顶层接口

第 31 / 58 卷日期：2020-05-10

ݗᶮ੶ള

Collection ฎӞӻᶮ੶ളݗ҅ਙԆᥝአ๶ਧԎᵞݳጱᕅਧ

List ളݗԞฎӞӻᶮ੶ളݗ҅ਙᖀಥԧCollection ݗള ҅෸ԞฎݶArrayList̵LinkedList ᔰزݳᒵᵞ ጱᆿᔄ

Set ԭӨ֖ݗളList ളݶݗᕆጱ੶ེӤ҅ਙݶ෸ԞᖀಥԧCollection ̶ݗളSet ളݗ൉׀ԧ᷐क़ጱᥢ ਧ̶ਙ੒add̵equals̵hashCode ොဩ൉׀ԧ᷐क़ጱຽٵ̶

Queue ޾ฎ List̵Set ጱڜଚݗള Collection ጱӣय़ളݗԏӞ̶Queue ጱᦡᦇአ๶ࣁ॒ቘԏכڹ೮ز

ᔰጱᦢᳯེଧ̶ᴻԧ	CollectionचᏐጱ඙֢ԏक़҅ᴚڜ൉׀ԧ᷐क़ጱൊف҅᧛ݐ҅༄ັ඙̶֢
SortedSetളݗፗളᖀಥԭSetአֵ҅ݗള	Comparable੒زᔰᬰᤈᛔᆐഭଧ౲ᘏֵአ Comparatorࣁ
̶ڞጱഭଧᥢګਧ׀ᔰ൉زୌ෸੒ڠ	setጱᬽդ࢏ਖ਼ೲ܋ଧزᔰᶲଧ᭭ܲᵞݳ̶
MapฎӞӻඪ೮key-value ਂؙጱ੒᨝҅	Mapӧᚆ۱ތ᯿॔ጱ key҅ྯӻᲫ๋ग़ฉ੘Ӟӻ꧊̶ᬯӻള
դ๊ԧݗ Dictionaryᔄ҅	DictionaryฎӞӻು᨝ᔄᘒӧฎളݗ̶

ArrayList ฎਫሿԧ List ጱݗള ݢಘ਻හᕟ(ۖாහᕟ) ҅ਙጱٖ᮱ฎचԭහᕟਫሿጱ̶ਙጱٍ֛ਧԎই ӥғ

1public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, Cloneable, java.io.Serializable {...}

ArrayListݢզਫሿಅํݢᭌೠጱڜᤒ඙֢҅꧋ᦜಅํጱزᔰ҅۱ೡᑮ꧊̶	ArrayListᬮ൉׀ԧٖ᮱
ਂؙ listጱොဩ҅ਙᚆड़ਠق๊դ Vector҅ݝํӞᅩֺक़҅	ArrayListӧฎᕚᑕਞقጱ਻࢏̶
ArrayList ํӞӻ਻ᰁጱ༷ஷ҅ᬯӻහᕟጱ਻ᰁ੪ฎ	Listአ๶ਂؙزᔰጱ਻ᰁ̶
ArrayListӧฎᕚᑕਞقጱ਻࢏҅ইຎग़ӻᕚᑕӾᛗ੝ํӷӻᕚᑕץදԧ	ArrayListጱᕮ຅ጱᦾ੪տ
੕ᛘᕚᑕਞقᳯ֢᷌҅ԅ๊դ๵կݢզֵአᕚᑕਞقጱ	List҅አֵଫ

Collections.synchronizedList ̶

1	Listlist=Collections.synchronizedList(newArrayList(...))
	ArrayList ٍํ fail-fastள᭛०ᨳ๢ګ҅ᚆड़੒ ArrayList֢ ڊ०ᨳ༄ၥ̶୮ࣁᬽդᵞݳጱᬦᑕӾᧆ
	ᵞݳࣁᕮ຅Ӥݎኞදݒጱ෸ײ҅੪ํݢᚆտݎኞ fail-fast҅ڊಲܨ

ConcurrentModificationException ୑ଉ̶

Vector ݶ ArrayList Ӟ໏҅᮷ฎचԭහᕟਫሿጱ҅ݝӧᬦVector ฎӞӻᕚᑕਞقጱ਻࢏҅ਙ੒ٖ᮱ጱྯ ӻොဩ᮷ᓌܔᔋูጱӤᲁ҅᭿عग़ᕚᑕ୚᩸ጱਞق௔ᳯ᷌҅֕ฎ᭗ଉᬯᐿݶྍොୗᵱᥝጱ୏ᲀྲ᫾य़҅

ࢩྌ҅ᦢᳯزᔰጱපሲᥝᬱᬱ֗ԭArrayList̶

ᬮํӞᅩࣁԭಘ਻Ӥ҅ArrayList ಘ਻ݸጱහᕟᳩଶտीے 50%҅ᘒVector ጱಘ਻ᳩଶݸහᕟտीےӞ

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