StringMatchingOld

import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;
import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
public class StringMatchingOld {
    private static final Logger LOG = LoggerFactory.getLogger(StringMatchingOld.class);

    public void match(String match, String dirPath, String fileNamePrefix) {
        LOG.info("Match=" + match);
        LOG.info("DirPath=" + dirPath);
        LOG.info("FileNamePrefix=" + fileNamePrefix);

        LOG.info("*****************START*****************");

        try {
            long start = System.nanoTime();
            final Counter fileCounter = new Counter();

            File inputDir = new File(dirPath);
            File[] files = inputDir.listFiles(new FileFilter() {

                @Override
                public boolean accept(File pathname) {
                    return pathname.isFile() && pathname.getName().startsWith(fileNamePrefix);
                }
            });

            for (File file : files) {
                LOG.info("Searching in " + file.getAbsolutePath() + " ...");
                BufferedReader br = new BufferedReader(new FileReader(file));
                String line = null;
                while ( (line = br.readLine()) != null) {
                    if (line.contains(match)) {
                        LOG.info("Found match in file=[" + file.getAbsolutePath() + "]");
                        fileCounter.add();
                        break;
                    }
                }

                br.close();
            }

            LOG.info("Found " + fileCounter.get() + " files with match");
            long end = System.nanoTime();
            LOG.info("Time: " + (end - start)/1000000 +  " ms");
        } catch (IOException e) {
            throw new RuntimeException(e);
        };

        LOG.info("*****************END*****************");
    }

    private static final class Counter {
        int counter = 0;

        public void add() {
            counter++;
        }

        public int get() {
            return counter;
        }
    }
}