public void Update( int id, String username, String password ){
		try{
			Connection con = DriverManager.getConnection("jdbc:hsqldb:hsql://localhost/mydatabase", "SA", "");
			PreparedStatement statement = con.prepareStatement("UPDATE PROGRAM SET NAME = ? , PASSWORD = ? WHERE ID = ?");
			
			statement.setString(1, username);
			statement.setString(2, password);
			statement.setInt(3, id);
			
			int rowsAffected = statement.executeUpdate();
			
			System.out.println( rowsAffected );
			
		    statement.close();
		    con.close();
		}
		catch( SQLException e ){
			
		}
		
		list = getList();
		fireTableDataChanged();
		
	}