Init Commit

src/bandit/Start.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
+ */
+
+package bandit;
+
+import javax.swing.JOptionPane;
+import javax.swing.UIManager;
+
+/**
+ * Builder Class
+ * @author le
+ */
+public class Start
+{
+  public Start()
+  {
+    ZahlenView view = new ZahlenView();
+    Zahlengenerator model = new Zahlengenerator();
+    StartStopController controller = new StartStopController(view, model);
+    WertAdapter adapter = new WertAdapter(view, model);
+    
+    controller.registerEvents();
+    model.addWertSubscription(adapter);
+    view.setVisible(true);
+
+  }
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String[] args) 
+  {
+    try
+    {
+      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+    }
+    catch (Exception ex)
+    {
+      JOptionPane.showMessageDialog(null, ex.toString());
+    }
+    new Start();
+  }
+}

src/bandit/StartStopController.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package bandit;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.logging.Logger;
+import bandit.util.OhmLogger;
+
+/**
+ *
+ * @author le
+ */
+public class StartStopController implements ActionListener
+{
+  private static Logger lg = OhmLogger.getLogger();  
+  private ZahlenView view;
+  private Zahlengenerator model;
+  
+  public StartStopController(ZahlenView view, Zahlengenerator model)
+  {
+    this.view = view;
+    this.model = model;
+  }
+  
+  public void registerEvents()
+  {
+    view.getBtnStart().addActionListener(this);
+    view.getBtnStop().addActionListener(this);
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent evt)
+  {
+    if (evt.getSource() == view.getBtnStart())
+    {
+      lg.info("Start");
+      model.start();
+    }
+    else
+    {
+      lg.info("Stop");
+      model.stop();
+    }
+  }
+}

src/bandit/WertAdapter.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package bandit;
+
+import java.util.concurrent.Flow;
+import java.util.concurrent.Flow.Subscriber;
+import java.util.concurrent.Flow.Subscription;
+
+/**
+ *
+ * @author le
+ */
+public class WertAdapter implements Subscriber<Integer>
+{
+  private ZahlenView view;
+  private Zahlengenerator model;
+  private Subscription subscription;
+  
+  public WertAdapter(ZahlenView view, Zahlengenerator model)
+  {
+    this.view = view;
+    this.model = model;
+  }
+
+  @Override
+  public void onSubscribe(Flow.Subscription subscription)
+  {
+    this.subscription = subscription;
+    this.subscription.request(1);
+    //this.subscription.request(Long.MAX_VALUE);
+  }
+
+  @Override
+  public void onNext(Integer item)
+  {
+    String strWert = String.valueOf(item);
+    view.getLblZahl().setText(strWert);
+    this.subscription.request(1);
+  }
+
+  @Override
+  public void onError(Throwable throwable)
+  {
+  }
+
+  @Override
+  public void onComplete()
+  {
+  }
+
+
+}

