Dab tsi yog header hauv Java?
Dab tsi yog header hauv Java?

Video: Dab tsi yog header hauv Java?

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

Cov taub hau yog qhov koj qhia Java hom nqi dab tsi, yog tias muaj, txoj kev yuav rov qab (tus nqi int, tus nqi ob, tus nqi hlua, thiab lwm yam). Raws li qhov rov qab hom, koj xav tau lub npe rau koj txoj kev, uas kuj mus rau hauv taub hau . Koj tuaj yeem hla qhov tseem ceeb rau koj txoj hauv kev, thiab cov no mus ntawm ib khub ntawm cov kab sib dhos.

Hauv qhov no, dab tsi yog chav kawm header hauv Java?

Ntawm no yog ib qho kev tawg ntawm qhov chaws sawv cev ntawm a Java chav kawm . A chav kawm tuaj yeem faib ua ob yam: thawj daim yog a chav kawm - taub hau uas muaj lo lus tseem ceeb " chav kawm "thiab lub npe koj muab rau lub chav kawm . Cov npe hauv cov lus programming tseem hu ua tus cim. Qhov thib ob yog lub cev.

Ib sab saum toj no, plaub yam ntawm ib txoj kev header yog dab tsi? Cov method header suav nrog kev nkag mus hloov pauv (public zoo li qub), hom rov qab (int), txoj kev npe (min), thiab parameters (int a, int b); yog tias qhov no txoj kev pov ib qho kev zam, lawv yuav tshwm sim tom ntej.

Ib yam li ntawd, nws yog nug, dab tsi yog ib txoj hauv kev header?

A method header yog ib feem ntawm txoj kev txhais uas tshwm sim thaum pib. Cov lus txhais hauv qab no tawm ob peb yam tsis paub meej, tab sis muab cov syntax ntawm qhov qub method headers.

Vim li cas peb thiaj siv rov qab rau hauv Java?

rov qab los yog ib tug reserved keyword nyob rau hauv Java i.e, peb ua tsis tau siv nws raws li tus cim. Nws yog siv los tawm ntawm txoj kev, nrog lossis tsis muaj nqi. rov qab los tuaj yeem siv nrog txoj hauv kev hauv ob txoj kev: Txoj Kev rov qab los tus nqi: Rau cov txheej txheem uas txhais a rov qab los hom, rov qab los nqe lus yuav tsum tau ua raws li tam sim ntawd rov qab los tus nqi.

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