l'arménie est un pays vraiment très bien

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class VueStationMeteo extends JFrame implements StationMeteoConstantes {

	//variables constructeurs
	EnsValeurMeteo ens;
	//ArrayList<ValMeteoJour> j;
	JFileChooser chooser;

	//panels
	JPanel panelCentre;
	JPanel panelNord;
	JPanel panelOuest;
	JPanel panelSud;

	//variables panelCentre
	JTextArea centreTextArea;

	//variables panelNord
	JLabel nordPlaceLabel;
	JLabel nordSemaineLabel;
	JLabel nordTemperatureLabel;
	JLabel nordPrecipitationLabel;

	JTextField nordPlaceTextField;
	JComboBox nordSemaineComboBox;
	DefaultComboBoxModel defaultSemaine;
	JTextField nordTemperatureTextField;
	JTextField nordPrecipitationTextField;

	JComboBoxListener ecouteComboBox;

	//variables PanelOuest
	ArrayList<JButton> semaine;
	MeteoListener ecouteSemaine;

	//variables panelSud
	JButton charger;
	JButton sauver;
	JButton supprimer;
	MeteoListener ecouteCharger;
	MeteoListener ecouteSauver;
	MeteoListener ecouteSupprimer;

	//useful
	int val;


	public VueStationMeteo() {

		super("Station météo");
		this.ens = new EnsValeurMeteo();
		this.chooser = new JFileChooser(System.getProperties().getProperty("user.dir"));
		int returnVal = this.chooser.showOpenDialog(this.chooser.getParent());
		if(returnVal == JFileChooser.APPROVE_OPTION) {
			try {
				this.ens.charger(this.chooser.getSelectedFile().getName());
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		this.initialise();
		this.initConnections();
		this.setBounds(Toolkit.getDefaultToolkit().getScreenSize().width/2-800/2,Toolkit.getDefaultToolkit().getScreenSize().height/2-500/2,800,500);
		this.setMinimumSize(new Dimension(getSize()));
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
		this.setVisible(true);
	}

	private JPanel getPanelCentre() {

		this.panelCentre=new JPanel();
		this.centreTextArea = new JTextArea(this.panelCentre.getSize().width,this.panelCentre.getSize().height);
		this.panelCentre.add(this.centreTextArea);
		// for(int i = 0 ; i!=j.size() ; i++) {
		//	this.centreTextArea.append(j.get(i).toString()+"\n\n\n\n");
		// }
		this.add(this.panelCentre,BorderLayout.CENTER);
		return this.panelCentre;
	}

	private JPanel getPanelNord() {

		this.panelNord=new JPanel();
		for(int i=0;i!=4;i++) {

			if (i==0) {
				this.panelNord.add(this.nordPlaceLabel = new JLabel(PLACE));
				this.panelNord.add(this.nordPlaceTextField = new JTextField(ens.getLieu(),6));
			}
			if (i==1) {
				this.panelNord.add(this.nordSemaineLabel = new JLabel(SEMAINE));
				this.panelNord.add(this.nordSemaineComboBox = new JComboBox(this.defaultSemaine = new DefaultComboBoxModel()));
				this.nordSemaineComboBox.addActionListener(this.ecouteComboBox = new JComboBoxListener());

				for(int k = 0; k!=52 ; k++) {
					this.defaultSemaine.addElement(nombreSemaine[k]);
					//ens.addAll(k,new ArrayList<ValMeteoJour>());
				}
			}
			if (i==2) {
				this.panelNord.add(this.nordTemperatureLabel = new JLabel(TEMPERATURE));
				this.panelNord.add(this.nordTemperatureTextField = new JTextField(6));
			}
			if (i==3) {
				this.panelNord.add(this.nordPrecipitationLabel = new JLabel(PRECIPITATION));
				this.panelNord.add(this.nordPrecipitationTextField = new JTextField(6));
			}
		}
		this.add(this.panelNord,BorderLayout.NORTH);
		return this.panelNord;
	}

	private JPanel getPanelOuest() {

		this.panelOuest=new JPanel();
		this.semaine = new ArrayList<JButton>();
		this.panelOuest.setLayout(new GridLayout(7,1,0,20));

		for(int i=0;i!=7;i++){

			this.semaine.add(new JButton(joursSemaine[i]));
			this.panelOuest.add(this.semaine.get(i));
		}
		return this.panelOuest;
	}

