Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
549 views
in Technique[技术] by (71.8m points)

map - Does Java's LinkedHashMap maintain the order of keys?


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Yes.

See: LinkedHashMap:

This linked list defines the iteration ordering, which is normally the order in which keys were inserted into the map (insertion-order).

and from the HashMap#keySet documentation:

The set [returned] is backed by the map, so changes to the map are reflected in the set, and vice-versa.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...