java get sub array

To get a subarray (i.e. a portion of an array) in Java, you can use the copyOfRange method of the Arrays class.

Here is an example of how to get a subarray from an array:

int[] array = {1, 2, 3, 4, 5};
int[] subarray = Arrays.copyOfRange(array, 1, 3);
// subarray will contain [2, 3]

The copyOfRange method takes three arguments: the source array, the start index (inclusive) of the subarray, and the end index (exclusive) of the subarray. It returns a new array containing the elements of the source array within the specified range.

For example, in the code above, the subarray variable will be assigned a new array containing the elements at indices 1 and 2 of the array (i.e. the elements 2 and 3). The element at index 0 (i.e. 1) is not included, because the start index is 1, and the element at index 3 (i.e. 4) is not included, because the end index is 3.

Note that the copyOfRange method only works for arrays of primitive types (e.g. int, long, double, etc.) or reference types (e.g. String, Object, etc.). If you have an array of a custom class, you will need to use a different approach to create the subarray.