按Key 升序Comparator 实现Map sortMap = new TreeMap ( new Comparator (){ @Override public int compare(Integer o1, ... <看更多>

public class MapSortDemo {. public static void main(String[] args) {. Map<String, String> map = new TreeMap<String, String>(); //按照插入顺序排序. ... <看更多>

32. A map is not meant to be sorted, but accessed fast. · 2. A case where this might arise when we try to make use of a Counter in Java (Map<Object, Integer>). ... <看更多>