Video: Dab tsi yog txhais los ntawm chav kawm nkag mus hloov pauv?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Access modifiers (los yog nkag mus specifiers) yog cov lus tseem ceeb hauv cov lus taw qhia uas teeb tsa kev nkag mus tau ntawm chav kawm , txoj kev, thiab lwm yam tswv cuab. Qhov no yog qhov feem ntau siv tus qhia rau chav kawm . A chav kawm tsis tuaj yeem tshaj tawm tias yog tus kheej.
Tsis tas li lo lus nug yog, dab tsi nkag tau hloov pauv tuaj yeem siv rau hauv chav kawm?
Yog tsis muaj lo lus tseem ceeb hais ces yog ua ntej access modifier. Plaub qhov kev hloov pauv hauv java suav nrog pej xeem, ntiag tug, tiv thaiv thiab ua ntej . Private thiab Tiv thaiv lo lus tseem ceeb tsis tuaj yeem siv rau cov chav kawm thiab kev sib tshuam.
Ib yam li ntawd, nkag mus hloov pauv hauv Java nrog piv txwv yog dab tsi? Nkag siab Java Access Modifiers
| Access Modifier | hauv chav kawm | sab nraud pob los ntawm subclass nkaus xwb |
|---|---|---|
| Tus kheej | Y | N |
| Default | Y | N |
| Tiv thaiv | Y | Y |
| Public | Y | Y |
Tsis tas li ntawd, dab tsi yog txhais los ntawm kev nkag mus hloov pauv hauv Java?
A Java access modifier qhia tau cov chav kawm twg nkag mus ib tug muab chav kawm thiab nws cov teb, constructors thiab txoj kev. Java access modifiers kuj qee zaum kuj raug xa mus rau hauv kev hais lus txhua hnub li Java access specifiers , tab sis lub npe tiag tiag Java access modifiers.
Dab tsi yog qhov hloov pauv nkag tau muaj nyob hauv C ++ chav kawm piav qhia lawv nrog piv txwv?
Hauv C ++, muaj peb yam nkag mus Specifiers: pej xeem - cov tswv cuab tuaj yeem nkag tau los ntawm sab nraud chav kawm . ntiav - cov tswv cuab tsis tuaj yeem ua tau nkag mus (los yog saib) los ntawm sab nraud chav kawm . tiv thaiv - cov tswv cuab tsis tuaj yeem ua tau nkag mus los ntawm sab nraud chav kawm , txawm li cas los xij, lawv tuaj yeem ua tau nkag mus nyob rau hauv qub txeeg qub teg chav kawm.
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