Bugfixes

Update tests
Add javadoc comments

src/main/java/com/mattrixwv/matrix/exceptions/NullMatrixException.java

@@ -1,22 +1,57 @@
 //Matrix/src/main/java/com/mattrixwv/exceptions/NullMatrixException.java
 //Mattrixwv
 // Created: 06-30-22
-//Modified: 06-30-22
+//Modified: 08-08-24
 package com.mattrixwv.matrix.exceptions;
 
 
+/**
+ * Exception thrown to indicate that a null matrix has been illegally passed to a method
+ */
 public class NullMatrixException extends RuntimeException{
+	/**
+	 * Serialization identifier for this class.
+	*/
 	public static final long serialVersionUID = 1;
 
+
+	/**
+	 * Constructs a new {@code NullMatrixException} with {@code null} as its detail message.
+	 * The cause is not initialized and may subsequently be initialized by a call to {@link #initCause}.
+	 */
 	public NullMatrixException(){
 		super();
 	}
+
+	/**
+	 * Constructs a new {@code NullMatrixException} with the specified detail message.
+	 * The cause is not initialized and may subsequently be initialized by a call to {@link #initCause}.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method.
+	 */
 	public NullMatrixException(String message){
 		super(message);
 	}
+
+	/**
+	 * Constructs a new {@code NullMatrixException} with the specified cause and a detail message of
+	 * {@code (cause==null ? null : cause.toString())} (which typically contains the class and detail message
+	 * of {@code cause}). This constructor is useful for exceptions that are wrappers for other exceptions.
+	 *
+	 * @param throwable the cause (which is saved for later retrieval by the {@link #getCause()} method).
+	 *				(A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
+	 */
 	public NullMatrixException(Throwable throwable){
 		super(throwable);
 	}
+
+	/**
+	 * Constructs a new {@code NullMatrixException} with the specified detail message and cause.
+	 *
+	 * @param message the detail message, which is saved for later retrieval by the {@link #getMessage()} method.
+	 * @param throwable the cause (which is saved for later retrieval by the {@link #getCause()} method).
+	 *				(A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
+	 */
 	public NullMatrixException(String message, Throwable throwable){
 		super(message, throwable);
 	}