Video: Java yuam kev yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib yuam kev yog subclass ntawm Throwable uas qhia txog cov teeb meem loj uas daim ntawv thov tsim nyog yuav tsum tsis txhob sim ntes. Feem ntau qhov yuam kev no yog qhov txawv txav. Xov Xwm Tuag yuam kev , txawm tias ib qho "ib txwm", kuj yog ib qho subclass ntawm yuam kev vim tias feem ntau daim ntawv thov yuav tsum tsis txhob sim ntes nws.
Sib piv, qhov yuam kev hauv Java nrog piv txwv yog dab tsi?
java ua . lang. yuam kev chav kawm sawv cev rau yuam kev uas yog tshwm sim los ntawm ib puag ncig nyob rau hauv uas daim ntawv thov yog khiav. Rau piv txwv , OutOfMemoryError tshwm sim thaum JVM khiav tawm ntawm lub cim xeeb lossis StackOverflowError tshwm sim thaum pawg overflows.
Ib yam li ntawd, qhov yuam kev thiab nws hom hauv Java yog dab tsi? Muaj peb hom yuam kev : syntax yuam kev , runtime yuam kev , thiab logic yuam kev . Cov no yog yuam kev qhov twg tus compiler pom ib yam dab tsi tsis ncaj ncees lawm nrog koj qhov program, thiab koj tsis tuaj yeem sim ua kom tiav nws . Piv txwv li, tej zaum koj yuav muaj cov ntawv sau tsis raug, lossis tej zaum yuav sim siv qhov sib txawv uas tsis tau tshaj tawm.
Tsuas yog li ntawd, peb hom kev ua yuam kev hauv Java yog dab tsi?
Muaj peb hom kev ua yuam kev: syntax yuam kev, logical yuam kev thiab run-time yuam kev. ( Logical yuam kev tseem hu ua semantic yuam kev). Peb tau sib tham txog qhov yuam kev syntax hauv peb daim ntawv ntawm cov ntaub ntawv yam tsis raug.
Java yuam kev txhais li cas?
yuam kev V/s Exceptions In Java . yuam kev V/s Exceptions In Java . yuam kev : Ib yuam kev “hais txog teeb meem loj uas yog daim ntawv thov tsim nyog yuav tsum tsis txhob sim ntes. Ob leeg yuam kev thiab Exceptions yog cov subclasses ntawm java ua.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Dab tsi yog tus yuam sij ntiag tug thiab pej xeem tus yuam sij hauv Blockchain?
Thaum ib tug neeg xa koj cryptocoins hla Blockchain, lawv tau xa lawv mus rau qhov hashed version ntawm qhov hu ua "Public Key". Muaj lwm tus yuam sij uas zais ntawm lawv, uas yog hu ua "Private Key." Qhov Private Key no yog siv los muab Public Key
Cov yuam sij tseem ceeb thiab cov yuam sij txawv teb chaws yog dab tsi?
Relation of Primary Key vs Foreign Key Ib lub ntsiab tseem ceeb tshwj xeeb qhia cov ntaub ntawv nyob rau hauv lub rooj sib tham database, whereas tus yuam sij txawv teb chaws yog hais txog lub teb nyob rau hauv ib lub rooj uas yog lub ntsiab tseem ceeb ntawm lwm lub rooj
Vim li cas kev cob qhia yuam kev tsawg dua qhov kev xeem yuam kev?
Kev cob qhia yuam kev feem ntau yuav tsawg dua qhov kev xeem yuam kev vim tias tib cov ntaub ntawv siv los ua kom haum tus qauv yog ua haujlwm los ntsuas nws qhov kev kawm yuam kev. Ib feem ntawm qhov tsis sib xws ntawm qhov kev cob qhia yuam kev thiab qhov kev xeem yuam kev yog vim tias cov txheej txheem kev cob qhia thiab cov ntawv xeem muaj qhov sib txawv ntawm cov khoom siv
Dab tsi yog qhov yuam kev thiab kev zam hauv Java?
Qhov yuam kev 'qhia txog teeb meem loj uas daim ntawv thov tsim nyog yuav tsum tsis txhob sim ntes.' thaum. Ib qho Exception 'qhia tau hais tias ib daim ntawv thov tsim nyog yuav xav ntes.' Yuam kev nrog rau RuntimeException & lawv cov subclasses yog unchecked kev zam. Tag nrho lwm cov chav kawm Exception raug kuaj xyuas