	class MeteoListener implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			for(int i = 0 ; i!=7 ; i++) {
				if(((JButton)e.getSource()).equals(semaine.get(i))) {
					centreTextArea.setText(ens.toString()+"\n");
					centreTextArea.append(ens.get(i).toString()+"\n");
					nordTemperatureTextField.setText(String.valueOf(ens.get(i).getTemp()));
					nordPrecipitationTextField.setText(String.valueOf(ens.get(i).getPrec()));
					/*nordTemperatureTextField.getText();
					nordPrecipitationTextField.getText();*/
					saisieValeurs(i);
				}
			}

			if(e.getSource() == charger) {

				chooser = new JFileChooser(System.getProperties().getProperty("user.dir"));
				int returnVal = chooser.showOpenDialog(chooser.getParent());
				if(returnVal == JFileChooser.APPROVE_OPTION) {
					try {
						ens.charger(chooser.getSelectedFile().getName());
					} catch (IOException ex) {
						ex.printStackTrace();
					}
				}
			}

			if(e.getSource() == sauver) {

				ValMeteoJour temp = new ValMeteoJour(joursSemaine[val],Float.parseFloat(nordTemperatureTextField.getText()),Float.parseFloat(nordPrecipitationTextField.getText()));
				sauver(temp);
			}

			if(e.getSource() == supprimer) {

				String txt = centreTextArea.getSelectedText();
				supprimer(txt);
			}
		}
	}

	class JComboBoxListener implements ActionListener {

		public void actionPerformed(ActionEvent e) {

			//ens.setNumSemaine(((JButton)e.getSource()).getText());
		}
	}

	private JPanel getPanelSud() {

		this.panelSud=new JPanel();

		for(int i=0;i!=3;i++){

			if (i==0)
				this.panelSud.add(this.charger = new JButton("charger"));
			if (i==1)
				this.panelSud.add(this.sauver = new JButton("sauver"));
			if (i==2)
				this.panelSud.add(this.supprimer = new JButton("supprimer"));

		}
		this.add(this.panelSud,BorderLayout.SOUTH);

		return this.panelSud;
	}

	public void initialise(){

		this.setLayout(new BorderLayout());
		this.add(getPanelNord(),BorderLayout.NORTH);
		this.add(getPanelSud(),BorderLayout.SOUTH);
		this.add(getPanelCentre(),BorderLayout.CENTER);
		this.add(getPanelOuest(),BorderLayout.WEST);
	}

	public void initConnections() {

		this.ecouteSemaine = new MeteoListener();
		for(int i = 0 ; i!=7 ; i++)
			this.semaine.get(i).addActionListener(this.ecouteSemaine);
		this.ecouteCharger = new MeteoListener();
		this.charger.addActionListener(ecouteCharger);
		this.ecouteSauver = new MeteoListener();
		this.sauver.addActionListener(ecouteSauver);
		this.ecouteSupprimer = new MeteoListener();
		this.supprimer.addActionListener(ecouteSupprimer);
	}

	public void saisieValeurs(int jourSaisi) {

		this.val = jourSaisi;
	}

	public void sauver(ValMeteoJour donnees) {

		if(verificationSauvegarde()) {

			try {
				ens.sauver("test.txt", donnees);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			JOptionPane.showMessageDialog(this,"Sauvegarde");
		}
		else
			JOptionPane.showMessageDialog(this,"Erreur données");
	}

	public boolean verificationSauvegarde() {

		boolean flag = false;

		if(nordTemperatureTextField.getText() != null && nordTemperatureTextField.getText() != null) {
			if((Float.parseFloat(nordTemperatureTextField.getText()) >= -88 && Float.parseFloat(nordTemperatureTextField.getText()) <= 58) && Float.parseFloat(nordPrecipitationTextField.getText()) <= 1340) {

				flag = true;
			}
		}

		return flag;
	}

	public void supprimer(String texte) {

		if(verificationSuppression(texte) >= 0 && verificationSuppression(texte) <= 6) {
			ens.set(verificationSuppression(texte),null);
			JOptionPane.showMessageDialog(this,"Suppression");
		}
		else
			JOptionPane.showMessageDialog(this,"Erreur sélection");
	}

	public int verificationSuppression(String texte) {

		int flag = -1;

		for(int i = 0 ; i!=joursSemaine.length ; i++) {
			if(texte.contains(joursSemaine[i]))
				flag=i;
		}

		return flag;
	}

	public static void main(String[] args){

		new VueStationMeteo();
	}
}