej (int, ntev, thiab lwm yam) thiab char.
Ib sab saum toj no, lub ntsiab lus ntawm cov ntaub ntawv tseem ceeb yog dab tsi? Primitive data yam tau txhais ua ntej hom ntawm cov ntaub ntawv , uas tau txais kev txhawb los ntawm cov lus programming. Piv txwv li, integer, cim, thiab hlua yog tag nrho hom ntaub ntawv qub . Cov programmer tuaj yeem siv cov no hom ntaub ntawv thaum tsim cov variables hauv lawv cov kev pab cuam.
Kuj paub, dab tsi yog cov ntaub ntawv qub thiab tsis yog cov ntaub ntawv hauv Java?
Hauv Java , tsis yog - keeb kwm los yog siv hom ntaub ntawv , tsis zoo li hom ntaub ntawv qub , uas suav nrog byte, int, ntev, luv, ntab, ob npaug, thiab char, tsis txhob khaws cov nqi, tab sis chaw nyob lossis cov ntaub ntawv xa mus. Yog li ntawd, lawv siv tsuas yog qhov chaw nyob hauv lub cim xeeb tsis yog qhov tseem ceeb.
Puas yog txoj hlua yog hom ntaub ntawv tseem ceeb hauv Java?
A Txoj hlua hauv Java yog qhov tseeb tsis yog hom ntaub ntawv qub , vim nws hais txog ib yam khoom. Cov Txoj hlua cov khoom muaj txoj hauv kev uas siv los ua qee yam haujlwm ntawm hlua.
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Dab tsi yog tus hais lus sau nws lub hom phiaj thiab dab tsi yog yam tseem ceeb uas yuav tsum nco ntsoov txog cov lus hais?
Cov neeg hais lus sau ntawv yog cov ntawv qhia uas tus neeg nthuav qhia siv thaum nthuav qhia qhov kev nthuav qhia. Lawv pab tus neeg nthuav qhia nco txog cov ntsiab lus tseem ceeb thaum muab kev nthuav qhia. Lawv tshwm sim ntawm tus swb thiab tuaj yeem pom tsuas yog los ntawm tus tshaj tawm thiab tsis yog cov neeg tuaj saib