java二维数组里怎么任意输入

int[][] array = new int[rows][columns];

Scanner scanner = new Scanner(System.in);
for (int i = 0; i < rows; i++) {
    for (int j = 0; j < columns; j++) {
        array[i][j] = scanner.nextInt();
    }
}

scanner.close();

import java.util.Scanner;

public class Input2DArray {

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

        System.out.print("输入行数：");
        int rows = scanner.nextInt();

        System.out.print("输入列数：");
        int columns = scanner.nextInt();

        int[][] array = new int[rows][columns];

        // 输入元素
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                System.out.printf("输入第 %d 行、第 %d 列的元素：", i + 1, j + 1);
                array[i][j] = scanner.nextInt();
            }
        }

        // 关闭 Scanner
        scanner.close();

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