HomeWork

Apple.java

@@ -0,0 +1,13 @@
+package ru.gb.lesson3;
+
+public class Apple extends Fruit {
+    public Apple() {
+        super(1.0f);
+
+    }
+
+    @Override
+    public String toString() {
+        return "Apple{" + "weight= " + weight + "}";
+    }
+}

Box.java

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+package ru.gb.lesson3;
+
+import java.util.ArrayList;
+import java.util.Objects;
+
+public class Box<T extends Fruit> {
+    private ArrayList<T> fruits = new ArrayList<>();
+
+    public Box() {
+            }
+    public Box(ArrayList<T> fruits) {
+        this.fruits = fruits;
+    }
+    public void addFruits(ArrayList<T> newFruits) {
+        if (newFruits != null) {
+            fruits.addAll(newFruits);
+        }
+    }
+    public Float getWeight() {
+        float result = 0.0f;
+        if (this.fruits.isEmpty()) {
+            return result;
+        }
+        result = fruits.size() * fruits.get(0).weight;
+        return result;
+            }
+    public boolean compare(Box<? extends Fruit> otherBox) { return otherBox.getWeight().equals(this.getWeight());
+    }
+    public void toAnotherBox(Box<T> box) {
+        if (this.fruits != null) {
+            box.addFruits(this.fruits);
+            this.fruits.clear();
+        }
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Box<?> box = (Box<?>) o;
+        return Objects.equals(fruits, box.fruits);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(fruits);
+    }
+
+    @Override
+    public String toString() {
+        return "Box{" +
+                "fruits=" + fruits +
+                '}';
+    }
+}
+

Fruit.java

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+package ru.gb.lesson3;
+
+public class Fruit {
+    public Float weight;
+
+    public Fruit(Float weight) {
+        this.weight = weight;
+    }
+
+}

Main.java

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+package ru.gb.lesson3;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Box<Apple> appleBox = new Box<>(new ArrayList<>(Arrays.asList(new Apple(), new Apple(), new Apple())));
+        Box<Apple> newAppleBox = new Box<>();
+        Box<Orange> orangeBox = new Box<>(new ArrayList<>(Arrays.asList(new Orange(), new Orange())));
+        Box<Orange> newOrangeBox = new Box<>(new ArrayList<>(Arrays.asList(new Orange())));
+
+        System.out.println("Apple box: " + appleBox);
+        System.out.println("New Apple box: " + newAppleBox);
+        System.out.println("Orange box: " + orangeBox);
+        System.out.println("New Orange box: " + newOrangeBox);
+        appleBox.addFruits(new ArrayList<>(Arrays.asList(new Apple(), new Apple())));
+        appleBox.toAnotherBox(newAppleBox);
+        System.out.println();
+        System.out.println("New Apple box after add apples: " + newAppleBox);
+        System.out.println("Apple box after remove apples: " + appleBox);
+        System.out.println();
+        System.out.println("New Apple box weight: " + newAppleBox.getWeight());
+        System.out.println("Apple box weight: " + appleBox.getWeight());
+        System.out.println("New Orange box weight: " + newOrangeBox.getWeight());
+        System.out.println("Orange box weight: " + orangeBox.getWeight());
+        System.out.println();
+        System.out.println(newAppleBox.compare(orangeBox));
+        newAppleBox.addFruits(new ArrayList<>(Arrays.asList(new Apple(), new Apple())));
+        //orangeBox.addFruits(new ArrayList<>(Arrays.asList(new Orange(), new Orange())));
+        newOrangeBox.addFruits(new ArrayList<>(Arrays.asList(new Orange(), new Orange())));
+        System.out.println("New Apple box weight: " + newAppleBox.getWeight());
+        System.out.println("Orange box weight: " + orangeBox.getWeight());
+        System.out.println(newAppleBox.compare(orangeBox));
+        //newOrangeBox.toAnotherBox(orangeBox);
+        orangeBox.toAnotherBox(newOrangeBox);
+        //System.out.println("Orange box weight: " + orangeBox.getWeight());
+        System.out.println("Apple box: " + appleBox);
+        System.out.println("New Apple box: " + newAppleBox);
+        System.out.println("Orange box: " + orangeBox);
+        System.out.println("New Orange box: " + newOrangeBox);
+        System.out.println();
+        System.out.println("New Apple box weight: " + newAppleBox.getWeight());
+        System.out.println("New Orange box weight: " + newOrangeBox.getWeight());
+        System.out.println("Apple box weight: " + appleBox.getWeight());
+        System.out.println("Orange box weight: " + orangeBox.getWeight());
+        System.out.println();
+
+        Integer[] ints = {1, 2, 3, 4, 5, 6};
+        Swap<Integer> integerSwap = new Swap<>();
+        integerSwap.swap(ints, 2, 5);
+
+        for (Integer i : ints) {
+            System.out.print(i + " ");
+        }
+        System.out.println();
+
+        Float[] floats = {1.6f, 2.4f, 3.7f, 4.1f, 5.8f};
+        Swap<Float> floatSwap = new Swap<>();
+        floatSwap.swap(floats, 0, 4);
+
+        for (Float i: floats) {
+            System.out.print(i + " ");
+        }
+    }
+}

Orange.java

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+package ru.gb.lesson3;
+
+public class Orange extends Fruit {
+    public Orange() {
+        super(1.5f);
+
+    }
+
+    @Override
+    public String toString() {
+        return "Orange{ " + "weight= " + weight + "}";
+    }
+}

Swap.java

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+package ru.gb.lesson3;
+
+public class Swap<T> {
+    public void swap(T[] array, int first, int second) {
+        T buffer = array[first];
+        array[first] = array[second];
+        array[second] = buffer;
+    }
+}