Added new constructor to UserDatabase

Author: parmism

src/main/java/UserDatabase.java

@@ -4,7 +4,18 @@
 public class UserDatabase implements UserExists, UserRetriever, UserCreator, IRetrieveList{
     File accounts;
     List<User> accountList;
-    public UserDatabase(File accounts){
+    public UserDatabase(){
+        this.accounts = new File("TestUserDatabase3.csv");
+        this.accountList = this.getList();
+    }
+    public UserDatabase(File accounts) {
+        if (!accounts.exists()) {
+            try {
+                accounts.createNewFile();
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
         this.accounts = accounts;
         this.accountList = this.getList();
     }