Video: Cov chav kawm paub daws teeb meem puas tuaj yeem muaj kev hloov kho?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
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.
Pom zoo:
Muaj pes tsawg txoj kev daws teeb meem tuaj yeem muaj teeb meem LP?
"Tsis yog, nws tsis tuaj yeem ua rau tus qauv LP kom muaj ob qho kev daws teeb meem zoo." Tus qauv LP tuaj yeem muaj 1 qhov kev daws teeb meem zoo tshaj plaws lossis ntau dua 1 qhov kev daws teeb meem zoo, tab sis nws tsis tuaj yeem muaj 2 qhov kev daws teeb meem zoo
Dab tsi yog chav kawm paub daws teeb meem hauv C# Cov Lus Nug Sib Tham?
C# thiab. NET kev xam phaj cov lus nug: -Dab tsi yog qhov txawv ntawm chav kawm paub daws teeb meem thiab kev sib tshuam? Abstract class Interface Variable declaration Peb tuaj yeem tshaj tawm qhov sib txawv hauv interface peb ua tsis tau. Inheritance vs Implementation Abstract classes are inherited. Interfaces yog siv
Dab tsi yog kev siv cov chav kawm paub daws teeb meem hauv lub sijhawm tiag tiag?
Yog li, cov chav kawm paub daws teeb meem tuaj yeem siv los sib sau ua ke thiab sib koom ua haujlwm, thaum cov interfaces tuaj yeem siv los qhia seb qhov kev ua haujlwm zoo li cas uas yuav muab sib koom ntawm cov xwm txheej sib txawv yuav yog, yam tsis tau tsim qhov kev ua haujlwm rau lawv. Ob leeg tuaj yeem pab koj ua koj tus lej me me, tsuas yog ntau txoj hauv kev
Dab tsi yog qhov xav tau rau cov chav kawm paub daws teeb meem thiab kev paub daws teeb meem?
Cov chav kawm Abstract. Abstract (uas Java txhawb nrog cov ntsiab lus paub daws teeb meem) txhais tau hais tias chav kawm lossis txoj hauv kev lossis teb lossis txhua yam tsis tuaj yeem ua tam sim (uas yog, tsim) qhov twg nws tau txhais. Lwm yam khoom yuav tsum instantiate cov khoom nyob rau hauv nqe lus nug. Yog tias koj ua ib chav kawm abstract, koj tsis tuaj yeem instantiate ib yam khoom los ntawm nws
Cov chav kawm paub daws teeb meem puas muaj cov txheej txheem tsis paub meej?
Yog lawm peb tuaj yeem muaj chav kawm paub daws teeb meem yam tsis muaj Abstract Methods vim ob qho tib si yog cov tswv yim ywj pheej. Tshaj tawm hauv chav kawm paub daws teeb meem txhais tau hais tias nws tsis tuaj yeem ua tam sim ntawd ntawm nws tus kheej thiab tsuas yog muab faib ua sub. Tshaj tawm ib txoj kev paub daws teeb meem txhais tau hais tias Method yuav raug txhais hauv subclass