从文件中读取输入并统计Java中的出现次数

File file = new File("文件路径");
FileReader fileReader = new FileReader(file);
BufferedReader bufferedReader = new BufferedReader(fileReader);

String line;
while ((line = bufferedReader.readLine()) != null) {
    // 处理每一行的内容
}

HashMap<String, Integer> countMap = new HashMap<>();
String[] words = line.split("\\s+"); // 使用空格分割单词
for (String word : words) {
    if (countMap.containsKey(word)) {
        countMap.put(word, countMap.get(word) + 1);
    } else {
        countMap.put(word, 1);
    }
}

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

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

public class FileWordCount {
    public static void main(String[] args) {
        try {
            File file = new File("文件路径");
            FileReader fileReader = new FileReader(file);
            BufferedReader bufferedReader = new BufferedReader(fileReader);

            String line;
            HashMap<String, Integer> countMap = new HashMap<>();
            while ((line = bufferedReader.readLine()) != null) {
                String[] words = line.split("\\s+");
                for (String word : words) {
                    if (countMap.containsKey(word)) {
                        countMap.put(word, countMap.get(word) + 1);
                    } else {
                        countMap.put(word, 1);
                    }
                }
            }

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

            bufferedReader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}