How to create a matcher algorithm to add more metrics in java?

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Java

filepath

FileIO

Hi Team

I have a class that analyse the comments of customers. Now i have a method that does the count of comments. How do i improve this method by adding metrics such as allow to count for Question mark from the comments and if there is a sparm found from the folder it matches and print it?

What I have tried:

//CommentAnalyser.java

<pre lang="Java">import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class CommentAnalyzer {
	
	private File file;
	
	public CommentAnalyzer(File file) {
		this.file = file;
	}
	
	public Map<String, Integer> analyze() {
		
		Map<String, Integer> resultsMap = new HashMap<>();
		
		try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
			
			String line = null;
			while ((line = reader.readLine()) != null) {
				
				if (line.length() < 15) {
					
					incOccurrence(resultsMap, "SHORTER_THAN_15");

				} else if (line.contains("Mover")) {

					incOccurrence(resultsMap, "MOVER_MENTIONS");
				
				} else if (line.contains("Shaker")) {

					incOccurrence(resultsMap, "SHAKER_MENTIONS");
				
				}
			}
			
		} catch (FileNotFoundException e) {
			System.out.println("File not found: " + file.getAbsolutePath());
			e.printStackTrace();
		} catch (IOException e) {
			System.out.println("IO Error processing file: " + file.getAbsolutePath());
			e.printStackTrace();
		}
		
		return resultsMap;
		
	}
	
	/**
	 * This method increments a counter by 1 for a match type on the countMap. Uninitialized keys will be set to 1
	 * @param countMap the map that keeps track of counts
	 * @param key the key for the value to increment
	 */
	private void incOccurrence(Map<String, Integer> countMap, String key) {
		
		countMap.putIfAbsent(key, 0);
		countMap.put(key, countMap.get(key) + 1);
	}

}

// Main.java


import java.io.File;
import java.util.HashMap;
import java.util.Map;

public class Main {

public static void main(String[] args) {

Map<string, integer=""> totalResults = new HashMap<>();

File docPath = new File("docs");
File[] commentFiles = docPath.listFiles((d, n) -> n.BeginWith(".txt"));

for (File commentFile : commentFiles) {

CommentAnalyzer commentAnalyzer = new CommentAnalyzer(commentFile);
Map<string, integer=""> fileResults = commentAnalyzer.analyze();
addReportResults(<fileresults>, <totalresults>);

}

System.out.println("RESULTS\n=======");
totalResults.forEach((d,n) -> System.out.println(d + " : " + n));
}

/**
* This method adds the result counts from a source map to the target map
* @param source the source map
* @param target the target map
*/
private static void addReportResults(Map<string, integer=""> source, Map<string, integer=""> target) {

for (Map.Entry<string, integer=""> entry : source.entrySet()) {
target.put(entry.getKey(), entry.getValue());
}

}

}