[NP] Line Processor

import java.io.*;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;

class LineProcessor {

    List<String> lines;

    public LineProcessor() {
        lines= new ArrayList<>();
    }

    public int countOcc(String line, char c){
        int total=0;
        for(char l : line.toCharArray()){
            if(l==c)
                total++;
        }
        return total;
    }


    public void readLines(InputStream in, PrintStream out, char a) {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
        lines = bufferedReader.lines().map(i-> i.toLowerCase()).collect(Collectors.toList());

        Comparator<String> comparator = Comparator.comparing(str->countOcc(str,a));

        PrintWriter printWriter = new PrintWriter(out);

        String max = lines.stream().max(comparator.thenComparing(Comparator.naturalOrder())).get();
        printWriter.println(max);
        printWriter.flush();

    }
}

public class LineProcessorTest {

    public static void main(String[] args) {
        LineProcessor lineProcessor = new LineProcessor();


        lineProcessor.readLines(System.in, System.out, 'a');
    }
}