Update GenericMethodEx.java

janbodnar · web-flow · commit b0557f40fab4 · 2018-04-26T08:27:22.000+02:00
diff --git a/generics/GenericMethodEx.java b/generics/GenericMethodEx.java
@@ -1,8 +1,69 @@
 package com.zetcode;
 
 import java.util.HashSet;
+import java.util.Objects;
 import java.util.Set;
 
+// Generic method
+
+class Car {
+
+    private String name;
+    private int price;
+
+    public Car(String name, int price) {
+        this.name = name;
+        this.price = price;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void setPrice(int price) {
+        this.price = price;
+    }
+
+    @Override
+    public String toString() {
+        return "Car{" + "name=" + name + ", price=" + price + '}';
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 5;
+        hash = 79 * hash + Objects.hashCode(this.name);
+        hash = 79 * hash + this.price;
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Car other = (Car) obj;
+        if (this.price != other.price) {
+            return false;
+        }
+        return Objects.equals(this.name, other.name);
+    }
+}
+
 public class GenericMethodEx {
 
     public static void main(String[] args) {
@@ -21,6 +82,20 @@ public static void main(String[] args) {
         
         Set<String> res = union(words, words2);
         System.out.println(res);
+        
+        Set<Car> cars = new HashSet<>();
+        cars.add(new Car("Volvo", 23144));
+        cars.add(new Car("Mazda", 20500));
+        cars.add(new Car("Mercedes", 50000));
+        
+        Set<Car> cars2 = new HashSet<>();
+        cars.add(new Car("Volvo", 23144));
+        cars.add(new Car("Mazda", 20500));
+        cars.add(new Car("Skoda", 9800));
+        
+        Set<Car> res2 = union(cars, cars2);
+        res2.forEach(System.out::println);
+        
     }
     
     public static <E> Set<E> union(Set<E> s1, Set<E> s2) {
