added solution

src/main/java/core/basesyntax/FileWork.java

@@ -1,8 +1,66 @@
 package core.basesyntax;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Arrays;
+
 public class FileWork {
     public String[] readFromFile(String fileName) {
-        //write your code here
-        return null;
+
+        File file = new File(fileName);
+        BufferedReader bufferedReader;
+        try {
+            bufferedReader = new BufferedReader(new FileReader(file));
+        } catch (FileNotFoundException e) {
+            throw new RuntimeException("File not found ",e);
+        }
+        StringBuilder stringBuilder = new StringBuilder();
+        int value;
+        try {
+            value = bufferedReader.read();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+        if (value == -1) {
+            return new String[0];
+        }
+        try {
+            while (value != -1) {
+                stringBuilder.append((char) value);
+                value = bufferedReader.read();
+            }
+
+        } catch (FileNotFoundException e) {
+            System.out.println("File not found " + e);
+        } catch (IOException e) {
+            System.out.println("Can't read file " + e);
+        }
+
+        String[] textArray = stringBuilder.toString().replaceAll("\n", " ").toLowerCase()
+                .split(" ");
+        int counterW = 0;
+
+        for (String word: textArray) {
+
+            if (word.charAt(0) == 'w') {
+                counterW++;
+            }
+        }
+        String[] wordArray = new String[counterW];
+        int indexWordArray = -1;
+
+        for (String word: textArray) {
+            if (word.charAt(0) == 'w') {
+                indexWordArray++;
+                wordArray[indexWordArray] = word.replaceAll("[^a-zA-Z]", "");
+            }
+        }
+        Arrays.sort(wordArray);
+        return wordArray;
     }
 }
+