Java8 Tasks added

Java8 Tasks/Product/.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

Java8 Tasks/Product/Products.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Java8 Tasks/Product/src/Main.java

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+public class Main {
+    public static void main(String[] args) {
+        Product product = new Product();
+        // exercise 1
+        System.out.println(product.getBookCategory());
+
+        // exercise 2
+        System.out.println(product.getBooksWithPriceLessThan100());
+
+        // exercise 3
+        System.out.println(product.getToyCategory());
+
+        // exercise 4
+        System.out.println(product.getCheapestBook());
+    }
+}

Java8 Tasks/Product/src/Product.java

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+import javafx.print.Collation;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class Product {
+    private int productId;
+    private String productName, category;
+    private double productPrice;
+
+    public Product() {}
+    public Product(int productId, String productName, String category, double productPrice) {
+        this.productId = productId;
+        this.productPrice = productPrice;
+        this.productName = productName;
+        this.category = category;
+    }
+
+    public int getProductId() {
+        return productId;
+    }
+
+    public void setProductId(int productId) {
+        this.productId = productId;
+    }
+
+    public String getProductName() {
+        return productName;
+    }
+
+    public void setProductName(String productName) {
+        this.productName = productName;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public double getProductPrice() {
+        return productPrice;
+    }
+
+    public void setProductPrice(double productPrice) {
+        this.productPrice = productPrice;
+    }
+
+    @Override
+    public String toString() {
+        return "Product{" +
+                "productId=" + productId +
+                ", productName='" + productName + '\'' +
+                ", category='" + category + '\'' +
+                ", productPrice=" + productPrice +
+                '}';
+    }
+    public Product withPrice(int id, String name, String category, double price){
+        if(price == this.productPrice) return this;
+        else return new Product(id,name,category, price);
+    }
+
+    public List<Product> addDummyData(){
+        List<Product> products = new ArrayList<>();
+        Collections.addAll(products,
+                new Product(1, "omnis quod consequatur", "Games", 184.83),
+                new Product(2, "vel libero suscipit", "Toys", 12.66),
+                new Product(3, "non nemo iure", "Grocery", 498.02),
+                new Product(4, "voluptatem voluptas aspernatur", "Toys", 536.80),
+                new Product(5, "animi cum rem", "Games", 458.20),
+                new Product(6, "dolorem porro debitis", "Toys", 146.52),
+                new Product(7, "aspernatur rerum qui", "Books", 656.42),
+                new Product(8, "deleniti earum et", "Baby", 41.46),
+                new Product(9, "voluptas ut quidem", "Books", 697.57),
+                new Product(10, "eos sed debitis", "Baby", 366.90),
+                new Product(11, "laudantium sit nihil", "Toys", 95.50),
+                new Product(12, "ut perferendis corporis", "Grocery", 302.19),
+                new Product(13, "sint voluptatem ut", "Toys", 295.37),
+                new Product(14, "quos sunt ipsam", "Grocery", 534.64),
+                new Product(15, "qui illo error", "Baby", 623.58),
+                new Product(16, "aut ex ducimus", "Books", 551.39),
+                new Product(17, "accusamus repellendus minus", "Books", 240.58),
+                new Product(18, "aut accusamus quia", "Baby", 881.38),
+                new Product(19, "doloremque incidunt sed", "Games", 988.49),
+                new Product(20, "libero omnis velit", "Baby", 177.61),
+                new Product(21, "consectetur cupiditate sunt", "Toys", 95.46),
+                new Product(22, "itaque ea qui", "Baby", 677.78),
+                new Product(23, "non et nulla", "Grocery", 70.49),
+                new Product(24, "veniam consequatur et", "Books", 893.44),
+                new Product(25, "magnam adipisci voluptate", "Grocery", 366.13),
+                new Product(26, "reiciendis consequuntur placeat", "Toys", 359.27),
+                new Product(27, "dolores ipsum sit", "Toys", 786.99),
+                new Product(28, "ut hic tempore", "Toys", 316.09),
+                new Product(29, "quas quis deserunt", "Toys", 772.78),
+                new Product(30, "excepturi nesciunt accusantium", "Toys", 911.46)
+        );
+        return products;
+    }
+
+    public List<Product> getBookCategory(){
+        List <Product> books = new ArrayList<>();
+        for(Product p : addDummyData())
+            if(p.category.equals("Books") )
+                books.add(p);
+        return books;
+    }
+
+    public List<Product> getBooksWithPriceLessThan100(){
+        List <Product> books = new ArrayList<>();
+        for(Product p : addDummyData())
+            if(p.productPrice < 100 )
+                books.add(p);
+        return books;
+    }
+    public List<Product> getToyCategory(){
+        List <Product> books = new ArrayList<>();
+        for(Product p : addDummyData())
+            if(p.category.equals("Toys")){
+                // apply 10% discount
+                p.productPrice = p.productPrice * (10/100);
+                books.add(p);
+            }
+        return books;
+    }
+
+    public double getCheapestBook(){
+        List <Double> prices = new ArrayList<>();
+        for(Product p : getBookCategory())
+            prices.add(p.productPrice);
+        return Collections.min(prices);
+    }
+
+}