Java 函数参数和返回值的可变长数组类型如何定义？

// 参数类型为可变长数组
void myMethod(int... numbers) {}

// 返回类型为可变长数组
int[] myMethod() { return new int[0]; }

import java.util.Arrays;

public class SumNumbers {

    public static void main(String[] args) {
        int result = sumNumbers(1, 2, 3, 4, 5);
        System.out.println(result); // 输出：15
    }

    public static int sumNumbers(int... numbers) {
        return Arrays.stream(numbers).sum();
    }
}

import java.util.Random;

public class RandomNumbers {

    public static void main(String[] args) {
        int[] randomNumbers = generateRandomNumbers(5);
        System.out.println(Arrays.toString(randomNumbers)); // [12, 34, 56, 78, 90]
    }

    public static int[] generateRandomNumbers(int length) {
        Random random = new Random();
        int[] numbers = new int[length];
        for (int i = 0; i < length; i++) {
            numbers[i] = random.nextInt(100);
        }
        return numbers;
    }
}