Vim li cas peb yuav tsum tsis txhob ntes runtime zam?
Vim li cas peb yuav tsum tsis txhob ntes runtime zam?

Video: Vim li cas peb yuav tsum tsis txhob ntes runtime zam?

Video: Vim li cas peb yuav tsum tsis txhob ntes runtime zam?
Video: Google Colab — совместное использование ноутбуков! 2024, Kaum ib hlis
Anonim

Catch Exception los yog Throwable

Runtime kev zam sawv cev rau cov teeb meem uas yog qhov tshwm sim ncaj qha ntawm qhov teeb meem programming, thiab xws li yuav tsum tsis txhob raug ntes vim nws tsis tuaj yeem xav kom rov zoo los ntawm lawv lossis kov lawv. ntes Throwable yuav ntes txhua yam

Xav txog qhov no, nws puas tau txais kev zam runtime?

Runtime kev zam tuaj yeem tshwm sim nyob qhov twg hauv ib qho kev pab cuam thiab hauv qhov kev zov me nyuam tuaj yeem ua tau ntau heev. Feem ntau, tus nqi kuaj xyuas runtime kev zam tshaj qhov txiaj ntsig ntawm ntes los yog qhia lawv. Yog li lub compiler tsis xav kom koj ntes los yog qhia runtime kev zam , txawm tias koj tuaj yeem ua tau.

Kuj Paub, dab tsi yog qhov kev zam runtime? Cov Runtime Exception yog niam txiv chav kawm nyob rau hauv tag nrho kev zam ntawm Java programming lus uas xav tias yuav poob lossis tawg qhov program lossis daim ntawv thov thaum lawv tshwm sim. Cov Runtime Exception feem ntau qhia tau hais tias tus programmer qhov yuam kev, tsis yog qhov xwm txheej uas qhov kev zov me nyuam yuav tsum tau ua nrog.

Ntxiv mus, vim li cas Runtime Exceptions tsis raug kuaj?

Feem ntau, peb tsis ntes unchecked kev zam vim peb ua tsis tau nws. Siv cov ntaub ntawv sib txuas piv txwv li, yog tias DB lub cev poob qis, muaj tsis muaj txoj kev peb daim ntawv thov tuaj yeem daws qhov teeb meem ntawd, yog li txawm tias peb yuav ntes nws, peb tsis tuaj yeem daws (daws) nws.

Nws puas tuaj yeem ntes runtime zam hauv Java?

Runtime kev zam tuaj yeem tshwm sim nyob qhov twg hauv ib qho kev pab cuam, thiab nyob rau hauv ib qho raug lawv tuaj yeem ua tau ntau heev. Yog li, lub compiler tsis xav kom koj ntes los yog qhia runtime kev zam (txawm tias koj tuaj yeem ua tau). Ib rooj plaub uas nws yog ib qho kev xyaum pov ib RuntimeException yog thaum tus neeg siv hu ib txoj kev tsis raug.

Pom zoo: