import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class Zadacha2 extends JFrame {

	private JPanel contentPane;
	private JTextField textField;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Zadacha2 frame = new Zadacha2();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Zadacha2() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 118);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);

		textField = new JTextField();
		textField.setBounds(10, 11, 414, 20);
		contentPane.add(textField);
		textField.setColumns(10);

		JLabel lblNewLabel = new JLabel("");
		lblNewLabel.setBounds(10, 42, 46, 14);
		contentPane.add(lblNewLabel);

		JButton btnNewButton = new JButton("Izchisli");
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String[] num = textField.getText().split(",");
				int kratno = 0;
				int broi = 0;
				for(String n : num) {
					int chislo = Integer.valueOf(n);
					if(chislo % 4 == 0) {
						kratno += chislo;
						broi++;
					}
				}

				lblNewLabel.setText(broi == 0 ? "Nqma kratni na 4" : String.valueOf(kratno / broi));
			}
		});
		btnNewButton.setBounds(335, 42, 89, 23);
		contentPane.add(btnNewButton);
	}

}