public void updateAudioPanel()
	{
		System.out.println("updation of audio panel required : ");
		audioPanel.removeAll();
		studentPanel.removeAll();
		studentPanel=new JPanel();
		if(Integer.parseInt(studentNumberComboBox.getSelectedItem().toString())<5 || Student.studentListAudio.size()<=5)
			studentPanel.setLayout(new GridLayout(5,1,10,5));
		else
			studentPanel.setLayout(new BoxLayout(studentPanel, BoxLayout.Y_AXIS));
		
		studentPanel.setBackground(Color.white);
	
		for(int j=0;j<Integer.parseInt(studentNumberComboBox.getSelectedItem().toString()) && j<Student.studentListAudio.size();j++)
			studentPanel.add(createStudentPanel(j,Student.studentListAudio.get(j)));
		
		audioPanel.add(new JScrollPane(studentPanel),BorderLayout.CENTER);
		
		audioPanel.setBackground(Color.WHITE);
		
		if(tabbedPane.getSelectedIndex()==0 && (Student.studentListAudio.size()-Integer.parseInt(studentNumberComboBox.getSelectedItem().toString()))>=0)
			waitingButton.setText("Waiting : "+(Student.studentListAudio.size()-Integer.parseInt(studentNumberComboBox.getSelectedItem().toString())));
		else if(tabbedPane.getSelectedIndex()==1 && (Student.studentListText.size()-Integer.parseInt(studentNumberComboBox.getSelectedItem().toString()))>=0)
			waitingButton.setText("Waiting : "+(Student.studentListText.size()-Integer.parseInt(studentNumberComboBox.getSelectedItem().toString())));
		else 
			waitingButton.setText("Waiting : 0");
	}