Write merge sort in Java language

A sample code for merge sort written in the Java language may be as follows: public class MergeSort {

public static void mergeSort(int[] array) {
    if (array.length > 1) {
        int[] left = leftHalf(array);
        int[] right = rightHalf(array);

        mergeSort(left);
        mergeSort(right);

        merge(a