update lab4

src/lab4/Main.java

@@ -1,7 +1,22 @@
 package lab4;
 
+import java.util.Arrays;
+
 public class Main {
     public static void main(String[] args) {
         //todo equals+hashcode
+//        todo JavaDoc
+        Furniture[] furnitureArray = {
+             new Furniture("A", 1, 1, 1, 1),
+                new Furniture("D", 1, 1, 1, 4),
+                new Furniture("B", 1, 2, 1, 1),
+                new Furniture("C", 1, 1, 3, 1),
+        };
+
+        Arrays.sort(furnitureArray, (o1, o2) -> o1.getMaterial().compareTo(o2.getMaterial()));
+//        todo print
+
+//        todo check
+        Arrays.sort(furnitureArray, (o1, o2) -> Integer.compare(o2.getPrice(), o1.getPrice()));
     }
 }