Video: Peb puas tuaj yeem muaj ntau chav kawm pej xeem hauv chav kawm hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Yog, nws ua tau . Txawm li cas los xij, muaj ua tau xwb beone pej xeem chav kawm rau. java ua file, ua cov chav kawm pej xeem yuav tsum muaj tib lub npe raws li lub hauv paus ntaub ntawv. Ib Java ntaub ntawv ua tau suav nrog ntau chav kawm nrog rau kev txwv uas tsuas yog ib qho ntawm lawv ua tau ua pej xeem.
Ib yam li ntawd, tib neeg nug, peb puas tuaj yeem muaj ntau pawg pej xeem hauv ib chav kawm?
Koj tuaj yeem muaj ntau chav kawm hauv ib chav kawm . Lawv hu ua puab Chav kawm es lub cov chav kawm nested . Koj ua tau txawm muaj ntau chav kawm txhais hauv ib qho.java cov ntaub ntawv tsis muaj ib qho nested lwm (muab tias tsuas yog ib qho xwb pej xeem ,vim a pej xeem chav kawm yuav tsum tau tshaj tawm hauv ib daim ntawv teev npe tom qab).
Ib sab saum toj no, vim li cas thiaj yuav tsum muaj tsuas yog ib chav pej xeem hauv Java? Compiler kuj tso qhov kev txwv ntawd yuav tsum yuav luag ib hoob pej xeem rau Java file, yog li ntawd txhua pej xeem chav kawm tuaj yeem nkag los ntawm lub ntiaj teb sab nraud. Ib ob Cov chav kawm Java los yog interfaces hauv tib pob khoom tsis tuaj yeem muaj tib lub npe.
Hais txog qhov no, vim li cas peb tsis tuaj yeem muaj ntau dua ib chav pej xeem hauv tib cov ntaub ntawv?
Yog li thaum peb muab ntau tshaj ib pawg pej xeem nyob rau hauv ib qho kev pab cuam lub compiler nws tus kheej nres koj rho tawm ib yuam kev. Qhov no yog vim tom qab peb ua tsis tau tsis meej pem JVM li qhov twg chav kawm yog to ua nws pib chav kawm , vim xwb ib chav kawm pej xeem nrog tus pej xeem static void main(String args) yog qhov pib chav kawm rau JVM.
Peb puas tuaj yeem tsim ntau chav kawm hauv ib qho Java?
Yog, nws ua tau . Txawm li cas los xij, muaj ua tau tsuas yog ua ib pej xeem chav kawm rau. java file , raws li pej xeem chav kawm yuav tsum muaj tus ib yam npe raws li qhov chaw ntaub ntawv . Ib cov ntaub ntawv Java tuaj yeem ua tau suav nrog ntau chav kawm nrog rau kev txwv uas tsuas yog ib ntawm lawv ua tau ua pej xeem.
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