Random to test Gitea PFP

Just adding MenuBar does not show?

.idea/misc.xml

@@ -1,5 +1,5 @@
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="21" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="openjdk-22" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

Medien/Dokumente/Anmerkung.txt

@@ -0,0 +1,5 @@
+Moodle meldet beim Versuch die Word-Datei einzufügen einen Fehler "Verbindung zum Server verloren"
+daher die Abgabe im PDF Format.
+Die Word Datei ist bei Gitea hochgeladen und kann dort heruntergeladen werden.
+
+https://gitea.hb.dhbw-stuttgart.de/vanBos/S2_Aufgaben/src/branch/main/Medien/Dokumente/Abgabe%2014.05.24.docx

README.md

@@ -16,7 +16,8 @@
   - c) Java built-in generic Stack
 - VL 3 Aufgabe 2 (Dynamischer Speicher einer Queue)
 - VL 3 Aufgabe 3 (ArrayList vs LinkedList)
-
+- VL 4 Aufgabe 1 (Threads counting)
+- VL 4 Aufgabe 2 (User - Printer)
 
 - keine
 

src/Main.java

@@ -2,15 +2,11 @@
 // then press Enter. You can now see whitespace characters in your code.
 
 import part3.aufg3.Anwendung;
+
+
+
 public class Main {
     public static void main(String[] args) {
-        int size;
-        int MAX_LENGTH = 3;
-        int MIN_LENGTH = 10;
-
-        for (int i = 0; i <25; i++) {
-            size = (int) (Math.random() * MAX_LENGTH);
-            System.out.println(size);
-        }
+        System.out.println("I am Main!");
     }
 }

src/part3/aufg2/Schlenglein.java

@@ -38,6 +38,10 @@ public class Schlenglein <T>{
         return this.maxSize;
     }
 
+    public boolean isEmpty(){
+        return this.size()<=0;
+    }
+
     public void attemptDynamicResize(){
         if (numberOfElements < 0.2*maxSize){
             // Kleiner Machen
@@ -62,4 +66,13 @@ public class Schlenglein <T>{
             System.arraycopy(temp, 0, myArray, 0, maxSize / 2);
         }
     }
+
+    public void printAll(){
+        System.out.print("[");
+        for (int i = 0; i < this.size()-1; i++) {
+            System.out.print(this.myArray[i] + ", ");
+        }
+        System.out.println(this.myArray[this.size()-1] + "]");
+
+    }
 }

src/part3/aufg3/Anwendung.java

@@ -57,7 +57,7 @@ public class Anwendung {
 
     public static void main(String[] args) {
 
-        int stringsToAdd = 500_000;
+        int stringsToAdd = 1000_000;
         long totalTimeSpent = 0;
         int measurements = 10;
 

src/part4/aufg1/Demo.java

@@ -0,0 +1,12 @@
+package part4.aufg1;
+
+public class Demo {
+    public static void main(String[] args) {
+        ThreadedCounter tc = new ThreadedCounter(-1,1);
+        ThreadedCounter tC = new ThreadedCounter(4,2);
+
+        tc.start();
+        tC.start();
+
+    }
+}

src/part4/aufg1/ThreadedCounter.java

@@ -0,0 +1,30 @@
+package part4.aufg1;
+
+public class ThreadedCounter extends Thread {
+    private final int threadNumber;
+    private final int increment;
+    static int sharedInt = 0;
+    static int iterations = 0;
+
+    public ThreadedCounter(int increment, int threadNumber) {
+        this.increment = increment;
+        this.threadNumber = threadNumber;
+    }
+
+    public void run() {
+        while (sharedInt < 1000){
+            synchronized (getClass()) {
+                iterations++;
+                sharedInt += increment;
+                System.out.println("Thread " + threadNumber + " made the shared Int: " + sharedInt);
+
+                try {
+                    sleep(10);
+                } catch (InterruptedException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+        System.out.println("it took " + iterations + " iterations");
+    }
+}

src/part4/aufg2/Demo.java

@@ -0,0 +1,28 @@
+package part4.aufg2;
+
+/*
+In einem System arbeiten eine Reihe von Benutzer, die von Zeit zu Zeit
+Druckaufträge eines gewissen Umfangs erzeugen.
+Diese werden in einer Druckerwarteschlange verwaltet.
+Zwei Drucker stehen zur Verfügung und arbeiten die Aufträge ab.
+
+Modellieren Sie das Problem als Erzeuger‐Verbraucher‐Problem und realisieren Sie es in Java.
+ */
+
+
+public class Demo {
+    public static void main(String[] args) {
+        int numUsers = 7;
+        int numPrinter = 4;
+
+        for (int i = 1; i <= numUsers; i++) {
+            User user = new User(i);
+            user.start();
+        }
+
+        for (int i = 1; i <= numPrinter ; i++) {
+            Printer printer = new Printer(i);
+            printer.start();
+        }
+    }
+}

