alles Funktioniert

src/UE21_290425_Bruecke/Car.java

@@ -3,19 +3,20 @@ package UE21_290425_Bruecke;
 import java.time.LocalTime;
 
 public class Car extends Thread {
-    private static final int crossingTime = 50_000;
-    LocalTime arrivingTime;
-    Guard guard;
+    public Long index;
+    public LocalTime arrivingTime;
+    public Guard guard;
 
-    public Car(Guard guard) {
+    public Car(Guard guard, long index) {
         this.guard = guard;
         this.arrivingTime = LocalTime.now();
+        this.index = index;
     }
 
     @Override
     public void run() {
         try {
-            Thread.sleep(crossingTime);
+            Thread.sleep(Variables.CROSSING_TIME);
             guard.leaving();
         } catch (InterruptedException e) {
             throw new RuntimeException(e);

src/UE21_290425_Bruecke/Generator.java

@@ -1,26 +1,27 @@
 package UE21_290425_Bruecke;
 
 public class Generator extends Thread {
-    public static boolean RESUME = true;
-    private static Guard guard = new Guard();
-    private static Generator generator = new Generator();
+    private static final Guard guard = new Guard();
+    private static final Generator generator = new Generator();
+    private static long carIndex = 0;
 
     public static void main(String[] args) {
+        System.out.println("Statistics:");
         generator.start();
         guard.start();
     }
 
     @Override
     public void run() {
-        while (Generator.RESUME) {
+        while (guard.waitingCars.size() <= Variables.MAX_WAITING_CARS) {
             try {
-                Thread.sleep((int) (Math.random() * 5 + 1) * 1000L);
+                Thread.sleep((int) (Math.random() * Variables.MAX_CAR_INTERVAL + 1) * 1000L);
             } catch (InterruptedException e) {
                 throw new RuntimeException(e);
             }
-            Car car = new Car(guard);
+            Car car = new Car(guard, carIndex++);
             guard.arriving(car);
-            System.out.println(guard);
-        }
+        }
+        
     }
 }

src/UE21_290425_Bruecke/Guard.java

@@ -6,56 +6,48 @@ import java.util.List;
 import java.util.Set;
 
 public class Guard extends Thread {
-    private List<Car> waitingCars = new ArrayList<>();
-    private Set<Integer> waitingTimes = new HashSet<>();
-    private int carsOnBridge = 0;
+    private static int carsOnBridge = 0;
+    public final List<Car> waitingCars = new ArrayList<>();
+    public final Set<Integer> waitingTimes = new HashSet<>();
 
     public synchronized void leaving() {
-        this.carsOnBridge--;
+        carsOnBridge--;
     }
 
     public synchronized void arriving(Car car) {
-        System.out.println("add");
         this.waitingCars.add(car);
-        System.out.println(this.waitingCars.size());
+        notify(); // Weckt den Guard auf
     }
 
+
     public synchronized void crossing(Car car) {
-        System.out.println("crossing");
-        this.carsOnBridge++;
+        carsOnBridge++;
         this.waitingCars.remove(car);
         car.start();
     }
 
     @Override
-    public String toString() {
-        StringBuilder output = new StringBuilder("""
-                Statistics:
-                waiting:\s
-                """);
-        for (int i = 0; i < waitingCars.size(); i++) {
-            output.append("Car").append(i).append(": \t");
-            output.append(waitingCars.get(i).arrivingTime.getHour());
-            output.append(":").append(waitingCars.get(i).arrivingTime.getMinute());
-            output.append(":").append(waitingCars.get(i).arrivingTime.getSecond()).append("\n");
-        }
-        output
-//                .append("waitingTimes: ").append(waitingTimes)
-                .append("carsOnBridge: ").append(carsOnBridge);
+    public synchronized String toString() {
+        StringBuilder output = new StringBuilder("Cars waiting:\n");
+        if (waitingCars.isEmpty()) output = new StringBuilder("No Cars waiting:");
+        for (Car car : waitingCars)
+            output.append(String.format("Car%d:\t%02d:%02d:%02d\t", car.index, car.arrivingTime.getHour(), car.arrivingTime.getMinute(), car.arrivingTime.getSecond()));
+        output.append("\nCars on Bridge: ").append(carsOnBridge).append("\n");
         return output.toString();
     }
 
+
     @Override
     public void run() {
-        while (Generator.RESUME) {
-//                if (waitingCars.isEmpty()) continue;
-            if (this.carsOnBridge < 10) {
-//                    System.out.println("<10");
-//                    System.out.println(waitingCars.size());
-                if (!this.waitingCars.isEmpty()) {
-                    System.out.println("crossing");
+        long lastPrint = System.currentTimeMillis();
+        while (this.waitingCars.size() <= Variables.MAX_WAITING_CARS) {
+            synchronized (this) {
+                if (carsOnBridge < Variables.MAX_CARS_ON_BRIDGE && !this.waitingCars.isEmpty())
                     crossing(this.waitingCars.getFirst());
             }
+            if (System.currentTimeMillis() - lastPrint >= Variables.PRINT_INTERVAL) {
+                System.out.println(this);
+                lastPrint = System.currentTimeMillis();
             }
         }
     }

src/UE21_290425_Bruecke/Variables.java

@@ -0,0 +1,9 @@
+package UE21_290425_Bruecke;
+
+public class Variables {
+    public static final int MAX_WAITING_CARS = 2;
+    public static final int MAX_CAR_INTERVAL = 5;
+    public static final int CROSSING_TIME = 30_000;
+    public static final int MAX_CARS_ON_BRIDGE = 3;
+    public static final int PRINT_INTERVAL = 2_000;
+}