java - 尝试从另一个类的随机数中打印出数组

Question

我基本上已经完成了这段代码，但是当我从彩票类中的数组中打印出数字时，我得到了一堆看似乱码的内容。我该如何解决这个问题？

import java.util.Scanner;
public class Hw5pr2
{
    public static void main(String[] args)
    {
    Scanner kb = new Scanner(System.in);
    int[] rand = new int[5];
    System.out.println("please enter 5 number");
    for (int a = 0; a<rand.length; a++)
    {
    rand[a] = kb.nextInt();
    }
    Lottery k = new Lottery();
    System.out.print("your number are: ");
    for (int a = 0; a < rand.length; a++)
    {
        System.out.print(rand[a]+",");
    }
    System.out.print("The Winning numbers are: ");
    for (int a = 0; a < rand.length; a++)
    {
        System.out.print(k.getArray()+",");
    }
    System.out.println("you have " + k.RanInput(rand) + " matching number!!");
    }
}



import java.util.Random;
public class Lottery
{
private int[] lotteryNumbers = new int[5];
    public Lottery()
    {
    Random rand = new Random();
    for (int a = 0; a<lotteryNumbers.length; a++)
        {
        lotteryNumbers[a] = rand.nextInt(9)+1;
        }
    }
    public int RanInput(int[] Inran)
    {
    int b = 0;
    for (int a = 0; a<lotteryNumbers.length; a++)
        {
        if (lotteryNumbers[a] == Inran[a])
            {
            b++;
            }
        }
    return b;
    }
    public int[] getArray()
    {
    return lotteryNumbers;
    }
}

Answer 1

for (int a = 0; a < rand.length; a++)
{
    System.out.print(k.getArray()+","); //k.getArray() which returns you an entire array
}

您正在尝试打印整个数组。这就是为什么它可能会向您显示引用。您可以将该数组存储在临时数组中并打印该数组的内容。

<小时/>

你可以尝试这样做:

int[] winningNum = k.getArray();
for (int a = 0; a < winningNum.length; a++)
    System.out.print(winningNum[a] + ",");