Cov txheej txheem:
Video: Dab tsi yog hom ntaub ntawv hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Muaj ob hom ntaub ntawv hom hauv Java:
- Primitive data types: Cov ntaub ntawv tseem ceeb muaj xws li boolean char, byte, luv, int , ntev, ntab thiab ob npaug.
- Cov ntaub ntawv tsis yog cov ntaub ntawv tseem ceeb: Cov ntaub ntawv tsis yog cov ntaub ntawv tseem ceeb suav nrog Cov Chav Kawm, Interfaces, thiab Arrays.
Ua raws li qhov xav tau, hom ntaub ntawv hauv Java piav qhia yog dab tsi?
Hom ntaub ntawv qhia qhov loj thiab hom ofvalues uas tuaj yeem khaws cia rau hauv tus cim. Cov Java lus yog nplua nuj nyob rau hauv nws hom ntaub ntawv . Cov ntaub ntawv hom hauv Java raug cais ua ob hom : Primitive-uas suav nrog Integer, Cim, Boolean, thiab Floating Point. Non-primitive-uas suav nrog Chav Kawm, Interfaces, thiab Arrays.
Ib yam li ntawd, dab tsi yog qhov sib txawv thiab cov ntaub ntawv hom? Variables thiab Hom
- byte (ntau, 1 byte)
- luv (ntau, 2 bytes)
- int (tus lej, 4 bytes)
- ntev (tus lej, 8 bytes)
- ntab (float tooj, 4 bytes)
- ob npaug (ntim tus lej, 8 bytes)
- char (ib tug cim, 2 bytes)
- boolean (qhov tseeb lossis tsis tseeb, 1 byte)
Ntxiv mus, koj txhais li cas los ntawm cov ntaub ntawv hom?
Hauv computer science thiab computer programming, a hom ntaub ntawv los yog yooj yim hom yog tus cwj pwm ntawm cov ntaub ntawv uas qhia lub compiler lossis tus neeg txhais lus li cas tus programmer npaj siab yuav siv cov ntaub ntawv . Qhov no hom ntaub ntawv txhais cov haujlwm uas tuaj yeem ua tiav ntawm qhov cov ntaub ntawv , lub ntsiab lus ntawm cov ntaub ntawv , thiab txoj kev muaj nuj nqis ntawm qhov ntawd hom tuaj yeem khaws cia.
Ob hom ntaub ntawv yog dab tsi?
Cov Ob Main Flavors ntawm Cov ntaub ntawv : Qualitative thiab Quantitative Nyob rau theem siab tshaj, ob hom ntawm cov ntaub ntawv muaj nyob: quantitative and qualitative. Muaj nuj nqis cov ntaub ntawv suav nrog cov lej thiab yam uas koj tuaj yeem ntsuas lub hom phiaj: qhov ntev xws li qhov siab, qhov dav, thiab ntev. Kub thiab humidity.
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