Java find the largest attribute between different objects of the same class [duplicate]

Question

I'm trying to find which warehouse has the greatest number of each part. I set up a super class defined below.

 public abstract class warehouse {
    int part1;
    int part2;
    int part3;
    int part4;
    int part5;
    String name;
    File inventory = new File("Inventory.txt");
    File transactions = new File("Transactions.txt");
    public warehouse() throws FileNotFoundException {

    }

    public int getPart1() {
        return part1;
    }
    public int getPart2(){
        return part2;
    }
    public int getPart3() {
        return part3;
    }
    public int getPart4() {
        return part4;
    }
    public int getPart5() {
        return part5;
    }

I have six subclasses, I'll show the definition of one, they're all the same except for the name field.

import java.io.FileNotFoundException;
public class Atlanta extends warehouse {

    public Atlanta() throws FileNotFoundException {
        name = "Atlanta";
    }
}

I am trying to compare for example, part1 between all six classes. I set up the functions to return the values of each of the parts but it would really suck to do if (Atlanta.getPart1() > Chicago.getPart1() && Atlanta.getPart1()> Denver.getPart1())... is there a way I can find which object has the greatest value of each attributes without having to write that out for every combination and every part?

Any help would be greatly appreciated.

Why a subclass for each location? Why not just a different instance of warehouse and some sort of collection class to hold all your warehouses. Then the collection class can have a method to tell you which warehouse has the most "part 4s" etc. — John3136
– John3136, Commented Aug 10, 2016 at 1:58

vsminkov · Accepted Answer · 2016-08-10 01:59:52Z

1

You can use Collection.max() with proper Comparator based on abstract class

Collections.max(
  Arrays.asList(new Atlanta(), new Pennsylvania(), ...),
  Comparator.comparing(warehouse::getPart1)
);

answered Aug 10, 2016 at 1:59

vsminkov

11.3k3 gold badges40 silver badges50 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Java find the largest attribute between different objects of the same class [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related