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javaarrayshashmapbluejlinkedhashmap

Accesing a method in the last object in a LinkedHashMap

I've got a LinkedHashMap that contains an object at key and one at value.

I've used the code 

yourShots.keySet().toArray()[yourShots.size()-1]

to return the last object of the keys. However, I am unable to access a method that the object has.

I've used the getClass() method to determine that I do indeed have the right kind of object, but the method cannot be called. I simply get the error that the method cannot be found.

Am I doing something wrong?

Solution

  • toArray give you generic Object type. You have to cast it to your key class before using it.

    KeyClass key = (KeyClass) yourShots.keySet().toArray()[yourShots.size()-1];
// Here you can access your desired method

    Edit:

    As @rgettman suggest, you could use the overloaded version toArray(T[]) to avoid the cast. In this case you should provide an initialized array with size of keySet() beforehand.