public void deleteBatch(Batch batch) throws SQLException{
			PreparedStatement stmt = null;
			ResultSet rs = null;
			try {
				String sql = "DELETE FROM batches WHERE id = ?";
				stmt = db.getConnection().prepareStatement(sql);
				stmt.setInt(1, batch.getId());
				
				if (stmt.executeUpdate() == 1) {
					//Success
				} else {
					//Fail
				}
			} catch (SQLException e) {
				e.printStackTrace();
			} finally {
				if (stmt != null) stmt.close();
				if (rs != null) rs.close();
			}
		}