Java Community | Help. Code. Learn.•4w ago

how to check if i used a .method()

import java.util.List;
import java.util.ArrayList;

public class SpieleweltKlasse {
        public static void main(String[] args) {
                List<CharakterKlasse> gildenMitglieder = new ArrayList<>();
                gildenMitglieder.add(new Magier("Gandalf", 22));
                gildenMitglieder.add(new Krieger("Goblin Slayer", 23));
                gildenMitglieder.add(new CharakterKlasse("Bilbo",14));

                System.out.println(gildenMitglieder.size());
                System.out.println(gildenMitglieder.toString());

                System.out.println(gildenMitglieder.toString());
                gildenMitglieder.remove(0); // remove Gandalf
                System.out.println(gildenMitglieder.toString());

                gildenMitglieder.remove(1); // remove Bilbo
                System.out.println(gildenMitglieder.toString());

                gildenMitglieder.remove(0); // remove Goblin Slayer
                System.out.println(gildenMitglieder.toString());
        }
        static void (int member) {
        }
}

import java.util.List;
import java.util.ArrayList;

public class SpieleweltKlasse {
        public static void main(String[] args) {
                List<CharakterKlasse> gildenMitglieder = new ArrayList<>();
                gildenMitglieder.add(new Magier("Gandalf", 22));
                gildenMitglieder.add(new Krieger("Goblin Slayer", 23));
                gildenMitglieder.add(new CharakterKlasse("Bilbo",14));

                System.out.println(gildenMitglieder.size());
                System.out.println(gildenMitglieder.toString());

                System.out.println(gildenMitglieder.toString());
                gildenMitglieder.remove(0); // remove Gandalf
                System.out.println(gildenMitglieder.toString());

                gildenMitglieder.remove(1); // remove Bilbo
                System.out.println(gildenMitglieder.toString());

                gildenMitglieder.remove(0); // remove Goblin Slayer
                System.out.println(gildenMitglieder.toString());
        }
        static void (int member) {
        }
}

i thought of something like:

if (gildenMitglied.remove()) {
        System.out.printf("--- %d members are contributing to the guild. ---%n", gildenMitglieder.size());
        System.out.println(gildenMitglieder.toString());
        System.out.printf("%n%s has left the guild.%n", gildenMitglieder[member].toString());
}

if (gildenMitglied.remove()) {
        System.out.printf("--- %d members are contributing to the guild. ---%n", gildenMitglieder.size());
        System.out.println(gildenMitglieder.toString());
        System.out.printf("%n%s has left the guild.%n", gildenMitglieder[member].toString());
}

i want the consol output to be something like this.

--- 2 members are contributing to the guild. ---
[Krieger "Goblin Slayer", CharakterKlasse "Bilbo"]

Gandalf has left the guild.

--- 2 members are contributing to the guild. ---
[Krieger "Goblin Slayer", CharakterKlasse "Bilbo"]

Gandalf has left the guild.

but i encounted following problems: - i dont know how to direct to a single Array of the List (f.e. to direct to "Goblin Slayer") - how to check whether i used .remove(), .add(), etc. do you have any ideas / solutions?

11 Replies

JavaBot•4w ago

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Darknesslion5|ChristianOP•4w ago

one thing i thought of was, creating new methods, like

static void memberRemover (int charSelector) {
        gildenMitglieder.remove(charSelector);
        System.out.printf("--- %d members are contributing to the guild. ---%n", gildenMitglieder.size());
        System.out.println(gildenMitglieder.toString());

//but still would be stuck here
        System.out.printf("%n%s has left the guild.%n", gildenMitglieder[member].toString());
}

static void memberRemover (int charSelector) {
        gildenMitglieder.remove(charSelector);
        System.out.printf("--- %d members are contributing to the guild. ---%n", gildenMitglieder.size());
        System.out.println(gildenMitglieder.toString());

//but still would be stuck here
        System.out.printf("%n%s has left the guild.%n", gildenMitglieder[member].toString());
}

Madjosz•4w ago

You can wrap the guild member list into a class and override the methods. E.g.

public class GildenMitglieder extends ArrayList<CharakterKlasse> {
    @Override
    public CharakterKlasse remove(int index) {
        var mitglied = super.remove(index);
        System.out.printf("Gelöscht: %s\n%d Mitglieder übrig.\n", mitglied, size());
        return mitglied;
    }
}

public class GildenMitglieder extends ArrayList<CharakterKlasse> {
    @Override
    public CharakterKlasse remove(int index) {
        var mitglied = super.remove(index);
        System.out.printf("Gelöscht: %s\n%d Mitglieder übrig.\n", mitglied, size());
        return mitglied;
    }
}

Darknesslion5|ChristianOP•4w ago

ok but the task aims towards creating multiple guilds/groups/collections therefore ArrayList and letting them do some actions together as a union and some individual tasks. Like if you had 150 individual objects that you want to structure together. i think this would be bothersome to recreate for each guild or am i wrong?

Madjosz•4w ago

You are doing this once for all guilds. Then you use this class everywhere where a guild is created.

Darknesslion5|ChristianOP•4w ago

ok ok i think i got it thanks

JavaBot•4w ago

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Madjosz•4w ago

But it really depends what you actually want to acheive. Adding logging into every method call can be very noisy. So maybe it is better to not log in the class but actually at the callsite when specific actions are taken.

Darknesslion5|ChristianOP•4w ago

at the callsite? what do you mean with that

Madjosz•4w ago

Where you call the remove() method.

JavaBot•4w ago

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This post has been closed by <@245536392308981760>.

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how to check if i used a .method()

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