import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author aldui
 */
public class Jedinacek {

    private static Jedinacek instance;
    int counter;

    private Jedinacek() {

        DataInputStream input;
        try {
            input = new DataInputStream(new FileInputStream("counter.dat"));

            counter = input.readInt();

            input.close();
        } catch (Exception ex) {
            try {
                FileOutputStream fos = new FileOutputStream("counter.dat");
                DataOutputStream dos = new DataOutputStream(fos);
                counter = 0;
                dos.writeInt(counter);
                dos.close();
            } catch (IOException ex1) {
                Logger.getLogger(Jedinacek.class.getName()).log(Level.SEVERE, null, ex1);
            }
        }

    }

    public static Jedinacek getInstance() {
        if (instance == null) {
            instance = new Jedinacek();
        }

        return instance;
    }

    public void addOne() {
        counter += 1;
        try {
            FileOutputStream fos = new FileOutputStream("counter.dat");
            DataOutputStream dos = new DataOutputStream(fos);
            dos.writeInt(counter);
            dos.close();
        } catch (IOException ex) {
            Logger.getLogger(Jedinacek.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public int getCounter() {
        return counter;
    }

}