for performance reasons I need to use arrays to store data. I implemented this in a generic fashion like this (see this answer):
import java.lang.reflect.Array;
public class SimpleArray<T> {
private T[] data;
@SuppressWarnings("unchecked")
public SimpleArray(Class<T> cls, int size) {
this.data = (T[]) Array.newInstance(cls, size);
}
public T get(int i) {
return data[i];
}
}
The problem is that I need the involved Class<?>
es. However, I might have a more complex class hierarchy containing generics:
public class Outer<T> {
public class Inner {
}
}
I would like to initialize the array as I would with an ordinary class:
SimpleArray<Integer> intArray = new SimpleArray<>(Integer.class, 10);
intArray.get(0);
SimpleArray<Outer<Integer>> outerArray;
// how to initialize this?
SimpleArray<Outer<String>.Inner> innerArray;
// how to initialize this?
I read the post on how to (not) get the Class
of something generic (here) but the bottom-line seems to be that everything is type-safety related syntactic sugar.
My question is the following: How can I create instances of the SimpleArray
classes above while avoiding as much ugliness as possible?