When to use Enum / Int Constants

Question

I have a question that when should we use Enum and when should we use a final constants?

I know that it has been discussed at Enums and Constants. Which to use when? tho

Answer 1

Enums are:

• Safer - more resilient to change.

  A change to the list of enums is more likely to cause compile-time errors if the change was mistaken.

• Clearer - most developers will instantly understand that the items are connected in some way.

  enum { A, B, C } is much more obviously a group of items with a connection than psfi A = 0; psfi B = 1; psfi C = 2;

So unless you have a measurable advantage to using public static final int, be it in memory footprint or speed, you should always use enum.

See When is optimisation premature?