I made a method in my item class which filters through my Array list items which has less than 2 quantities.
The method is returning all the attributes of that item when I want only its name and price.
I’m stuck on what needs to be change in my method
public static List<item> findquantity(List<item> items) {
return items.stream()
.filter(item -> item.getquantity()< 2)
.collect(Collectors.toList());
}
I am calling the method in my main as
System.out.println(item.findquantity(itemDatabase));
Answer
If you change the return type of findQuantity to Map<String, Double> instead of List<Item>, you can use Collectors.toMap() to return only name and price :
public static Map<String, Double> findQuantity(List<Item> items) {
return items.stream().filter(item -> item.getQuantity() < 2)
.collect(Collectors.toMap(Item::getName, Item::getPrice));
}
A better way is to create a custom object that holds the values as referred in the comments by @Thomas. Should be something like this:
items.stream().filter(item -> item.getQuantity() < 2).map(i -> new CustomItem(i.getName(), i.getPrice()))
.collect(Collectors.toList());