completed

src/AssessmentPartFour.java

 import java.util.ArrayList;
 import java.util.List;
+import java.io.*;
+import java.util.Scanner;
 
-public class AssessmentPartFour {
+public class AssessmentPartFour 
+{
 	
-	List<String> morseCode = new ArrayList<String>();
+	List<String> morseCode = new ArrayList<String>(); //creates an arraylist called morseCode that can handle strings
 	
-	public int loadMorseFromFile(String filename)
+	
+	public int loadMorseFromFile(String filename) 
 	{
+		File file = new File(filename); // creates a instance of a file 
+		morseCode.clear(); // clears the contents of the array "morseCode
 		
-		return 0;
-		
-		
+		Scanner sc = null; // creates a scanner called sc and assigns it a value of null
+		try //creates a try block and attempts to run the code inside it
+		{
+			sc = new Scanner(file); //assigns the value of file to the scanner sc
+		} catch (FileNotFoundException e) // if an exception is thrown from assigning the value of "file" to the scanner sc, 
+		{
+			// TODO Auto-generated catch block
+			e.printStackTrace(); // if an exception is met, prints the stack trace of the instance ready for debugging
+		}
+		String lineFromFile; // creates a string called lineFromFile
+		while (sc.hasNextLine())  //creates a while loop as long as sc has another line waiting
+		{	
+			lineFromFile = sc.nextLine(); // makes lineFromFile equal to the 
+			morseCode.add(lineFromFile); //adds the value assigned to lineFromFile to the array morseCode
+		}
+		return morseCode.size(); //returns the size of the array string morseCode
 	}
-	
-	public String translateMorse()
+	//////////////////////////////////////////////
+	public String translateMorse(String filename)
 	{
-		return "";
-	}
-	
-	
-	
-
-}
+		File file = new File(filename);  //creates an instance of a file
+		morseCode.clear(); // clears the contents of morseCode
+		//creates an array string containing the alphabet in morse code
+		String[] morse = {".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--","-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--..","/"};  
+		String[] alphabet = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"," "};
+		//creates an array string containing the alphabet in lower case
+		Scanner sc = null; //Assigns a value of null to the scanner "sc"
+		try //creates a try block and attempts to run the code inside it
+			{
+				sc = new Scanner(file); // creates a new scanner and assigns the value of "file" to it
+			} 
+				catch (FileNotFoundException e) // if the scanner cannot assign the value of "file" , run the following
+			{
+				// TODO Auto-generated catch block
+				e.printStackTrace(); // if an exception is met, prints the stack trace of the instance ready for debugging
+			}
+		
+		String lineFromFile; //creates a string called lineFromFile
+		while (sc.hasNextLine()) //creates a while loop aslong as as sc has another line waiitng
+		{
+			lineFromFile = sc.nextLine(); //stores the next line in the scanner sc
+			morseCode.add(lineFromFile); // assigns the value of lineFromfile to morsecode
+		}
+		String message=""; //creates a string called message and assigns it nothing
+		for (int i = 0; i < morseCode.size();i++)  //creates a for loop where i = 0 and runs for the size of the array morseCode
+		{
+			for (int x = 0; x < alphabet.length; x++) //creates a nested for loop where x = 0 and runs for the the length of alphabet.length (so 26 times)
+			{
+				if (morseCode.get(i).equals(morse[x]))  // if the i'th element of morsecode is equal to the x 'th value of the array morse
+				{
+					morseCode.set( i, alphabet[x] ); //  sets the value of i and the x'th value of alphabet ine the array morseCode
+					message =  message + alphabet[x]; // makes message equal to message + the x'th value of alphabet
+				}
+			}
+		}
+		return message; //returns the value of message
+	}	
+}
\ No newline at end of file

src/AssessmentPartFourTest.java

@@ -27,6 +27,7 @@ class AssessmentPartFourTest {
 	})	
 	void testEnryptedCharacter(String filename, int count) {
 		assertEquals(count,test.loadMorseFromFile(filename));
+		test.morseCode.clear();
 	}
 
 	@ParameterizedTest
@@ -38,14 +39,17 @@ class AssessmentPartFourTest {
 					"test4.txt,13,yippee did it"
 	})
 	void testEncryptedString(String filename, int count, String message) {
+		test.morseCode.clear();
 		int cc = test.loadMorseFromFile(filename);
 		if (cc==count)
 		{
-			assertEquals(message, test.translateMorse());
+			assertEquals(message, test.translateMorse(filename));
+			
 		}
 		else
 		{
 			fail("File failed to load");
 		}
+		test.morseCode.clear();
 	}
-}
+}
\ No newline at end of file