src/bandit/ZahlenView.form

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+<?xml version="1.0" encoding="UTF-8" ?>
+
+<Form version="1.3" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
+  <Properties>
+    <Property name="defaultCloseOperation" type="int" value="3"/>
+  </Properties>
+  <SyntheticProperties>
+    <SyntheticProperty name="formSizePolicy" type="int" value="1"/>
+    <SyntheticProperty name="generateCenter" type="boolean" value="false"/>
+  </SyntheticProperties>
+  <AuxValues>
+    <AuxValue name="FormSettings_autoResourcing" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_autoSetComponentName" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_generateFQN" type="java.lang.Boolean" value="true"/>
+    <AuxValue name="FormSettings_generateMnemonicsCode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_i18nAutoMode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_layoutCodeTarget" type="java.lang.Integer" value="1"/>
+    <AuxValue name="FormSettings_listenerGenerationStyle" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_variablesLocal" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_variablesModifier" type="java.lang.Integer" value="2"/>
+    <AuxValue name="designerSize" type="java.awt.Dimension" value="-84,-19,0,5,115,114,0,18,106,97,118,97,46,97,119,116,46,68,105,109,101,110,115,105,111,110,65,-114,-39,-41,-84,95,68,20,2,0,2,73,0,6,104,101,105,103,104,116,73,0,5,119,105,100,116,104,120,112,0,0,1,-125,0,0,2,14"/>
+  </AuxValues>
+
+  <Layout class="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout"/>
+  <SubComponents>
+    <Component class="javax.swing.JLabel" name="lblZahl">
+      <Properties>
+        <Property name="font" type="java.awt.Font" editor="org.netbeans.beaninfo.editors.FontEditor">
+          <Font name="Liberation Sans" size="100" style="0"/>
+        </Property>
+        <Property name="horizontalAlignment" type="int" value="0"/>
+        <Property name="text" type="java.lang.String" value="?"/>
+      </Properties>
+      <Constraints>
+        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+          <BorderConstraints direction="Center"/>
+        </Constraint>
+      </Constraints>
+    </Component>
+    <Container class="javax.swing.JPanel" name="jPanel1">
+      <Constraints>
+        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+          <BorderConstraints direction="Last"/>
+        </Constraint>
+      </Constraints>
+
+      <Layout class="org.netbeans.modules.form.compat2.layouts.DesignFlowLayout"/>
+      <SubComponents>
+        <Component class="javax.swing.JButton" name="btnStart">
+          <Properties>
+            <Property name="text" type="java.lang.String" value="Start"/>
+          </Properties>
+        </Component>
+        <Component class="javax.swing.JButton" name="btnStop">
+          <Properties>
+            <Property name="text" type="java.lang.String" value="Stop"/>
+          </Properties>
+        </Component>
+      </SubComponents>
+    </Container>
+  </SubComponents>
+</Form>

src/bandit/ZahlenView.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
+ */
+package bandit;
+
+/**
+ *
+ * @author le
+ */
+public class ZahlenView extends javax.swing.JFrame
+{
+  /**
+   * @return the btnStart
+   */
+  public javax.swing.JButton getBtnStart()
+  {
+    return btnStart;
+  }
+
+  /**
+   * @return the btnStop
+   */
+  public javax.swing.JButton getBtnStop()
+  {
+    return btnStop;
+  }
+
+  /**
+   * @return the lblZahl
+   */
+  public javax.swing.JLabel getLblZahl()
+  {
+    return lblZahl;
+  }
+
+  /**
+   * Creates new form ZahlenView
+   */
+  public ZahlenView()
+  {
+    initComponents();
+  }
+
+  /**
+   * This method is called from within the constructor to initialize the form.
+   * WARNING: Do NOT modify this code. The content of this method is always
+   * regenerated by the Form Editor.
+   */
+  @SuppressWarnings("unchecked")
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
+
+        lblZahl = new javax.swing.JLabel();
+        jPanel1 = new javax.swing.JPanel();
+        btnStart = new javax.swing.JButton();
+        btnStop = new javax.swing.JButton();
+
+        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+
+        lblZahl.setFont(new java.awt.Font("Liberation Sans", 0, 100)); // NOI18N
+        lblZahl.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
+        lblZahl.setText("?");
+        getContentPane().add(lblZahl, java.awt.BorderLayout.CENTER);
+
+        btnStart.setText("Start");
+        jPanel1.add(btnStart);
+
+        btnStop.setText("Stop");
+        jPanel1.add(btnStop);
+
+        getContentPane().add(jPanel1, java.awt.BorderLayout.PAGE_END);
+
+        pack();
+    }// </editor-fold>//GEN-END:initComponents
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String args[])
+  {
+    /* Set the Nimbus look and feel */
+    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
+    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
+         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
+     */
+    try
+    {
+      for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels())
+      {
+        if ("Nimbus".equals(info.getName()))
+        {
+          javax.swing.UIManager.setLookAndFeel(info.getClassName());
+          break;
+        }
+      }
+    }
+    catch (ClassNotFoundException ex)
+    {
+      java.util.logging.Logger.getLogger(ZahlenView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (InstantiationException ex)
+    {
+      java.util.logging.Logger.getLogger(ZahlenView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (IllegalAccessException ex)
+    {
+      java.util.logging.Logger.getLogger(ZahlenView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (javax.swing.UnsupportedLookAndFeelException ex)
+    {
+      java.util.logging.Logger.getLogger(ZahlenView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    //</editor-fold>
+
+    /* Create and display the form */
+    java.awt.EventQueue.invokeLater(new Runnable()
+    {
+      public void run()
+      {
+        new ZahlenView().setVisible(true);
+      }
+    });
+  }
+
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    private javax.swing.JButton btnStart;
+    private javax.swing.JButton btnStop;
+    private javax.swing.JPanel jPanel1;
+    private javax.swing.JLabel lblZahl;
+    // End of variables declaration//GEN-END:variables
+}

