Video: Vim li cas peb siv teeb tsa hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Java - Cov Teeb Interface. A Teeb yog ib qho Collection uas tsis tuaj yeem muaj cov khoom sib npaug. Nws ua qauv lej teeb abstraction. Teeb kuj ntxiv ib daim ntawv cog lus muaj zog ntawm tus cwj pwm ntawm qhov sib npaug thiab kev ua haujlwm hashCode, tso cai Teeb piv txwv kom muab piv rau qhov muaj txiaj ntsig txawm tias lawv hom kev siv sib txawv.
Tsis tas li ntawd, dab tsi yog kev siv teeb tsa hauv Java?
Teeb tsa hauv Java . Teeb yog ib qho interface uas txuas ntxiv Collection. Nws yog ib qho kev sau cov khoom uas tsis tau txiav txim nyob rau hauv uas duplicate qhov tseem ceeb khaws tsis tau. Hauv paus, Teeb yog siv los ntawm HashSet, LinkedHashSet lossis TreeSet (tso sawv cev).
Tsis tas li ntawd, vim li cas peb thiaj siv teeb tsa thiab tau txais txoj hauv kev hauv Java? Cov tau txoj kev yog siv rau tau los yog retrieve ib qho txawv txawv tus nqi los ntawm ib chav kawm. A teeb tus nqi yog siv khaws cov variables. Tag nrho cov ntsiab lus ntawm lub tau thiab teeb yog mus retrieve thiab khaws cov ntaub ntawv muaj nuj nqis raws li.
Dhau li ntawd, vim li cas peb thiaj siv HashSet hauv Java?
Java HashSet chav kawm yog siv los tsim ib phau ntawv uas siv ib lub rooj hash rau khaws cia. Nws inherits chav kawm AbstractSet thiab siv Teeb interface. HashSet chav kawm yog tsis synchronized. HashSet tsis tswj qhov kev txiav txim ntxig.
Cov npe twg zoo dua lossis teeb tsa?
Qhov txawv yog qhov ntawd Teeb yog khaws cia rau hauv unordered txoj kev thiab tsis tso cai duplicate tus nqi. Sau npe yog siv los khaws cov khoom nyob rau hauv kev txiav txim thiab nws tso cai rau duplicate qhov tseem ceeb. Teeb cov ntsiab lus tsis tuaj yeem nkag los ntawm qhov ntsuas qhov ntsuas, thiab Sau npe cov ntsiab lus tuaj yeem nkag tau nrog txoj haujlwm index.
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