Added a placeholder method to delete objects from the database.

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

@@ -48,7 +48,7 @@ public class SimpleDatabaseManager<E> implements DatabaseManager<E> {
   }
 
   @Override
-  public void saveObjects(Collection<E> objects) throws IOException, SQLException {
+  public void saveObjects(Collection<E> objects) throws SQLException {
     for (E obj : objects) {
       saveObject(obj);
     }
@@ -56,8 +56,8 @@ public class SimpleDatabaseManager<E> implements DatabaseManager<E> {
 
 
   @Override
-  public Collection<E> getObjects() throws ExecutionControl.NotImplementedException {
-    throw new ExecutionControl.NotImplementedException("Not Implemented!");
+  public Collection<E> getObjects() throws SQLException {
+    return null;
   }
 
   @Override
@@ -103,7 +103,12 @@ public class SimpleDatabaseManager<E> implements DatabaseManager<E> {
   }
 
   @Override
-  public void connect() throws SQLException, IOException {
+  public void deleteObject(int id) throws SQLException {
+    throw new SQLException("Not implemented yet");
+  }
+
+  @Override
+  public void connect() throws SQLException {
     connection = DriverManager.getConnection("jdbc:mysql://sql7.freesqldatabase.com/sql7810540?user=sql7810540&password=mXdJCFtDZz");
   }