src/part4/aufg2/Printer.java

@@ -0,0 +1,31 @@
+package part4.aufg2;
+
+public class Printer extends Thread {
+    private int threadNumber;
+
+    public Printer(int threadNumber){
+        this.threadNumber = threadNumber;
+    }
+
+    public void run() {
+        while (true) {
+            try {
+                synchronized (Puwwer.q) {
+                    if (Puwwer.q.isEmpty()){
+                        try {
+                            Puwwer.q.wait();
+                        } catch (InterruptedException e) {
+                            throw new RuntimeException(e);
+                        }
+                    }
+                    System.out.println("Printer " + this.threadNumber + " prints " + Puwwer.q.get());
+                }
+            } catch (NullPointerException e){}
+            try {
+                sleep(100);
+            } catch (InterruptedException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+    }
+}

src/part4/aufg2/Puwwer.java

@@ -0,0 +1,7 @@
+package part4.aufg2;
+
+import part3.aufg2.Schlenglein;
+
+public class Puwwer {
+    static Schlenglein q = new Schlenglein();
+}

src/part4/aufg2/User.java

@@ -0,0 +1,36 @@
+package part4.aufg2;
+
+public class User extends Thread {
+    private int threadNumber;
+    public User(int threadNumber) {
+        this.threadNumber = threadNumber;
+    }
+
+    public synchronized void makeRequest() {
+        synchronized (Puwwer.q) {
+            int randomInt = (int) (Math.random() * ((int) (Math.random() * 1000)));
+            String randomIntStr = this.threadNumber + " " + randomInt;
+
+            Puwwer.q.add(randomIntStr);
+
+            System.out.println("User " + threadNumber + " added " + randomIntStr);
+
+            try {
+                Puwwer.q.notify();
+            } catch (IllegalMonitorStateException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    public void run() {
+            while (true) {
+                makeRequest();
+                try {
+                    sleep(3000);
+                } catch (InterruptedException e) {
+                    throw new RuntimeException(e);
+               }
+            }
+    }
+}

src/part5/Demo.java

@@ -0,0 +1,14 @@
+package part5;
+
+public class Demo {
+    public static void main(String[] args) {
+//        for (int i = 0; i < 2; i++) {
+//            Window w = new Window("My Java GUI");
+//            w.display();
+//        }
+
+        aufg gudWindow = new aufg("Mein Geniales GUI", 400, 340);
+        gudWindow.loadDesign2();
+        gudWindow.display(true);
+    }
+}

src/part5/Window.java

@@ -0,0 +1,88 @@
+package part5;
+
+import javax.swing.*;
+import javax.swing.text.html.HTMLEditorKit;
+import java.awt.*;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.awt.event.WindowListener;
+
+public class Window {
+    private String title;
+
+    public Window(String title){
+        this.title = title;
+    }
+
+    public JFrame setup(int height, int width){
+        JFrame w = new JFrame();
+        w.setVisible(true);
+        w.setSize(width,height);
+        w.setTitle(this.title);
+        w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        return w;
+    }
+
+    public void display() {
+        JFrame w = setup(700,700);
+
+        JPanel contentPane = new JPanel();
+
+        JButton textFeld = new JButton("Ich bin eine Beschriftung und lebe in einem Button");
+        contentPane.add(textFeld);
+
+        JTextField text = new JFormattedTextField("Hello, I am a formatted Text field \nThis Linebreak may work");
+        contentPane.add(text);
+
+        JLabel vorname = new JLabel("Vorname");
+        JLabel nachname = new JLabel("Nachname");
+        JLabel MatrikelNr = new JLabel("MatrikelNR.");
+        JLabel password = new JLabel("Passwort");
+        JLabel longText = new JLabel("Langer Text");
+
+        JTextField feldVorName = new JTextField(10);
+        JTextField feldNachName = new JTextField(10);
+        JPasswordField feldPassw = new JPasswordField(10);
+        JTextArea feldLongText = new JTextArea(20,15);
+
+        contentPane.add(vorname);
+        contentPane.add(feldVorName);
+        contentPane.add(nachname);
+        contentPane.add(feldNachName);
+        contentPane.add(password);
+        contentPane.add(feldPassw);
+
+        Icon i = new ImageIcon("Medien/Bilder/HackerUnicorn_Schäbig.png");
+        JButton grafik = new JButton(i);
+        contentPane.add(grafik);
+
+        contentPane.add((MatrikelNr));
+        contentPane.add(longText);
+        contentPane.add(feldLongText);
+
+
+        w.setContentPane(contentPane);
+
+
+        JMenuBar menuebar = new JMenuBar();
+        JMenu file = new JMenu("file");
+        JMenu help = new JMenu("help");
+
+        menuebar.add(file);
+        menuebar.add(help);
+
+        JMenuItem fileOpen = new JMenuItem("open");
+        JMenuItem fileClose = new JMenuItem("close");
+        JMenuItem fileEdit = new JMenuItem("edit");
+        JMenuItem helpInfo = new JMenuItem("info");
+        JMenuItem helpUnsub = new JMenuItem("unsubscribe");
+
+        file.add(fileOpen);
+        file.add(fileEdit);
+        file.add(fileClose);
+        help.add(helpInfo);
+        help.add(helpUnsub);
+
+        w.setJMenuBar(menuebar);
+    }
+}

