Fixed first error?

src/Author.java

@@ -4,6 +4,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
+@SuppressWarnings("unchecked")
 public class Author extends Person {
     private List books;
 
@@ -28,8 +29,9 @@ public void addBook(String book) {
         books.add(book);
     }
 
+
     @Override
-    public String sortName() {
+    public String fullName() {
         return String.format("%s, %s", lastName, firstName);
     }
 }

src/Main.java

@@ -1,4 +1,6 @@
+@SuppressWarnings("deprecation")
 public class Main {
+
     public static void main(String[] args) {
         Author author = new Author("Sandi", "Metz");
 

src/Person.java

@@ -1,6 +1,7 @@
 /**
  * This source file is subject to the license that is bundled with this package in the file LICENSE.
  */
+
 public class Person {
     protected String firstName;
     protected String lastName;