Dab tsi yog catch exception hauv Java?
Dab tsi yog catch exception hauv Java?

Video: Dab tsi yog catch exception hauv Java?

Video: Dab tsi yog catch exception hauv Java?
Video: Saum neej tsis yeej hauv dab tsis tseg.9/10/2018 2024, Kaum ib hlis
Anonim

Java ntes block yog siv rau kov tus Kev zam los ntawm kev tshaj tawm hom kev zam nyob rau hauv parameter. Qhov tshaj tawm kev zam yuav tsum yog cov parentclass kev zam (ie, Kev zam ) los yog thegenerated kev zam hom. Cov ntes block yuav tsum tau siv tom qab sim block nkaus xwb.

Ntawm no, dab tsi yog sim ntes kev zam hauv Java?

Java sim thiab ntes Cov sim nqe lus tso cai rau koj los txhais cov blockofcode kom raug kuaj rau qhov tsis raug thaum nws raug tua. ntes nqe lus tso cai rau koj los txhais ib qho thaiv ntawm code tobeexecuted, yog tias muaj kev ua yuam kev tshwm sim hauv sim thaiv.

Dab tsi yog qhov tshwj xeeb hauv Java nrog piv txwv? Runtime yuam kev yog hu ua ib Kev zam error. It yog ib qho xwm txheej uas cuam tshuam qhov kev khiav haujlwm ntawm kev ua haujlwm. Piv txwv rau kev zam yog, arithmetic kev zam , Nullpointer kev zam , Faib byzero kev zam , lwm. Exceptions nyob rau hauv Java yog tej yam uas tawm ntawm developers tswj.

Kuj Paub, dab tsi yog qhov kev zam hauv Java?

Kev zam yog cov xwm txheej uas tshwm sim thaum lub sijhawm ua tiav ntawm cov kev pab cuam uas cuam tshuam qhov kev khiav dej num ntawm cov lus qhia (xws li faib los ntawm xoom, array nkag tawm ntawm kev khi, thiab lwm yam). Java , ib kev zam yog ib yam khoom uas wraps anerrorevent uas tshwm sim nyob rau hauv ib txoj kev thiab muaj: Cov ntaub ntawv hais txog qhov yuam kev nrog rau nws hom.

Dab tsi yog qhov tshwj xeeb hauv programming?

Definition: Ib kev zam yog ib qho kev tshwm sim, uas tshwm sim thaum ua tiav ntawm a qhov kev pab cuam , uas cuam tshuam thenormalflow ntawm cov program cov lus qhia. Thaum ib qho erroroccurswithin ib txoj kev, tus txheej txheem tsim ib yam khoom thiab muab nws tawm mus rau lub runtime system. Qhov block ntawm code no hu ua ib kev zam tus tuav.

Pom zoo: