Can I declare and initialize an array with the same instruction in Java?

Question

Is there a way to do the following at the same time?

static final int UN = 0; // uninitialized nodes
int[] arr;

// ... code ...

arr = new int[size];
for (int i         


        

Answer 1

Well, in the case of objects (or primitives with autoboxing) you can do the following:

int count = 20;
final int UN = 0;
Integer[] values = Collections.nCopies(count, UN).toArray(new Integer[count]);

The downsides are that you have to use the object forms of the primitives (since the Collections must be of objects) and a separate List will be constructed and then thrown away. This would allow you to create the array as one statement however.