Updated from origin/main

src/main/java/hhn/temp/project/provider/Database.java

@@ -6,4 +6,5 @@ import java.sql.SQLException;
 
 public interface Database {
   public void connect() throws SQLException, IOException;
+  public void close() throws SQLException;
 }

src/main/java/hhn/temp/project/provider/SimpleDatabaseManager.java

@@ -26,7 +26,7 @@ public class SimpleDatabaseManager<E> implements DatabaseManager<E> {
 
   @Override
   public void saveObject(E object) {
-
+g
   }
 
   @Override
@@ -38,4 +38,11 @@ public class SimpleDatabaseManager<E> implements DatabaseManager<E> {
   public void connect() throws SQLException, IOException {
     connection = DriverManager.getConnection("jdbc:mysql://sql7.freesqldatabase.com/sql7810540?user=sql7810540&password=mXdJCFtDZz");
   }
+
+  @Override
+  public void close() throws SQLException {
+    if (connection != null) {
+      connection.close();
+    }
+  }
 }