为随机 2D java 数组问题创建用户输入 - OutOfBoundsException

Creating user input for randomized 2D java array issue - OutOfBoundsException

正在尝试创建一个采用用户输入的行和列的二维数组。然后数组中的数字从 0 到 100 随机化。我收到以下错误:

为数组输入行:3

为数组输入列:2

线程“main”中的异常java.lang.ArrayIndexOutOfBoundsException:索引 3 超出长度 3 的范围 在 test2.main(test2.java:17)

这是我的代码:

import java.lang.Math;
import java.util.Scanner;

public class test2 {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.print("Enter rows for the array: ");
        int rows = scan.nextInt();
        System.out.print("Enter columns for the array: ");
        int columns = scan.nextInt();

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

        for (rows = 0; rows < myArray.length;rows++) {
            for (columns = 0; columns < myArray.length; columns++)
            myArray[rows][columns] = (int) (Math.random()*100);
            System.out.print(myArray[rows][columns] + "\t");
        }
    }
}

您应该使用单独的变量来 运行 循环。

public class Random {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    System.out.print("Enter rows for the array: ");
    int rows = scan.nextInt();
    System.out.print("Enter columns for the array: ");
    int columns = scan.nextInt();

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

    for (int row = 0; row < rows; row++) {
        for (int col = 0; col < columns; col++) {
            myArray[row][col] = (int) (Math.random() * 100);
            System.out.print(myArray[row][col] + "\t");
        }
    }
}

}