count words in react project

gistfile1.txt

package sx;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Main {

    public static void main(String[] args) throws Exception {
        Path p = Paths.get(System.getProperty( "user.home" ), "src");

        Map<String, Long> count = Files.walk(p)
                .filter(Files::isRegularFile)
                .filter(Main::filterExt)
                .flatMap(Main::lines)
                .map(Main::sanitizeLine)
                .flatMap(Main::splitLine)
                .collect(Collectors.groupingBy((s) -> s.toLowerCase(), Collectors.counting()));

        count.entrySet().stream()
                .sorted(Main.comparingByValue())
                .limit(100)
                .forEach(System.out::println);
    }

    static Comparator<Map.Entry<String, Long>> comparingByValue() {
        return (c1, c2) -> c2.getValue().compareTo(c1.getValue());
    }

    static Stream<String> splitLine(String line) {
        return Arrays.stream(line.split(" "))
                .filter(s -> !s.isEmpty())
                .filter(s -> !s.matches("^[0-9]+$"));
    }

    static String sanitizeLine(String line) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < line.length(); i++) {
            char c = line.charAt(i);
            if (0x30 <= c && c <= 0x39) sb.append(c);
            else if (0x41 <= c && c <= 0x5a) sb.append(c);
            else if (0x61 <= c && c <= 0x7a) sb.append(c);
            else if (0x5f == c) sb.append(c);
            else sb.append(' ');
        }
        return sb.toString();
    }

    static boolean filterExt(Path p) {
        String s = p.toString();
        if (s.endsWith(".ts")) return true;
        if (s.endsWith(".js")) return true;
        if (s.endsWith(".tsx")) return true;
        if (s.endsWith(".jsx")) return true;
        return false;
    }

    static Stream<String> lines(Path p) {
        try {
            return Files.readAllLines(p).stream();
        } catch (IOException e) {
            e.printStackTrace();
            return Stream.empty();
        }
    }
}