如何计算数组中用户输入的字符数？

Question

我有一个Java作业，我需要读入一个字符，然后计算该字符在数组中出现的次数。这是我目前所掌握的。

import javax.swing.JOptionPane;

public class ArraySring
{   
    public static void main(String args[])
    {
        String userChar;

        userChar = JOptionPane.showInputDialog("Enter a character");


        String dow[] = {
                        "Monday",
                        "Tuesday",
                        "Wednesday",
                        "Thursday",
                        "Friday",
                        "Saturday",
                        "Sunday"
                       };

        for(int x=0; x<7; x++) {
            System.out.println(dow[x]);
        }
        System.out.println();
    }
} // end ArrayStrings

Answer 1

给你：

public static void main(String args[]) {
    char userChar = JOptionPane.showInputDialog("Enter a character").toLowerCase().charAt(0);
    int count = 0;
    String dow[] = // ...

    for (String str : dow)
        for (char ch : str.toLowerCase().toCharArray())
            if (ch == userChar)
                count++;

    System.out.println(count);
}