统计Java中文本文件中字符的出现次数

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class CharacterCount {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt"; // 替换为实际的文件路径

        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            String line;
            Map<Character, Integer> charCountMap = new HashMap<>();

            while ((line = reader.readLine()) != null) {
                for (char c : line.toCharArray()) {
                    if (charCountMap.containsKey(c)) {
                        charCountMap.put(c, charCountMap.get(c) + 1);
                    } else {
                        charCountMap.put(c, 1);
                    }
                }
            }

            // 输出字符出现次数
            for (Map.Entry<Character, Integer> entry : charCountMap.entrySet()) {
                System.out.println("字符 '" + entry.getKey() + "' 出现次数：" + entry.getValue());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}