update lab4

src/lab4/Furniture.java

@@ -1,9 +1,11 @@
 package lab4;
 
-/**
+
- * My class Furniture.
+///**
- */
+// * My class Furniture.
-public class Furniture<T> {
+// */
+//todo uncomment /*<Furniture>*/
+public /*abstract*/ class Furniture/*<T>*/ implements Comparable<Furniture> {
     /**
      *
      */
@@ -13,14 +15,13 @@ public class Furniture<T> {
     private int width;
     private int price;
 
-    private T additional;
+//    private T additional;
 
-    public void setAdditional(T additional) {
+//    public void setAdditional(T additional) {
-        this.additional = additional;
+//        this.additional = additional;
-    }
+//    }
 
     /**
-     *
      * @param material
      * @param length
      * @param height
@@ -74,4 +75,19 @@ 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);
+//    }
+
+    @Override
+    public int compareTo(Furniture o) {
+        final int priceDifference = price - o.price;
+        return priceDifference != 0
+                ? priceDifference
+//                : -material.compareTo(o.material);
+                : o.material.compareTo(material);
+    }
 }

src/lab4/Main.java

@@ -1,14 +1,19 @@
 package lab4;
 
 import java.util.Arrays;
+import java.util.Comparator;
 
 public class Main {
     public static void main(String[] args) {
-//        todo Comparable
+        System.out.println(Integer.MIN_VALUE - 1);
         //todo equals+hashcode
 //        todo JavaDoc
-        final Furniture<Furniture> furniture1 = new Furniture<>("A", 1, 1, 1, 1);
+        final Furniture/*<Furniture>*/ furniture1 = new Furniture("A", 1, 1, 1, 1);
-        final Furniture<String> furniture2 = new Furniture<>("D", 1, 1, 1, 4);
+        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));
+//        furniture1.setAdditional(new Furniture("Y", 1, 1, 1, 0));
-        furniture2.setAdditional("new Furniture(\"Y\", 1, 1, 1, 0)");
+//        furniture2.setAdditional("new Furniture(\"Y\", 1, 1, 1, 0)");
 
 //        furnitureArray[0].setMaterial("E");
 
@@ -41,5 +46,39 @@ public class Main {
         }
 
         System.out.println("+++++++++++++");
+
+        /*Arrays.sort(furnitureArray);
+        for (Furniture furniture : furnitureArray) {
+            System.out.println(furniture);
+        }
+
+        System.out.println("+++++++++++++");*/
+
+        /*Arrays.sort(furnitureArray, new PriceFurnitureComparator());
+        for (Furniture furniture : furnitureArray) {
+            System.out.println(furniture);
+        }
+
+        System.out.println("+++++++++++++");*/
+
+        /*Arrays.sort(furnitureArray, new Comparator<Furniture>() {
+            @Override
+            public int compare(Furniture o1, Furniture o2) {
+                return o1.getMaterial().compareTo(o2.getMaterial());
+            }
+        });*/
+//        Arrays.sort(furnitureArray, (o1, o2) -> o1.getMaterial().compareTo(o2.getMaterial()));
+//        Arrays.sort(furnitureArray, Comparator.comparing(Furniture::getMaterial));
+//        Arrays.sort(furnitureArray, Comparator.comparing(Furniture::getMaterial).reversed());
+//        Arrays.sort(furnitureArray, Comparator.comparing(Furniture::getPrice)
+//        .thenComparing(Furniture::getMaterial).reversed());
+        Arrays.sort(furnitureArray, Comparator.comparing(Furniture::getPrice)
+                .thenComparing(Comparator.comparing(Furniture::getMaterial).reversed()));
+
+        for (Furniture furniture : furnitureArray) {
+            System.out.println(furniture);
+        }
+
+        System.out.println("+++++++++++++");
     }
 }

src/lab4/MaterialFurnitureComparator.java

@@ -0,0 +1,11 @@
+package lab4;
+
+import java.util.Comparator;
+
+public class MaterialFurnitureComparator implements Comparator<Furniture> {
+
+    @Override
+    public int compare(Furniture o1, Furniture o2) {
+        return o1.getMaterial().compareTo(o2.getMaterial());
+    }
+}

src/lab4/PriceFurnitureComparator.java

@@ -0,0 +1,11 @@
+package lab4;
+
+import java.util.Comparator;
+
+public class PriceFurnitureComparator implements Comparator<Furniture> {
+
+    @Override
+    public int compare(Furniture o1, Furniture o2) {
+        return o1.getPrice() - o2.getPrice();
+    }
+}