На мой взгляд вроде всё правильно, подскажите так ли это?
package com.javarush.task.task19.task1907;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
/*
Считаем слово
*/
public class Solution {
public static void main(String[] args) {
try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));) {
String fileName = reader.readLine();
try (BufferedReader readerFile = new BufferedReader(new FileReader(fileName));) {
int count = 0;
StringBuilder builder = new StringBuilder();
while (readerFile.ready()) {
char str = (char) readerFile.read();
builder.append(str);
}
String str = builder.toString();
String[] array = str.split(" ");
for (String s : array) {
if (s.contains("world")) {
count++;
}
}
System.out.println(count);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}