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HashMap
HashMap Key of key understand
HashMap Save key value pairs (key-value), adopt key Can be uniquely obtained value. Whether the key values are the same is determined by two functi...
2021-08-24 23:44
views 9
ConcurrentHashMap How to ensure thread safety
JDK1.7, Segment lock technology is essentially array + The form of linked list stores key value pairs . To improve concurrency , The original whole...
2021-04-09 13:42
views 52
Java of HashMap Multiple ways to traverse , Dynamic deletion
ergodic HashMapMap<Integer, String> map = new HashMap<>();map.put(1, "aaa");map.put(2, "bbb");map.put(3, "ccc");map.put(4, "ddd"); Com...
2021-01-23 21:41
views 36
Tiktok Java Three aspects of post technology sharing :Java Basics + network HashMap+JVM+ database
one side (40 minute ) The comparative basis of one side question project Java Object What are the methods of a class , Separate action HashMap...
2020-10-13 16:00
views 19
HashMap realization LRU( Least recently used ) Cache update algorithm
Recently Alibaba telephone interview was asked how to use fixed capacity HashMap, realization LRU algorithm . At that time, he was confused , Usua...
2019-05-30 07:54
views 64
ergodic HashMap Four methods of
stay Map In the set values(): Method is to get all the values in the collection ---- There is no key , There is no correspondence ,KeySet(): take ...
2019-04-26 15:27
views 43
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