Cov chav kawm paub daws teeb meem puas tuaj yeem muaj kev hloov kho?
Cov chav kawm paub daws teeb meem puas tuaj yeem muaj kev hloov kho?

Video: Cov chav kawm paub daws teeb meem puas tuaj yeem muaj kev hloov kho?

Video: Cov chav kawm paub daws teeb meem puas tuaj yeem muaj kev hloov kho?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Ib Java chav kawm muaj ib chav kawm abstract yuav tsum tau tshaj tawm tias chav kawm abstract . Ib abstract txoj kev ua tau tsuas set a visibility modifier , ib qho ntawm pej xeem lossis tiv thaiv. Ntawd yog, ib abstract txoj kev tsis tuaj yeem ntxiv zoo li qub lossis zaum kawg modifier rau kev tshaj tawm.

Kuj kom paub yog, cov chav kawm paub daws teeb meem puas tuaj yeem nkag mus hloov kho hauv C #?

Ib Cov chav kawm Abstract tuaj yeem muaj kev hloov kho xws li private, tiv thaiv, internal nrog chav kawm cov tswv cuab. Tab sis abstract cov tswv cuab ua tsis tau muaj tus kheej access modifier . Ib Cov chav kawm Abstract tuaj yeem muaj piv txwv variables (xws li tas mus li thiab teb).

Tsis tas li ntawd, cov chav kawm paub daws teeb meem puas muaj txoj kev txhais? Abstract chav kawm hauv Java zoo ib yam li interface tshwj tsis yog tias nws ua tau muaj default txoj kev kev siv. Ib chav kawm abstract tuaj yeem muaj ib abstract method tsis muaj lub cev thiab nws tuaj yeem muaj txoj hauv kev nrog rau kev siv thiab. abstract lo lus tseem ceeb yog siv los tsim ib qho chav kawm abstract thiab txoj kev.

Kuj Paub, chav kawm paub daws teeb meem tuaj yeem tau txais los ntawm lwm chav kawm paub daws teeb meem?

Yog koj tuaj yeem tau txais qub txeeg qub teg ib chav kawm abstract los ntawm lwm chav kawm abstract . Thaum twg koj xav tau chav kawm rau tau txais txiaj ntsig los ntawm lwm chav kawm , koj yuav xav saib xyuas (feem ntau ntawm lub sijhawm) rau lub kaw lus hloov kho.

Cov chav kawm abstract puas tuaj yeem ua tau zoo li qub?

Tsis muaj chav kawm abstract ua tsis tau zoo li qub . Abstract chav kawm yog siv los txhais ib tug general abstraction uas ces sub- chav kawm qub txeeg qub teg los txhais tshwj xeeb versions. zoo li qub lo lus tseem ceeb hauv chav kawm txhais tau tias txhua txoj hauv kev chav kawm yog zoo li qub ib yam nkaus.

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