我可以迭代Java中for循环中定义的数组吗？

Question

Does Java offer a way to do something like the following without resorting to declaring the array in a separate variable?

for (String s : {"HEY", "THERE"}) {
    // ...
}

The best I can come up with is:

for (String s : new ArrayList<String>() {{ add("HEY"); add("THERE"); }}) {
    // ...
}

which isn't pretty.

Answer 1

Well, the least you can do is this:

for (String s : new String[]{"HEY", "THERE"}) {
    // ...
}

Since Array s are "iterable" in Java (although not implementing Iterable ), you could iterate over an Array instead of an ArrayList , which could also be in-line initialized.

Answer 2

for (String s : Arrays.asList("HEY", "THERE")) {
    // ...
}

Not sure why you'd want to do this, but there you have it.