Getting HashMap.get to work for the key object
I made a HashMap that uses a simple class Id as the key and a ServerInfo as the value. Id is simple -- just a char and an int, i.e. new Id('A', 1). The problem I'm having is when I use an Id ('A', 1) as a key and associate some ServerInfo object with it, then try to use a different Id with those same values to retrieve the ServerInfo, no entry in the map is found.
I created a Id.equals() which evaluates to true for 2 different ('A', 1) Ids, and also created a Id.hashCode() which returns an int value of the char + the int, so 2 different Ids containing ('A', 1) return the same hash code. And yet get still won't return a stored object.
Anyone know how to get this to work?
If it helps, the code of interest in the Id class is:
publicint hashCode(){
int rv = type + intId;
}
publicboolean equals(Id otherId){
return this.toString().equals(otherId.toString());
}
public String toString(){
returnnew String("" + type + intId);
}
and code used elsewhere to demonstrate this doesn't work:
Id test1 =new Id('A', 1);
servers.put(test1,new ServerInfo(test1));
Id test2 =new Id('A', 1);
si = servers.get(test2);// SI IS NULL instead of new ServerInfo(test1)