src/bandit/Zahlengenerator.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package bandit;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Flow.Subscriber;
+import java.util.concurrent.SubmissionPublisher;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.logging.Logger;
+import bandit.util.OhmLogger;
+
+/**
+ *
+ * @author le
+ */
+public class Zahlengenerator implements Runnable // Callable
+{
+  private static Logger lg = OhmLogger.getLogger(); //Logger sollten immer static sein da sie für alle instanzen loggs ausführen
+  
+  private int wert;
+  /** Zustandsvariable !!! 
+   *  bei 2 Werten boolean sonst enum 
+   */
+//  private volatile boolean laufend;
+  private AtomicBoolean laufend;
+  //private Thread thd;
+  private ExecutorService eService;
+  
+  private final Object LOCK;
+  
+  private SubmissionPublisher<Integer> wertPublisher;
+  
+  public Zahlengenerator()
+  {
+    wert = -1;
+    //laufend = false;
+    laufend = new AtomicBoolean(false);
+    //thd = null;
+    eService = Executors.newSingleThreadExecutor();
+    wertPublisher = new SubmissionPublisher<>();
+    LOCK = new Object();
+  }
+  
+  public void addWertSubscription(Subscriber<Integer> subscriber)
+  {
+    wertPublisher.subscribe(subscriber);
+  }
+  
+  public void start()
+  {
+    //laufend = true;
+    laufend.set(true);
+    synchronized (LOCK)
+    {
+      LOCK.notify();
+    }
+    
+    
+    if (eService.isShutdown())
+    {
+      eService = Executors.newSingleThreadExecutor();
+    }
+    eService.execute(this);
+    //Future task = eService.submit(this); v.a. bei callable
+//    if (thd == null)
+//    {
+//      thd = new Thread(this);
+//      thd.start();
+//    }
+  }
+  
+  public void stop()
+  {
+    //laufend = false;
+    laufend.set(false);
+  }
+
+  @Override
+  public void run()
+  {
+    while (true)
+    {
+      //while (!laufend)
+      while (!laufend.get())
+      {
+        synchronized (LOCK)
+        {
+          try
+          {
+            lg.info("WAIT");
+            LOCK.wait();
+          }
+          catch (InterruptedException ex)
+          {
+            lg.warning(ex.toString());
+          }
+        }
+      }
+         
+      try
+      {
+        Thread.sleep(100);
+      }
+      catch (Exception ex)
+      {
+        System.err.println(ex);
+      }
+      this.berechneWert();
+      wertPublisher.submit(wert);
+    }
+//    thd = null;
+//    eService.shutdown();
+  }
+
+  private synchronized void berechneWert()
+  {
+    wert = (int) (1 + 49*Math.random());
+  }
+  
+  public synchronized int getWert()
+  {
+    return wert;
+  }
+  
+}

src/bandit/util/OhmLogger.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package bandit.util;
+
+import java.time.LocalDateTime;
+import java.util.logging.*;
+/**
+ *
+ * @author le
+ */
+public class OhmLogger
+{
+  private static Logger lg = null;
+  
+  private OhmLogger() //Singelton-Patter -> privater ctor -> anlegen nur über klassenmethode möglich
+  {
+  }
+  
+  public static Logger getLogger()
+  {
+    if (lg == null)
+    {
+      lg = Logger.getLogger("OhmLogger");
+      initLogger();
+    }
+    return lg;
+  }
+  
+  private static void initLogger()
+  {
+//    FileHandler fh = new FileHandler();
+    ConsoleHandler ch = new ConsoleHandler();
+    ch.setFormatter(new OhmFormatter());
+    lg.addHandler(ch);
+  }
+}
+
+class OhmFormatter extends SimpleFormatter
+{
+  @Override
+  public String format(LogRecord record)
+  {
+    String logline = "";
+    
+    LocalDateTime ldt = LocalDateTime.now();
+    logline += ldt.toString();
+    logline += ";" + record.getMessage();
+    logline += "\n";
+    
+    return logline;
+  }
+}