src/part5/aufg.java

@@ -0,0 +1,246 @@
+package part5;
+
+import javax.swing.*;
+
+
+public class aufg {
+    private String title;
+    private int height;
+    private int width;
+    private JFrame window;
+    private JPanel contentPane;
+    private JMenuBar menubar;
+
+    public aufg(String title, int height, int width){
+        this.title = title;
+        this.width = width;
+        this.height = height;
+        this.window = new JFrame();
+        this.contentPane = new JPanel();
+        this.menubar = new JMenuBar();
+    }
+
+    public void display(boolean exitOnClose){
+        this.window.setTitle(this.title);
+        this.window.setSize(this.width, this.height);
+        this.window.setContentPane(this.contentPane);
+        this.window.setVisible(true);
+
+        if (exitOnClose){
+            this.window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        }
+    }
+
+    public void loadDesign2(){
+        addMenuBar();
+        addLabel("Von");
+        addLabeledTextField("Bahnhof/Haltestelle", false);
+        addImage("Medien/Bilder/info_I_tiny.png");
+        addLabel("Nach");
+        addLabeledTextField("Bahnhof/Haltestelle", false);
+        addButton("über");
+        addLabel("Hinfahrt");
+        addLabeledTextField("Datum", false);
+        addLabel("Rückfahrt");
+        addLabeledTextField("Uhrzeit", false);
+// addDropdown(values = {"Abfahrt", "Ankunft"})
+        addLabeledTextField("Uhrzeit", false);
+// addDropdown(values = {"Abfahrt", "Ankunft"})
+        addLabel("Angaben zur Preisberechnung");
+        addLabel("Reisende");
+// addDropdown(values = {"1 Erwachsener", "1 Student"})
+// addDropdown(values = {"Keine Ermäßigung", "20% Rabatt"})
+// addDropDown(values = {"2. Klasse", "1. Klasse"})
+        addButton("Personen Hinzufügen");
+        addImage("Medien/Bilder/info_I_tiny.png");
+        addButton("Auslandspreise");
+        addImage("Medien/Bilder/info_I_tiny.png");
+        addLabel("Angaben zur Verbindung");
+        addLabel("Verkehrsmittel: ");
+// addDropDown(values = {"Standartsuche", "Spezialsuche"})
+        addButton("Erweitert");
+        addImage("Medien/Bilder/info_I_tiny.png");
+// addCheckBox(label = "schnelle Verbindung bevorzugen")
+        addImage("Medien/Bilder/info_I_tiny.png");
+// addCheckBox(label = "Fahrradmitnahme")
+        addButton("Verbindung Suchen");
+        addButton("Neue Anfrage");
+        addButton("Mein Anfrageprofil");
+    }
+
+    public void loadDesign(){
+        addMenuBar();
+        addLabeledTextField("TextBox", true);
+        addLabeledPasswordField("Password", true);
+        addImage("Medien/Bilder/info_I_tiny.png");
+        addImage("Medien/Bilder/HackerUnicorn_Schäbig.png");
+        addLabeledRadioButtons("First Set of radiobuttons", new String[] {"Option1", "Choice2", "Variant3"}, true);
+        addLabeledRadioButtons("Second Group of Options", new String[] {"Maybe this?", "Or that"}, true);
+        // popUpInputText(new String[] {"Choice1", "Option2"});
+        popUpDropDown("Medien/Bilder/info_I_tiny.png",
+                "Title of my Window",
+                "choose your favourite",
+                new String[] {"Choice1", "Option2"},
+                "Option2");
+    }
+
+    public void addMenuBar(){
+        JMenu file = new JMenu("File");
+        JMenuItem fileOpen = new JMenuItem("Open");
+        JMenuItem fileEdit = new JMenuItem("Edit");
+        JMenuItem fileClose = new JMenuItem("Close");
+        file.add(fileOpen);
+        file.add(fileEdit);
+        file.add(fileClose);
+
+        JMenu help = new JMenu("Help");
+        JMenuItem helpInfo = new JMenuItem("Info");
+        JMenuItem helpUnsub = new JMenuItem("Unsubscribe");
+        help.add(helpInfo);
+        help.add(helpUnsub);
+
+        JMenu english = new JMenu("English");
+        JMenuItem englishChangeTo = new JMenuItem("Change to English");
+        english.add(englishChangeTo);
+
+        JMenu braile = new JMenu("Braile");
+        JMenuItem braileChangeTo = new JMenuItem("Change to Braile");
+        braile.add(braileChangeTo);
+
+        this.menubar.add(file);
+        this.menubar.add(help);
+        this.menubar.add(english);
