diff --git a/src/lab4/Furniture.java b/src/lab4/Furniture.java
index f7ecea1..d8dce60 100644
--- a/src/lab4/Furniture.java
+++ b/src/lab4/Furniture.java
@@ -1,9 +1,11 @@
 package lab4;
 
-/**
- * My class Furniture.
- */
-public class Furniture<T> {
+
+///**
+// * My class Furniture.
+// */
+//todo uncomment /*<Furniture>*/
+public /*abstract*/ class Furniture/*<T>*/ implements Comparable/*<Furniture>*/{
     /**
      *
      */
@@ -13,11 +15,11 @@ public class Furniture<T> {
     private int width;
     private int price;
 
-    private T additional;
+//    private T additional;
 
-    public void setAdditional(T additional) {
-        this.additional = additional;
-    }
+//    public void setAdditional(T additional) {
+//        this.additional = additional;
+//    }
 
     /**
      *
@@ -74,4 +76,10 @@ public class Furniture<T> {
                 ", price=" + price +
                 '}';
     }
+
+    @Override
+    public int compareTo(Object o) {
+        return /*this.*/price - ((Furniture) o).price;
+//        return /*this.*/material.compareTo(((Furniture) o).material);
+    }
 }
diff --git a/src/lab4/Main.java b/src/lab4/Main.java
index 67b3fb7..76c1ce9 100644
--- a/src/lab4/Main.java
+++ b/src/lab4/Main.java
@@ -4,11 +4,16 @@ import java.util.Arrays;
 
 public class Main {
     public static void main(String[] args) {
+        System.out.println(Integer.MIN_VALUE - 1);
 //        todo Comparable
         //todo equals+hashcode
 //        todo JavaDoc
-        final Furniture<Furniture> furniture1 = new Furniture<>("A", 1, 1, 1, 1);
-        final Furniture<String> furniture2 = new Furniture<>("D", 1, 1, 1, 4);
+        final Furniture/*<Furniture>*/ furniture1 = new Furniture("A", 1, 1, 1, 1);
+        final Furniture/*<String>*/ furniture2 = new Furniture("F", 1, 1, 1, 4);
+
+        System.out.println(furniture1.compareTo(furniture2));
+        System.out.println(furniture1.compareTo("furniture2"));
+
         Furniture[] furnitureArray = {
                 furniture1,
                 furniture2,
@@ -22,8 +27,8 @@ public class Main {
         }
         System.out.println("+++++++++++++");
 
-        furniture1.setAdditional(new Furniture("Y", 1, 1, 1, 0));
-        furniture2.setAdditional("new Furniture(\"Y\", 1, 1, 1, 0)");
+//        furniture1.setAdditional(new Furniture("Y", 1, 1, 1, 0));
+//        furniture2.setAdditional("new Furniture(\"Y\", 1, 1, 1, 0)");
 
 //        furnitureArray[0].setMaterial("E");