First blood. Added all files.

.classpath

+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/5"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>assessment01-18</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

bin/.gitignore

+/AssessmentPartOne.class
+/AssessmentPartOneTest.class
+/Hub.class

src/AssessmentPartOne.java

+
+public class AssessmentPartOne {
+
+	public int biggestOfThree(int num1, int num2, int num3)
+	{
+		// 01 - A Gentle Start
+		// Debug this method so it passes the unit test.
+		// Add comments beside any changes you make
+		
+		if (num1>num2)				  //Changed the (less than) < sign to a (greater than) > sign.
+		{
+			if (num3>num1)
+			{
+				return num3;
+			}
+			else
+			{
+				return num1;
+			}
+		}
+		else 
+		{
+			if (num3>num2)
+			{
+				return num3;						
+			}
+			else
+			{
+				return num2;			//Added a semicolon ; after num2.
+			}
+		}
+	}
+	
+	public int sumNumbersBetween(int start, int end)
+	{
+		// 02 - Adding Across A Range
+		// Complete this method so that it adds together all
+		// the integers between start and end, but not including 
+		// start or end
+		// This method should only deal with 0 and positive integers
+		// This method should return -1 if it cannot calculate the result
+		
+		// You should comment your code explaining what each part does
+		
+		int sumOfSquares = 0;		// Integer used for the result.
+		int wrongsum = -1; 		    // Integer which will return -1, will be used if result can't be calculated.
+		
+		for(int i=start+1; i<end; i++) { //Using a for loop to iterate through the numbers, excluding start and end.
+			sumOfSquares += i;			 //sumOfSquares is equal to sumOfSquares plus i.
+										 //Integer i is the number between the start and the end numbers, iterated through the loop.
+		}
+		
+		if (start < 0 || end < 0) { // If either start or end are less than zero, following code will run.
+			return wrongsum;		// Returns wrongsum, which is -1, as it cannot calculate the result.
+		}
+		if (sumOfSquares <= 0) {    // If sumOfSquares is less than or equal to 0, following code will run.
+			return wrongsum;		// Returns wrongsum, which is -1, as it cannot calculate the result.
+		}
+		
+		return sumOfSquares;		// Returns the final result.
+	}
+	
+}

src/AssessmentPartOneTest.java

+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class AssessmentPartOneTest {
+
+	public static AssessmentPartOne test;
+	
+	@BeforeAll
+	static void setUpBeforeClass() throws Exception {
+		test = new AssessmentPartOne();
+	}
+
+	@ParameterizedTest
+	@DisplayName("Testing biggestOfThree")
+	@CsvSource({
+					"1,2,3,3",
+					"4,2,3,4",
+					"1,5,3,5",
+					"8,7,7,8",
+					"1,5,7,7"
+	})
+	void testCountVowels(int num1, int num2, int num3, int biggest) {
+		assertEquals(biggest, test.biggestOfThree(num1, num2, num3));
+	}
+
+	@ParameterizedTest
+	@DisplayName("Testing sumNumbersBetween")
+	@CsvSource({
+					"1,4,5",
+					"1,6,14",
+					"1,2,-1",
+					"-5,8,-1",
+					"5,3,-1",
+					"3,-1,-1"
+	})
+	void testSumNumbersBetween(int num1, int num2, int sum) {
+		assertEquals(sum, test.sumNumbersBetween(num1, num2));
+	}
+}

src/Hub.java

+
+public class Hub {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+	}
+
+}