java二维数组怎么输入数据

int[][] arrayName = new int[rowCount][columnCount];

int[][] array = new int[3][4];

for (int i = 0; i < rowCount; i++) {
    for (int j = 0; j < columnCount; j++) {
        // 输入数据到 array[i][j]
    }
}

Scanner scanner = new Scanner(System.in);
array[i][j] = scanner.nextInt();

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int[][] array = new int[3][4];

        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 4; j++) {
                System.out.print("输入第 " + (i + 1) + " 行，第 " + (j + 1) + " 列的数据：");
                array[i][j] = scanner.nextInt();
            }
        }

        // 输出数组
        for (int[] row : array) {
            for (int element : row) {
                System.out.print(element + " ");
            }
            System.out.println();
        }
    }
}