WeakHashMap 类

第 35 / 58 卷日期：2020-05-10

WeakHashMapᔄचԭߢ૶ᤒጱMapचᏐਫሿ҅ଃํ୧Ძ̶	WeakHashMapӾጱentry୮ӧֵٚአ෸
ᬮտᛔۖᑏᴻ̶ๅٵᏟጱ᧔҅ᕳਧ	keyጱฉ੘ጱਂࣁਖ਼ӧտᴥྊ keyᤩ࣯࣍තᵞ࢏Ӷ୒̶
चԭmapളݗ҅ฎӞᐿ୧Ძፘᬳ҅	WeakHashMap᯾ᶎጱᲫտᛔۖࢧත

ඪ೮ null ޾꧊ null Ძ̶ fast-fail ګ๢

ӧ꧋ᦜ᯿॔ WeakHashMap ᕪଉአ֢ᖨਂ

Collections ᔄ

Collections ӧંԭJava ໛ຝᖀಥ໅Ӥጱٖ਻҅ਙંԭܔᇿጱړඪ҅Collections ฎӞӻ۱ᤰᔄ҅ਙጱ֢ አ੪ฎԅᵞݳ໛ຝ൉׀຤Զۑᚆਫሿ҅ྌᔄ۱ݝೡᶉாොဩ඙֢౲ᘏᬬࢧcollections̶

ྍ۱ᤰݶ

ݶྍ۱ᤰ࢏ਖ਼ᛔۖݶྍҁᕚᑕਞق௔҂Ⴒکےձ఺ᵞݳ̶ҁݗളݳӻ໐ஞᵞمCollection҅Set҅List҅

Map҅	SortedSet޾SortedMap҂ӾጱྯӞӻ᮷ํӞӻᶉாૡܯොဩ̶
1	publicstatic CollectionsynchronizedCollection(Collectionc);
2	publicstatic SetsynchronizedSet(Sets);
3	publicstatic ListsynchronizedList(Listlist);
4	publicstatic<K,V>Map<K,V>synchronizedMap(Map<K,V>m);
5	publicstatic SortedSetsynchronizedSortedSet(SortedSets);
6	publicstatic<K,V>SortedMap<K,V>synchronizedSortedMap(SortedMap<K,V>m);

ӧץݢදጱ۱ᤰ

ڊଚಲ֢ጱ඙ݳදᵞץ᭗ᬦೝ౼࢏දጱ۱ᤰץݢӧUnsupportedOperationException ҅Ԇᥝአࣁӥ ᶎӷӻఘวғ

ࢧᬬݐ឴݄ӥ๋҅অӧᥝ٭̶ࣁᬯᐿఘݒݢӧֵٌݸݳ຅ୌᵞcollection ጱ୚አ҅ᬯ໏ํڥԭכᦤ ௔ݒӧ

꧋ᦜ຤Զਮಁᒒզݝ᧛ොୗᦢᳯ֦ጱහഝᕮ຅̶֦ ጱࢧኸ੒ᬬכcollection ੒۱ݎړ֕ጱ୚አ҅ ᤰ࢏ጱ୚አ̶᭗ᬦᬯᐿොୗ҅ਮಁݢզັ፡֕ӧᚆץද҅ݶ෸כ೮ਠقᦢᳯ๦ᴴ̶

ᬯԶොဩฎғ

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