如何在Java中编写像splice这样的方法

public class SpliceUtil {
    public static int[] splice(int[] originalArray, int insertIndex, int[] insertArray) {
        // 实现splice方法的逻辑
        // ...
    }
}

public class SpliceUtil {
    public static int[] splice(int[] originalArray, int insertIndex, int[] insertArray) {
        int originalLength = originalArray.length;
        int insertLength = insertArray.length;
        int newLength = originalLength + insertLength;

        int[] newArray = new int[newLength];

        // 将原始数组的元素复制到新数组中，直到插入位置
        System.arraycopy(originalArray, 0, newArray, 0, insertIndex);

        // 将插入的元素数组复制到新数组中
        System.arraycopy(insertArray, 0, newArray, insertIndex, insertLength);

        // 将原始数组剩余的元素复制到新数组中
        System.arraycopy(originalArray, insertIndex, newArray, insertIndex + insertLength, originalLength - insertIndex);

        return newArray;
    }
}

public class Main {
    public static void main(String[] args) {
        int[] originalArray = {1, 2, 3, 4, 5};
        int[] insertArray = {6, 7, 8};
        int insertIndex = 2;

        int[] newArray = SpliceUtil.splice(originalArray, insertIndex, insertArray);

        // 输出新数组的内容
        for (int num : newArray) {
            System.out.print(num + " ");
        }
        // 输出结果：1 2 6 7 8 3 4 5
    }
}