java - 打印包含字符串和对象列表的 HashMap

Question

如何打印包含字符串和对象列表的 HashMap？

HashMap<String, List<Object>> Map = new HashMap<String, List<Object>>();

每个对象都有一个名称和一个键值，所以我需要得到如下内容:

StringFirst = [ firstObject 15, second object 31, thirdobject 16]
StringSecond = [ fourthObject 15, fifthObject 31, sixthObject 16]

    public static class Graph {

    public class Edge extends Graph {
        String edgeName;
        int time;

        Edge(String edgeName, int time){
            this.edgeName = edgeName;
            this.time = time;
        }

        public void Out(){
            System.out.println(this.edgeName);
            System.out.println(this.time);
        }
    }

Answer 1

尝试打印 map :

for(Map.Entry<String, ArrayList<Edge>> e : map.entrySet()){
   for(Edge e1 : e.getValue())
      System.out.println(e.getKey() + " = "+ e1.Out());
}