我的字符数组显示它的内存位置，我不知道为什么[重复]

Question

我的程序声明了两个大小为26的字符数组(char[26])，从包含a-z和a-z的字符串中随机获取字母，并使用它们填充这两个数组。最后，它从两个数组中获取每个小写字母，然后使用它们填充一个ArrayList，按字母顺序排序，然后显示（或者至少应该这样做）。我不是完全确定问题是什么，更不知道如何解决它，所以任何帮助将是感激的。

package HW_5;
import java.util.Random;
import java.util.Arrays;
import java.util.ArrayList;

public class HW_5
{
    static char [] first = new char [26];
    static char [] second = new char [26];
    static String alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    static Random r = new Random();
    static char letter = ' ';

    public static void main(String[] args)
    {
        Character [] third;
        Random_Alphabetic_Generator();
        third = Lowercase_Container();
        Alphabetical_Order(third);


    }

    public static void Random_Alphabetic_Generator()
    {


            for(int i=0; i < first.length; i++)
            {

                letter = alphabet.charAt((int) r.nextInt(alphabet.length()));
                first[i] = letter;
            }
            for(int i=0; i < second.length; i++)
            {
                letter = alphabet.charAt((int) r.nextInt(alphabet.length()));
                second[i] = letter;
            }


            System.out.println("First Array Contains: " + Arrays.toString(first));
            System.out.println("Second Array Contains: " + Arrays.toString(second));
    }

    public static Character [] Lowercase_Container()
    {

         ArrayList<Character> container = new ArrayList<Character>();

         for(int i = 0; i < first.length; i++)
         {
             if(first[i] == Character.toLowerCase(first[i]))
             {
                container.add(first[i]);
             }
         }
         for(int i = 0; i < second.length; i++)
         {
             if(second[i] == Character.toLowerCase(second[i]))
             {
                container.add(second[i]);
             }   
         }

         Character [] third = new Character[container.size()];
         container.toArray(third);


         return third;
    }

    public static void Alphabetical_Order(Character [] third)
    {
        java.util.Arrays.sort(third);
        System.out.println("All lowercase letters from the First and Second Arrays: " + third);
    }

}

Answer 1

您需要使用arrays.toString如下所示：

 System.out.println("All lowercase letters from the First and Second Arrays: " + Arrays.toString(third));