List<float> = missing token?

Hi I just started up java recently, and I've been struggling on how to make a list of floating point numbers. The error I get is "dimensions expected after this token" but all examples on the web don't really point to a reason as to what or how i should approach this. THanks.

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Originally Posted by taiL

Hi I just started up java recently, and I've been struggling on how to make a list of floating point numbers. The error I get is "dimensions expected after this token" but all examples on the web don't really point to a reason as to what or how i should approach this. THanks.

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It's not quite clear what your problem is. But here are a few pointers.

First, you cannot store primitives in Java collections. What you need to do is to store the corresponding wrapper class. The corresponding wrapper to a float is a Float.

Second, List is an interface and not a concrete class. You can declare a variable of type List but you need to create and assign a concrete class object to it, like

List<Float> l = new ArrayList<Float>();

or

List<Float> l = new LinkedList<Float>();

ArrayList and LinkedList both implement the List interface (but have different properties).

Now you can start adding Float objects to the List<Float> you've created. In fact you can even add float primitives thanks to a Java feature called autoboxing. Autoboxing makes sure a primitive (like a float) gets converted to its corresponding wrapper class (like a Float) and back agan when it needs to be.