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Java

Colt Shelby
Colt Shelby
1,175 Points
Posted by Colt Shelby
Colt Shelby
1,175 Points

"actual and formal argument lists differ in length"

I'm messing around with objects and my program really does nothing right now but I'm having trouble setting up a constructor and getting the object to run. I'm trying to get this to just print the name that the user enters, but I get the error "actual and formal argument lists differ in length" I've googled it but I can't really find an answer. Thanks!

Beehive.java: 

import java.util.Random;
import java.io.Console;
import java.util.Scanner;

public class Beehive {
public static void main(String[] args) {
  Scanner scanner = new Scanner(System.in);

  System.out.println("Your queen is establishing a nest!");
  String name = scanner.nextLine();
  Beehive beehive = new Beehive(name);
  System.out.println(name);

  }
}

Beehavior.java:

public class Beehavior{
// Declare variables
  public int mBeesCount;
  public int mBroodCount;
  public int mAge;
  public String mHiveName;

 public void Beehive(String hiveName) {
 mHiveName = hiveName;
 }
}

1 Answer

Derek Markman
Derek Markman
16,291 Points
Derek Markman
Derek Markman
16,291 Points

To make your code work correctly you need to first properly set up the constructor in your Beehavior class. Then, in your Beehive class you need to create the instance variable to your Beehavior class's constructor (Not the Beehive class's constructor itself).

Beehive.java

import java.util.Random;
import java.io.Console;
import java.util.Scanner;

public class Beehive {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.println("Your queen is establishing a nest!");
        String name = scanner.nextLine();
        Beehavior beehavior = new Beehavior(name); //invoking Beehavior's constructor
        System.out.println(name);
        System.out.println(beehavior.mHiveName); //this is an alternative, but prints out the same thing.
    }
}

Beehavior.java

public class Beehavior {
    // Declare variables
    public int mBeesCount;
    public int mBroodCount;
    public int mAge;
    public String mHiveName;

    public Beehavior(String hiveName) { //Beehavior's constructor
        mHiveName = hiveName;
    }
}

Let me know if you have any other questions.