Question

我正在编写一个程序，它应该创建一个用户定义的数组，然后用随机变量填充它。

我认为我有用于询问用户数组尺寸的功能代码。它必须是介于5和20之间的Int，并且列大小不能与行大小相同。

问题是当我尝试打印零填充阵列时。我无法从Main（）调用数组所在的方法。

import java.util.Scanner;

public class Main {

public static void main(String args[]){

    Scanner keyboard = new Scanner(System.in);

    int row, column;


    //Ask user for row size
            System.out.println("Enter an integer ROW size from 5 to 20");
            row = keyboard.nextInt();
    //Checks if input is out of bounds
            while(row<5 || row>20){
                System.out.println("You did not enter a valid ROW size. Please try again!");
                row=keyboard.nextInt();}
    //Tells user row size
            System.out.println("ROW size: "+row);       
    //Ask user for column size
            System.out.println("\nEnter and integer COLUMN size from 5 to 20. Must be different from ROW size!");
            column = keyboard.nextInt();
    //Checks if input is out of bounds or repeated 
            while(column==row || column<5 || column>20){
                    System.out.println("You did not enter a valid COLUMN size. Please try again!");
                    column=keyboard.nextInt();}
    //Tells user column size
            System.out.println("COLUMN size: "+column);

            ProcessArray obj = new ProcessArray();
            ProcessArray.obj(firstArray);
                    }   
}


import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;

public class ProcessArray {

/*Main mainObject = new Main();
mainObject.initializeArray(firstArray); */


private int row, column;
private int firstArray[][], secondArray[][];

ProcessArray(int row, int column){
    this.row=row;
    this.column=column;
    //Set array sizes
    firstArray = new int[row][column];
    secondArray = new int[row][column];
}

//fill first array with zeros
    public int[][] initializeArray(int[][] firstArray, int[][] secondArray){

        Arrays.fill(firstArray, 0);
        Arrays.fill(secondArray, 0);

        System.out.println(firstArray);
        return firstArray;
    }
}

当我在Main（）中输入最后几行时，我得到了各种各样的错误。我有什么想法我做错了吗？还有，任何方法来清理/简化我的代码？

无法使用其他类中的数组

0 个答案: