如何在Java中实现数组向量？

public class Vector {
    private int[] elements;

    public Vector(int[] elements) {
        this.elements = elements;
    }

    public Vector add(Vector other) {
        int[] result = new int[elements.length];
        for (int i = 0; i< elements.length; i++) {
            result[i] = this.elements[i] + other.elements[i];
        }
        return new Vector(result);
    }

    public Vector subtract(Vector other) {
        int[] result = new int[elements.length];
        for (int i = 0; i< elements.length; i++) {
            result[i] = this.elements[i] - other.elements[i];
        }
        return new Vector(result);
    }

    public int dotProduct(Vector other) {
        int result = 0;
        for (int i = 0; i< elements.length; i++) {
            result += this.elements[i] * other.elements[i];
        }
        return result;
    }

    public Vector crossProduct(Vector other) {
        int[] result = new int[3];
        result[0] = this.elements[1] * other.elements[2] - this.elements[2] * other.elements[1];
        result[1] = this.elements[2] * other.elements[0] - this.elements[0] * other.elements[2];
        result[2] = this.elements[0] * other.elements[1] - this.elements[1] * other.elements[0];
        return new Vector(result);
    }

    public int[] getElements() {
        return elements;
    }

    public void setElements(int[] elements) {
        this.elements = elements;
    }
}