Video: Dab tsi yog String object hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov hlua hauv Java yog Yam khoom uas yog txhawb sab hauv los ntawm char array. Txij li cov arrays tsis hloov pauv (tsis tuaj yeem loj hlob), Cov hlua yog immutable thiab. Thaum twg muaj kev hloov pauv rau a Txoj hlua yog tsim, ib qho tshiab nkaus Txoj hlua yog tsim.
Cov lus nug tseem yog, dab tsi yog txoj hlua hauv Java?
Txoj hlua yog ib ntu ntawm cov cim, piv txwv li. "Nyob zoo" yog ib txoj hlua ntawm 5 cim. Hauv java ua , txoj hlua yog ib yam khoom uas hloov tsis tau uas txhais tau hais tias nws yog tas mus li thiab tsis tuaj yeem hloov tau thaum nws tau tsim.
Yuav ua li cas koj tsim ib tug String kwv nyob rau hauv Java? Muaj ntau txoj hauv kev uas koj tuaj yeem tsim String Object hauv Java:
- Siv String literal. Koj tuaj yeem tsim String khoom nrog String literal. String str="Nyob zoo!";
- Siv lo lus tseem ceeb tshiab. Nov yog txoj hauv kev los tsim cov khoom String hauv java.
- Siv cov cim array. Koj tuaj yeem hloov cov cim array rau hauv String ntawm no.
Hais txog qhov no, dab tsi yog txoj hlua hauv Java nrog piv txwv?
Hauv Java , txoj hlua yog ib yam khoom uas sawv cev rau ib theem zuj zus ntawm char values. Ib qho array ntawm cov cim ua haujlwm zoo ib yam li Java hlua . Rau piv txwv : char ch={'j', 'a', 'v', 'a', 't', 'p', 'o', 'i', 'n', 't'};
Lub xeev ntawm ib txoj hlua khoom yog dab tsi nws tus cwj pwm yog dab tsi?
Ib khoom yog ib qho chaw uas encapsulates cov ntaub ntawv ntsig txog thiab tus cwj pwm , thaum ib chav kawm yog daim ntawv qhia rau ib hom khoom . Lub xeev yog dab tsi thiab tus cwj pwm ntawm a Txoj hlua khoom ? Cov xeev yog nws sequence ntawm cov cim, thiab cov tus cwj pwm yog nws txoj kev, xws li ntev thiab indexOf.
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