NetBeans/EierUhr/src/model/Model.java

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package model;

import java.util.Observable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

/**
 *
 * @author nobody
 */
public class Model extends Observable implements Runnable
{
  private int zahl;
  private boolean status;
  private Thread thr;
  private boolean notify;
  private boolean schlafen;

  public Model()
  {
    zahl = 0;
    status = false;
    thr = null;
  }

  public void start()
  {
    if (status == true)
    {
      //1
      //notify = true;
      synchronized (thr)
      {
        thr.notify();
        schlafen = false;
      }
    }
    if (status == false && thr == null)
    {
      zahl = 0;
      thr = new Thread(this);
      thr.start();
      status = true;
      notify = true;
    }
  }

  @Override
  public void run()
  {
    while (status == true)
    {
      if (schlafen == true)
      {
        synchronized (thr)
        {
          try
          {
            thr.wait();
          }
          catch (InterruptedException ex)
          {
            JOptionPane.showMessageDialog(null, "Alles Kaputt");
          }
        }
      }
      // Zahl incrementieren
      zahl--;
      // Zahl ändern
      if (notify == true)
      {
        this.setChanged();
        this.notifyObservers();
      }
      // Zahl zurücksetzen
      if (zahl == 0)
      {
        zahl = 10;
      }
      // kurze Wartezeit
      try
      {
        Thread.sleep(1000);
      }
      catch (InterruptedException ex)
      {
        Logger.getLogger(Model.class.getName()).log(Level.SEVERE, null, ex);
      }
    }
  }

  /**
   * @return the zahl
   */
  public int getZahl()
  {
    return zahl;
  }
  
  public void setStartZahl(int zahl)
  {
    this.zahl = zahl;
  }
  
  public void isWarten()
  {
    schlafen = true;
  }
  
  public void isWeiterlaufen(){
    schlafen = false;
  }
}