private boolean verfiyeTextField(){
		boolean r = true;
		if (lectureName.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "Lecture text is empty",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		else if (tag.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "Tag text is empty",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		
		else if (tagEndTime.compareTo(lectureStartTime) == 0 && tagEndDate.compareTo(lectureStartDate)==0){
			JOptionPane.showMessageDialog(mainForm,
				    "Start date and time are equal to end date and time\n Can not get any tweets  ",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		else if (tagStartDate.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "Start date is empty ",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		else if (tagStartTime.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "Start time is missing",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		else if (tagEndDate.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "End date is missing",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		else if (tagEndTime.isEmpty()){
			JOptionPane.showMessageDialog(mainForm,
				    "end time is missing",
				    "Error",
				    JOptionPane.ERROR_MESSAGE);
			return false;
		}
		
		return r;
	}