update

src/AssessmentPartFour.java

+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
 
 public class AssessmentPartFour {
 	
 	List<String> morseCode = new ArrayList<String>();
 	
-	public int loadMorseFromFile(String filename)
-	{
+	public int loadMorseFromFile(String filename) {
+	int number=0;
+	try (Scanner scanner = new Scanner(new File(filename))) { 
+	    // On boucle sur chaque champ détecté. 
+	    while (scanner.hasNextLine()) { 
+	        String line = scanner.nextLine(); 
+	        System.out.println(line); 
+	        morseCode.add(line);
+	        // Faites ici votre traitement. 
+	      System.out.println(morseCode.size());
+	      number=morseCode.size();
+	    } 
+	} catch (FileNotFoundException ex) { 
+	    System.out.println("Erreur --" + ex.toString()); 
+	}
 		
-		return 0;
+		return number;
 		
 		
 	}