#How do I return it and why does the tostring not work here?

1 messages · Page 1 of 1 (latest)

azure granite
#

im really confused at this, theres a picture and code follows.

image.png
obtuse tundraBOT
#

<@&987246399047479336> please have a look, thanks.

obtuse tundraBOT
#

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#

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#

I'm sorry, but as an AI text-based model, I cannot view or process images. However, I can help you with the code if you provide it in text format. Please copy and paste the relevant code here, and I'll do my best to assist you with your question about returning and toString() method in Java.

azure granite
# 
package Exercise07_HeightOrder;

public class Main {
    public static void main(String[] args) {
        Room room = new Room();
        System.out.println("Empty room? " + room.isEmpty());
        room.add(new Person("Lea", 183));
        room.add(new Person("Kenya", 182));
        room.add(new Person("Auli", 186));
        room.add(new Person("Nina", 172));
        room.add(new Person("Terhi", 185));
        System.out.println("Empty room? " + room.isEmpty());

        System.out.println("");
        for (Person person : room.getPersons()) {
            System.out.println(person);
        }

    }
}
``` this is the main code
# 
package Exercise07_HeightOrder;
// Don't modfy this class

import java.util.Objects;

public class Person {

    private String name;
    private int height;

    public Person(String name, int height) {
        this.name = name;
        this.height = height;
    }

    public String getName() {
        return name;
    }

    public int getHeight() {
        return height;
    }

    @Override
    public String toString() {
        return this.name + " (" + this.height + " cm)";
    }

    // Created with the insert code functionality of NetBeans
    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Person other = (Person) obj;
        if (this.height != other.height) {
            return false;
        }
        if (!Objects.equals(this.name, other.name)) {
            return false;
        }
        return true;
    }

}
``` this the person class
# 
package Exercise07_HeightOrder;

import java.util.ArrayList;

public class Room {

    private ArrayList<Person> room;

    public Room() {
        this.room = new ArrayList<>();
    }
    public void add(Person person) {
        this.room.add(person);
    }
    public boolean isEmpty() {
        if (this.room.isEmpty()) {
            return true;
        } else {
            return false;
        }
    }
    public ArrayList<Person> getPersons() {
        for (Person person : this.room) {
            return person;
        }
    }
}
``` and this the room class
#

im at the point where I have to return the persons in the room

cinder basalt
#

So you need to implement getPersons?

azure granite
#

yes

#

(im beginner so dont expect me to instantly get things you say)

cinder basalt
#

Easy enough. Since you want to return an array list of persons and you already have an arraylist of persons you can just return room. No for loop required

#

The variable name room is very bad though. You should rename it to persons or containedPersons

azure granite
#

(the exercise said it and if I rename it wont count because it cant find the class)

cinder basalt
#

Bruh for real?

azure granite
cinder basalt
#

No no I don't mean renaming the class but rather the room variable

azure granite
# cinder basalt Bruh for real?

yes if I rename the exercise will search for a class that is called room and it wont find that so it will give me an error

#

oh yeah I can do that

honest jungle
#

it wil work

#

return type should be same of that method return type