有没有办法将所有元素组合到一个数组中？

let array1 = [1, 2, 3];
let array2 = [4, 5, 6];
let combinedArray = array1.concat(array2);
console.log(combinedArray); // 输出：[1, 2, 3, 4, 5, 6]

array1 = [1, 2, 3]
array2 = [4, 5, 6]
combinedArray = [*array1, *array2]
print(combinedArray) # 输出：[1, 2, 3, 4, 5, 6]

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        int[] array1 = {1, 2, 3};
        int[] array2 = {4, 5, 6};
        List<Integer> combinedList = new ArrayList<>();

        for (int element : array1) {
            combinedList.add(element);
        }

        for (int element : array2) {
            combinedList.add(element);
        }

        System.out.println(combinedList); // 输出：[1, 2, 3, 4, 5, 6]
    }
}