Dab tsi yog append () hauv Java?
Dab tsi yog append () hauv Java?

Video: Dab tsi yog append () hauv Java?

Video: Dab tsi yog append () hauv Java?
Video: Mus ua nyab rau yim hmoob tsis zoo 7/27/2017 2024, Kaum ib hlis
Anonim

ntxiv rau () txoj kev yog siv rau ntxiv txoj hlua sawv cev ntawm qee qhov kev sib cav rau qhov sib lawv liag. Muaj 13 txoj hauv kev / daim ntawv uas cov ntxiv rau () txoj kev tuaj yeem siv los ntawm kev dhau ntawm ntau hom kev sib cav: StringBuilder ntxiv (boolean a): Cov java ua . Rov qab Tus Nqi: Tus qauv xa rov qab siv rau qhov khoom no.

Tsuas yog li ntawd, dab tsi yog append hauv Java?

ntxiv () hauv Java Los ntawm: Jagan Printer Friendly Format. Cov ntxiv () method concatenates txoj hlua sawv cev ntawm lwm yam ntaub ntawv mus rau qhov kawg ntawm qhov invoking StringBuffer kwv. Nws muaj overloaded versions rau tag nrho cov built-in hom thiab rau Object. Nov yog ob peb ntawm nws cov ntawv: StringBuffer ntxiv (Txoj hlua str)

Ib yam li ntawd, dab tsi ntxiv rau hauv coding? Feem ntau, mus ntxiv yog koom lossis ntxiv rau qhov kawg ntawm ib yam dab tsi. Piv txwv li, ib daim ntawv ntxiv yog ib ntu ntxiv (ntxiv rau qhov kawg) ntawm daim ntawv. Hauv computer programming , ntxiv yog lub npe ntawm tus txheej txheem rau concatenating (txuas) cov npe lossis arrays hauv qee qib siab programming yam lus.

Kuj tseem paub yog, koj ua li cas ntxiv cov ntawv hauv Java?

Koj ua tau ntxiv ntawv nyeem rau hauv cov ntaub ntawv uas twb muaj lawm hauv Java los ntawm kev qhib cov ntaub ntawv siv FileWriter chav kawm hauv ntxiv hom. Koj tuaj yeem ua qhov no los ntawm kev siv tus tsim tshwj xeeb muab los ntawm chav kawm FileWriter, uas lees txais cov ntaub ntawv thiab boolean, uas yog dhau qhov tseeb ces qhib cov ntaub ntawv hauv ntxiv hom.

StringBuilder append ua haujlwm li cas?

StringBuilder . ntxiv (String str) txoj kev ntxiv txoj hlua uas tau teev tseg rau cov cim kab ke no. Cov cim ntawm txoj hlua sib cav yog ntxiv , nyob rau hauv kev txiav txim, nce qhov ntev ntawm qhov sib lawv liag los ntawm qhov ntev ntawm qhov kev sib cav.

Pom zoo: