摘要:        
When only the keys from a map are needed in a loop, iterating the keySet makes sense. But when both the key and the value are needed, it's more effici    阅读全文
posted @ 2018-10-16 15:43
赭山东路
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摘要:        
It is better to use their new unsynchronized replacements: ArrayList or LinkedList instead of Vector Deque instead of Stack HashMap instead of Hashtab    阅读全文
posted @ 2018-10-16 15:02
赭山东路
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