diff --git a/src/main/java/hse/java/lectures/lecture6/tasks/queue/BoundedBlockingQueue.java b/src/main/java/hse/java/lectures/lecture6/tasks/queue/BoundedBlockingQueue.java
index 5c686cff..c335f5fd 100644
--- a/src/main/java/hse/java/lectures/lecture6/tasks/queue/BoundedBlockingQueue.java
+++ b/src/main/java/hse/java/lectures/lecture6/tasks/queue/BoundedBlockingQueue.java
@@ -1,25 +1,51 @@
 package hse.java.lectures.lecture6.tasks.queue;
 
-public class BoundedBlockingQueue<T> {
+import java.util.LinkedList;
 
+public class BoundedBlockingQueue<T> {
+    private final LinkedList<T> list = new LinkedList<>();
+    private int capacity;
 
     public BoundedBlockingQueue(int capacity) {
-
+        if (capacity <= 0) {
+            throw new IllegalArgumentException("capacity must be positive");
+        }
+        this.capacity = capacity;
     }
 
-    public void put(T item) {
-
+    public void put(T item) throws InterruptedException {
+        if (item == null) {
+            throw new NullPointerException("item must be non-null");
+        }
+
+        synchronized (this) {
+            while (list.size() == capacity) {
+                this.wait();
+            }
+            list.addLast(item);
+            notifyAll();
+        }
     }
 
-    public T take() {
-        return null;
+    public T take() throws InterruptedException {
+        synchronized (this) {
+            while (list.isEmpty()) {
+                this.wait();
+            }
+            T item = list.getFirst();
+            list.removeFirst();
+            notifyAll();
+            return item;
+        }
     }
 
     public int size() {
-        return 0;
+        synchronized (this) {
+            return list.size();
+        }
     }
 
     public int capacity() {
-        return 0;
+        return this.capacity;
     }
 }