HashMap and put warnings because unchecked calls...

I'm writting an application that connects to some APIs, but when compiling, I get some warning messages:

warning: [unchecked] unchecked call to put(K, V) as a member of the raw type java.util.HashMap

Here is the code:

publicclass hashMapMgr{

HashMap hm;

public hashMapMgr(){

hm =new HashMap;

hm.clear();

}

publicvoid addKey(String key, String value)throws myException{

Object status;

if (key.length()==0 && value.length()==0){

throwsnew myException ("Error");

}

status = hm.put(key,value);

}

public HashMap getMap(){

return hm;

}

}

Why am I getting that warning message? Should I use a try..catch to remove the warning message? or should I extend or implement something?

Thanks

[1510 byte] By [RobertoZozayaa] at [2007-11-27 1:49:44]