Java List to TreeMap -

Java List<MyClass> to TreeMap<Long, MyClass> -

is there way, how convert list<myclass> treemap<long, myclass> reasonable performance? have found method maps.uniqueindex() in google collections, homecoming map.

list can destroyed during process of conversion, need treemap. utilize treemap because need fast search , indexation long.

thanks in advance

there no simpler method iteration.

map<long, myclass> tree = new hashmap<long, myclass>(); (myclass cl: classlist){ tree.put(cl.getid(), cl); }

just seelenvirtuose mentioned: if want search performance: hashmap, if want elements sorted utilize treemap. in search performance goes hashmap.

java list treemap