ProductImplementation.java

package Com.Project.src;
import java.util.ArrayList;
import java.util.List;


class Product {
	int id;
	String name;
	int price;
	
	public Product(int id, String name, int price) {
		super();
		this.id = id;
		this.name = name;
		this.price = price;
	}
	@Override
	public String toString() {
		
		return "Product [id=" + id + ", name=" + name + ", price=" + price + "]";
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	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;
	}
}
public class ProductImplementation {
	double sumOfPrice(ArrayList<Product> productList) {
	    int sum=0;
	for(int i=0;i<productList.size();i++)
	    sum+=productList.get(i).getPrice();
     return sum;
	}
	float  maxPrice(ArrayList<Product> productList) {
		int max=productList.get(0).getPrice();
		for(int i=1;i<productList.size();i++){
		if(max<productList.get(i).getPrice())
		max=productList.get(i).getPrice();
	}
		return max;
		
	}
	float  minPrice(ArrayList<Product> productList) {
			int min=productList.get(0).getPrice();
		for(int i=1;i<productList.size();i++){
		if(min>productList.get(i).getPrice())
		min=productList.get(i).getPrice();
		}	
		return min;
	}
	List<String> getProductNameList(ArrayList<Product> productList) {
		ArrayList<String> namesList=new ArrayList<>();
		for(int i=0;i<productList.size();i++){
		    namesList.add(productList.get(i).getName());
		}
		return namesList;
	}
	public static void main(String[] args) {
		ArrayList plist=new ArrayList<Product>();
		System.out.println("__________Product List__________");
		plist.add(new Product(20,"Bag",897));
		plist.add(new Product(21,"Book",87));
		plist.add(new Product(22,"Table",89));
		plist.add(new Product(23,"pen",597));
		ProductImplementation pa=new ProductImplementation();
		System.out.println(pa.getProductNameList(plist));
		System.out.println("Sum of Price:"+pa.sumOfPrice(plist));
		System.out.println("Max Price:"+pa.maxPrice(plist));
		System.out.println("Min Price:"+pa.minPrice(plist));
	}
}