if(usernameF.getText().length()==0 || passwordF.getText().length()==0) {
					err.setText("Please Enter Username and Password");
				}
				else {
					users user = new users();
					user.init();
					user.opencon();

					if(user.validateUser(usernameF.getText().toString(), passwordF.getText().toString())) {
						setVisible(false);
						menu m = new menu();
						m.setVisible(true);
					}
					else {
						err.setText("Username and Password is NOT Valid");
					}
					user.closecon();
				}