How to initialize a static array?

java arrays static playing-cards

Jeremy S. · Aug 8, 2011 · Viewed 140.5k times · Source

I have seen different approaches to define a static array in Java. Either:

String[] suit = new String[] {
  "spades", 
  "hearts", 
  "diamonds", 
  "clubs"  
};

...or only

String[] suit = {
  "spades", 
  "hearts", 
  "diamonds", 
  "clubs"  
};

or as a List

List suit = Arrays.asList(
  "spades", 
  "hearts", 
  "diamonds", 
  "clubs"  
);

Is there a difference (except for the List definition of course)?

What is the better way (performance wise)?

Answer

If you are creating an array then there is no difference, however, the following is neater:

String[] suit = {
  "spades", 
  "hearts", 
  "diamonds", 
  "clubs"  
};

But, if you want to pass an array into a method you have to call it like this:

myMethod(new String[] {"spades", "hearts"});

myMethod({"spades", "hearts"}); //won't compile!