Do you need = new String[] in array? [duplicate]

Question

String[] months = {"January", "Febuary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

System.out.println(Arrays.toString(months));

String[] months = new String[] {"January", "Febuary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

System.out.println(Arrays.toString(months));

These two codes gave the same result. So I'm wondering which is an appropriate way to write.

@NicholasK Please don't add unrelated tags. It is completely irrelevant what type of Array OP uses here. — Tom
– Tom, Commented Nov 1, 2018 at 10:45
@Sir.Hedgehog This question is not about using new for strings. It's about using new for arrays. — khelwood
– khelwood, Commented Nov 1, 2018 at 11:53
@khelwood one applies to the other. he just needs to read it and think about it a bit — Sir. Hedgehog
– Sir. Hedgehog, Commented Nov 1, 2018 at 12:17

khelwood · Accepted Answer · 2018-11-01 10:40:43Z

4

String[] arr = { "Alpha", "Beta" };

and

String[] arr = new String[] { "Alpha", "Beta" };

do exactly the same thing. The first is a shortcut which is allowed when you are declaring an array variable and initialising it in the same line.

However, in other cases, you must use new String[] to declare the type of the array you are creating.

String[] arr;
arr = { "Alpha", "Beta" }; // this will not compile
arr = new String[] { "Alpha", "Beta" }; // this will compile

answered Nov 1, 2018 at 10:40

khelwood

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