如何使用fileInputStream从文件内容制作频率表

import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

Map<String, Integer> frequencyTable = new HashMap<>();

String filePath = "path/to/your/file.txt";
try (FileInputStream fis = new FileInputStream(filePath)) {
    // 读取文件内容并制作频率表的代码将放在这里
} catch (IOException e) {
    e.printStackTrace();
}

byte[] buffer = new byte[1024]; // 缓冲区大小
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
    String content = new String(buffer, 0, bytesRead);
    String[] words = content.split("\\s+"); // 使用空格分割单词（可以根据实际需求修改分割规则）
    for (String word : words) {
        frequencyTable.put(word, frequencyTable.getOrDefault(word, 0) + 1);
    }
}

for (Map.Entry<String, Integer> entry : frequencyTable.entrySet()) {
    System.out.println(entry.getKey() + ": " + entry.getValue());
}