private void connectDB(){
		try{
			Class.forName("oracle.jdbc.OracleDriver");
			dbConnection = DriverManager.getConnection("jdbc:oracle:thin:"+"@localhost:1521",username,password);
		}catch(Exception e){
//			e.printStackTrace();
//			System.out.println("Exception"+e.toString());
			JOptionPane.showMessageDialog(null, "DB  \nα׷ ٽ  ּ");
		}
	}