Added sending and receiving message queues.

src/main/java/queues/src/ReceivingQueue.java

@@ -0,0 +1,20 @@
+/**
+ * @author Aaron Moser
+ * @date 26.12.2023
+ */
+package queues.src;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+public class ReceivingQueue extends LinkedBlockingQueue<String> {
+    private static ReceivingQueue instance;
+
+    private ReceivingQueue() {}
+
+    public static ReceivingQueue getInstance() {
+        if (instance == null) {
+            instance = new ReceivingQueue();
+        }
+        return instance;
+    }
+}

src/main/java/queues/src/SendingQueue.java

@@ -0,0 +1,20 @@
+/**
+ * @author Aaron Moser
+ * @date 26.12.2023
+ */
+package queues.src;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+public class SendingQueue extends LinkedBlockingQueue<String> {
+    private static SendingQueue instance;
+
+    private SendingQueue() {}
+
+    public static SendingQueue getInstance() {
+        if (instance == null) {
+            instance = new SendingQueue();
+        }
+        return instance;
+    }
+}