В чем проблема?
package com.javarush.task.task18.task1823;
import java.io.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/*
Нити и байты
*/
public class Solution {
public static Map<String, Integer> resultMap = new HashMap<String, Integer>();
public static void main(String[] args) throws IOException, InterruptedException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = null;
while (!(fileName = reader.readLine()).equals("exit")) {
ReadThread thread = new ReadThread(fileName);
thread.start();
thread.join();
}
}
public static class ReadThread extends Thread {
public ReadThread(String fileName) throws IOException {
this.fileName = fileName;
FileInputStream fileInputStream = new FileInputStream(fileName);
while (fileInputStream.available() > 0) {
array.add(fileInputStream.read());
fileInputStream.close();
}
//implement constructor body
}
// implement file reading here - реализуйте чтение из файла тут
private String fileName = null;
ArrayList<Integer> array = new ArrayList<>();
public void run() {
int element = array.get(0);
for (Integer x : array) if (Collections.frequency(array, x) > Collections.frequency(array, element)) element = x;
resultMap.put(fileName, element);
}
}
}