Java / Collections

The default capacity of Collection Elements: ArrayList, Vector, HashSet, Hashtable, and HashMap.

Collection	Java 8		Before Java 8
Collection	Initial capacity	Load factor	Initial capacity	Load factor
ArrayList	0 (lazily initialized to 10)		10
Vector	10		10
HashSet	16	0.75	16	0.75
HashMap	16	0.75	16	0.75
Hashtable	16	0.75	11	0.75

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List and its implementations

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