Video: Dab tsi yog kev siv cov chav kawm paub daws teeb meem hauv lub sijhawm tiag tiag?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Yog li ntawd, chav kawm paub daws teeb meem tuaj yeem siv los sib sau ua ke thiab sib koom ua haujlwm, thaum lub 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.
Raws li txoj cai, peb siv chav kawm paub daws teeb meem nyob qhov twg?
Ib qho piv txwv ntawm ib chav kawm abstract yuav yog a chav kawm hu ua Tsiaj. Koj pom ntau yam tsiaj hauv tiag lub neej, tiam sis tsuas muaj hom tsiaj xwb. Ntawd yog, koj Tsis txhob saib tej yam ntshav thiab furry thiab hais tias "uas yog tsiaj thiab tsis muaj ib txoj hauv kev los txhais nws".
Tom qab, lo lus nug yog, thaum twg peb yuav tsum siv interface thiab abstract class? Koj yuav siv ib chav kawm abstract yog tias koj xav muab ib feem kev siv rau cov subclasses txuas ntxiv, thiab ib qho interface yog tias koj tsuas xav muab kos npe ntawm txoj kev uas yuav tsum yuav siv tau. Nws yog zoo kawg nkaus ib txwm muab ob qho tib si thiab interface thiab ib chav kawm abstract uas siv qee qhov ntawm nws.
Tsis tas li nug, kev siv cov chav kawm paub daws teeb meem yog dab tsi?
abstract lo lus tseem ceeb yog siv los tsim ib qho chav kawm abstract thiab txoj kev. Abstract chav kawm hauv java yuav tsis tau instantiated. Ib chav kawm abstract feem ntau yog siv los muab lub hauv paus rau subclasses kom txuas ntxiv thiab siv tau abstract txoj kev thiab override los yog siv cov txheej txheem siv nyob rau hauv chav kawm abstract.
Lub sijhawm tiag tiag ntawm kev siv interface hauv Java yog dab tsi?
Ib interface hauv java nws muaj qhov zoo li qub thiab cov kev paub daws teeb meem nkaus xwb. rau piv txwv ntawm lub sijhawm - nws yog 100% abstraction. Inteface yog siv los ua kom tiav 100 feem pua abstraction, kuv txhais tau tias koj tsis tuaj yeem tsim ib qho khoom rau qhov ntawd interface chav kawm ncaj qha, tsis muaj tus tsim sab hauv interface.
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