java - Remove duplicated key Map.Entry from a List -

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i have list of map.entry, in roder have list of pairs.

in list, inserting pairs key long value representing unix epoch, , value string text:

arraylist<map.entry<long, string>> events = new arraylist<map.entry<long, string>>(); events.add(new map.entry<long, string>(140000000, "test event"));

i want remove map.entry duplicated key, each unix epoch have associated string. fancy way of doing without iterating whole list manually?

bonus if string value concat of string values same key.

use hashmap - allows single entry per key, overwrite. can mapentries out of map using map.entryset. works if keys same values different.

just putting entries set work if key , value pairs same, i.e. identical entries, opposed having same key. behaviour of mapentry.equals() understand this.


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