Would appreciate some help with this.

Question

Hello, I have a class that looks like this:
import extra.*;
public class Bokhylla {
int x;
public Bok[] b?cker = new Bok[x];
public Bokhylla(int antal) {
x = antal;
The problem is that I want x in my array to be set from the constructor, but the code above does not work. It doesn't matter how big "antal" is, when I try to set a reference to an object in position 0 in Bok[] the program complains that it is out of boundary.

Answer 1

Hello, I have a class that looks like this:
import extra.*;
public class Bokhylla {
int x;
public Bok[] b?cker = new Bok[x];
public Bokhylla(int antal) {
x = antal;
}You should move the Bok[] instantiation into the constructor after x is asigned the value of antal.
import extra.*;
public class Bokhylla {
  int x;
  public Bok[] bicker; //or whatever that is, doesn't show right here
  public Bokhylla (int antal) {
      x = antal;
      bicker = new Bok[x];
    //or just use bicker = new Bok[antal]; and forget about x
}None of the objects in the bicker array will be accessible until you instantiate them as well, so you will have to do:
for (int count = 0; count < antal; count++)
   bicker[count] = new Bok();