+        this.menubar.add(braile);
+
+        this.window.setJMenuBar(this.menubar);
+    }
+
+    public void addLabel(String text){
+        this.contentPane.add(makeLabel(text));
+    }
+    public JLabel makeLabel(String text){
+        return new JLabel(text);
+    }
+
+    public void addTextField(int columns){
+        this.contentPane.add(makeTextField(columns));
+    }
+    public JTextField makeTextField(int columns){
+        return new JTextField(columns);
+    }
+
+    public void addLabeledTextField(String labelText, boolean makeVertical){
+        this.contentPane.add(makeLabeledTextField(labelText,makeVertical));
+    }
+    public Box makeLabeledTextField(String labelText, boolean makeVertical){
+        Box b;
+
+        if (makeVertical) {
+            b = Box.createVerticalBox();
+        }else{
+            b = Box.createHorizontalBox();
+        }
+
+        b.add(makeLabel(labelText));
+        b.add(makeTextField(10));
+        return b;
+    }
+
+    public void addPasswordField(){
+        this.contentPane.add(makePasswordField());
+    }
+    public JPasswordField makePasswordField(){
+        return new JPasswordField(10);
+    }
+
+    public void addLabeledPasswordField(String label, boolean makeVertical){
+        this.contentPane.add(makeLabeledPasswordField(label,makeVertical));
+    }
+    public Box makeLabeledPasswordField(String label, boolean makeVertical){
+        Box b;
+
+        if (makeVertical) {
+            b = Box.createVerticalBox();
+        }else{
+            b = Box.createHorizontalBox();
+        }
+
+        b.add(makeLabel(label));
+        b.add(makePasswordField());
+
+        return b;
+    }
+
+    public void addTextArea(int rows, int cols){
+        this.contentPane.add(makeTextArea(rows, cols));
+    }
+    public JTextArea makeTextArea(int rows, int cols){
+        return new JTextArea(rows, cols);
+    }
+
+    public void addImage(String link){
+        this.contentPane.add(makeImage(link));
+    }
+    public JButton makeImage(String link){
+        Icon i = new ImageIcon(link);
+        return new JButton(i);
+    }
+    public void addRadioButtons(String[] options){
+        this.contentPane.add(makeRadioButtons(options));
+    }
+    public Box makeRadioButtons(String[] options){
+        Box b = Box.createVerticalBox();
+        ButtonGroup group = new ButtonGroup();
+        // this.contentPane.setLayout(new FlowLayout());    Don't know what this does,
+        //                                                  Can't be bothered to look it up
+        //                                                  Can be bothered to type this tho
+
+        for (String option: options){
+            JRadioButton button = new JRadioButton(option);
+            b.add(button);
+            group.add(button);
+        }
+
+        b.add(Box.createVerticalStrut(10));
+        return b;
+    }
+
+    public void addButton(String text){
+        this.contentPane.add(makeButton(text));
+    }
+    public JButton makeButton(String text){
+        return new JButton(text);
+    }
+
+    public void addLabeledRadioButtons(String label, String[] options, boolean makeVertical){
+        this.contentPane.add(makeLabeledRadioButtons(label, options, makeVertical));
+    }
+    public Box makeLabeledRadioButtons(String label, String[] options, boolean makeVertical){
+        Box b;
+
+        if (makeVertical) {
+            b = Box.createVerticalBox();
+        }else{
+            b = Box.createHorizontalBox();
+        }
+        b.add(makeLabel(label));
+        b.add(makeRadioButtons(options));
+        return b;
+    }
+
+    public String popUpInputText(String[] values){
+        return (String) JOptionPane.showInputDialog(this.contentPane, values);
+    }
+
+    public String popUpDropDown(String iconLink, String title, String message, String[] values, String initialSelection){
+        return (String) JOptionPane.showInputDialog(
+                this.contentPane,
+                message,
+                title,
+                JOptionPane.INFORMATION_MESSAGE,
+                new ImageIcon(iconLink),
+                values,
+                initialSelection);
+    }
+
+}