java: how can I create a dynamic array without forcing the type of the values?

Question

I need to create a dynamic array in Java, but the values type differ from String to Int to float. how can I create a dynamic list that I don't need to give it in advanced the type of the values?

The keys just need to be ascending numbers (1,2,3,4 or 0,1,2,3,4)

I checked ArrayList but it seems that I have to give it a fixed type for the values.

thanks!

Answer 1

You can have an array or an ArrayList of Objects which will allow you to contain String, int, and float elements.

Answer 2

You can use this:

List<Object> myList = new ArrayList<Object>();

Integer i = 1;
Double d = 1.2;
String s = "Hello World";

myList.add(i);
myList.add(d);
myList.add(s);