package org.r00txx.tese; import com.sun.javafx.collections.MappingChange; import java.awt.*; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import java.util.Set; public class ConvertorTest { public static void main (String[] args) { testList2Array(); testArra2List(); testSet2List(); testList2Set(); testSet2Array(); testArray2Set(); testMap2Set(); testMap2List(); } private static void testMap2List() { Map map = new HashMap(); map.put("A", "ABC"); map.put("K", "KK"); map.put("L", "LV"); //将 map key 转化为 list List mapKeyList = new ArrayList(map.keySet()); System.out.println("map key list: " + mapKeyList); //将 map value 转化为 list List mapValueList = new ArrayList(map.values()); System.out.println("map value list: " + mapValueList); } private static void testMap2Set () { Map map = new HashMap(); map.put("A", "ABC"); map.put("K", "KK"); map.put("L", "LV"); //讲 map 的键转化为 set Set mapKeySet = map.keySet(); } }