Kev siv OutputStream hauv Java yog dab tsi?
Kev siv OutputStream hauv Java yog dab tsi?

Video: Kev siv OutputStream hauv Java yog dab tsi?

Video: Kev siv OutputStream hauv Java yog dab tsi?
Video: looj phaj kev siv 2024, Kaum ib hlis
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InputStream yog siv nyeem cov ntaub ntawv los ntawm ib qhov chaw thiab cov OutputStream yog siv rau kev sau cov ntaub ntawv mus rau qhov chaw. Ntawm no yog hierarchy ntawm cov chav kawm los cuam tshuam nrog Input thiab Output kwj. Ob qhov dej ntws tseem ceeb yog FileInputStream thiab FileOutputStream, uas yuav tau tham hauv no nyeem.

Yog li ntawd, OutputStream yog dab tsi hauv Java?

OutputStream yog chav kawm paub daws teeb meem uas sawv cev rau kev sau ntawv. Muaj ntau yam sib txawv OutputStream cov chav kawm, thiab lawv sau tawm rau qee yam (xws li lub vijtsam, lossis Cov Ntaub Ntawv, lossis byte arrays, lossis kev sib txuas hauv network, lossis lwm yam). Cov chav kawm InputStream nkag mus rau tib yam, tab sis lawv nyeem cov ntaub ntawv los ntawm lawv.

Tsis tas li ntawd, kev siv DataOutputStream hauv Java yog dab tsi? Java DataOutputStream chav kawm tso cai rau ib qho daim ntawv thov sau primitive Java cov ntaub ntawv hom mus rau cov zis kwj nyob rau hauv ib tug tshuab-ywj siab txoj kev. Java application feem ntau siv tus cov ntaub ntawv tso zis kwj los sau cov ntaub ntawv uas tuaj yeem nyeem tom qab los ntawm cov ntaub ntawv tawm tswv yim.

Kuj nug, dab tsi yog kev siv ByteArrayOutputStream hauv Java?

Java ByteArrayOutputStream Chav kawm. Java ByteArrayOutputStream chav kawm yog siv los sau cov ntaub ntawv rau ntau yam ntaub ntawv. Hauv cov kwj no, cov ntaub ntawv raug sau rau hauv ib qho byte array uas tuaj yeem sau rau ntau cov kwj tom qab.

Koj sau OutputStream hauv Java li cas?

Cov sau (int b) method of OutputStream chav kawm yog siv rau sau cov teev bytes rau lub tso zis ntws . Cov bytes yuav tsum tau sau yog yim qhov qis-qib ntawm qhov kev sib cav b. 24 qhov kev txiav txim siab ntawm b tsis quav ntsej. Subclass ntawm OutputStream yuav tsum muaj kev siv rau txoj kev no.

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