Java：有没有一种简单的方法来选择数组的子集？

Question

I have a String[] that has at least 2 elements.

I want to create a new String[] that has elements 1 through the rest of them. So.. basically, just skipping the first one.

Can this be done in one line? easily?

Answer 1

Use copyOfRange , available since Java 1.6:

Arrays.copyOfRange(array, 1, array.length);

Alternatives include:

• ArrayUtils.subarray(array, 1, array.length) from Apache commons-lang
• System.arraycopy(...) - rather unfriendly with the long param list.

Answer 2

String[] subset = Arrays.copyOfRange(originalArray, 1, originalArray.length);

See Also:

• java.util.Arrays

Answer 3

Stream API could be used too:

String[] array = {"A", "B"};

Arrays.stream(array).skip(1).toArray(String[]::new);

However, the answer from Bozho should be preferred.