Video: Koj yuav pib qhov sib txawv li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Pib qhov hloov pauv txhais tau hais tias tus nqi pib los muab rau nws (piv txwv li, ua ntej nws siv txhua). Daim ntawv ceeb toom tias a sib txawv uas tsis yog pib tsis muaj tus nqi txhais tau, yog li nws siv tsis tau kom txog thaum nws muab tus nqi ntawd.
Tom qab ntawd, ib tus tuaj yeem nug, koj yuav tshaj tawm thiab pib qhov sib txawv li cas?
Thaum koj tshaj tawm a sib txawv , koj muab nws lub npe (npe/hnub nyoog) thiab ib hom (String/int): hlua lub npe; muaj hnub nyoog; Pib qhov hloov pauv yog thaum koj muab nws tus nqi.
Ib tug kuj yuav nug, ua li cas koj pib qhov sib txawv hauv C ++? Piv txwv li, tshaj tawm a sib txawv hom int hu ua x thiab pib nws mus rau tus nqi ntawm xoom los ntawm tib lub sijhawm nws tau tshaj tawm, peb tuaj yeem sau: int x = 0; Ib txoj kev thib ob, hu ua constructor pib (qhia los ntawm cov C++ lus), suav nrog tus nqi pib ntawm kab lus (()):
Tsis tas li, koj pib pib qhov sib txawv hauv Java li cas?
Koj ua tau pib tus sib txawv los ntawm kev qhia qhov sib npaug ntawm kos npe thiab tus nqi. Nco ntsoov tias cov pib kev qhia yuav tsum ua rau tus nqi ntawm tib yam (los yog sib xws) hom raws li tau teev tseg rau cov sib txawv . Tshaj tawm ntau tshaj ib sib txawv ntawm hom teev tseg, siv cov npe sib cais comma.
Vim li cas peb thiaj li yuav tsum tau pib qhov hloov pauv?
Pib pib a sib txawv raws li Telastyn tau taw qhia tuaj yeem tiv thaiv kab mob. Yog tias sib txawv yog hom kev siv, pib nws tuaj yeem tiv thaiv null siv yuam kev hauv kab. A sib txawv ntawm txhua yam uas tsis muaj null default yuav siv qee lub cim xeeb los khaws cov nqi qub.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?
Tshaj Tawm Ntau Yam Hloov Kho Lub Npe Cov Lus Qhia Loj Cov Cim Cim thiab / lossis cov lej me me. 1byte int Integer 4bytes bool Boolean tus nqi, tuaj yeem nqa ob qhov tseem ceeb 'True' lossis 'False 1bit ntab ntab ntab taw tes tus lej 4bytes
Kev sib cav sib ceg sib txawv li cas ntawm kev sib cav tsis zoo?
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Dab tsi yog qhov sib txawv ntawm qhov kev txiav tawm thiab qhov kev sib cav Ampliative?
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Dab tsi yog qhov sib txawv ntawm qhov sib xyaw ua ke thiab qhov qub txeeg qub teg?
Txawm hais tias ob qho tib si Inheritance thiab Composition muab code reusablelility, qhov sib txawv tseem ceeb ntawm Composition thiab Inheritance nyob rau hauv Java yog tias Composition tso cai rov qab siv code yam tsis tau ncua nws tab sis rau Inheritance koj yuav tsum ncua chav kawm rau ib qho kev rov qab siv code lossis functionality
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev sib txuas lus tsis sib xws thiab kev sib txuas lus taw qhia?
1. Hauv kev sib txuas lus tsis muaj kev sib txuas lus tsis tas yuav tsim kev sib txuas ntawm qhov chaw (sender) thiab qhov chaw (receiver). Tab sis nyob rau hauv kev sib txuas-taw qhia kev sib txuas lus kev sib txuas lus yuav tsum tau tsim ua ntej hloov cov ntaub ntawv