access elements in array of arraylist

Question

I am printing an array of arraylist which contains 2d array.

ArrayList<ArrayList<ArrayList<Array>>> sols;

I am trying to print this:

System.out.print(sols.get(0).get(0).get(0));

was expecting a 2d array as it was the lowest level of the variable

I get this instead

app.Array@42037252

How can I print the specified 2d array?

EDIT

this is my Array class

public class Array {
 int[][] array;
 public Array(int[][] initialArray){
 array = initialArray;
 }
}

• moffeltje: You're not being very specific about the case.. How do you want to store a solution in an array?
• FriedSaucePots: The class app.Array does not implement toString() so the default Object's toString is being called and "class@hexhashcode" is being printed. Did you write the "Array" class?
• ashosborne1: @CrazyGirl can you post the Array class code

Answer 1

The string you are getting is the default representation of your Array object provided by Object.toString() method.

I suppose app.Array is a custom class implemented by you.

So to print out your 2d array in a more intuitive way you need to override the toString() method in your class.

For example:

@Override
public String toString(){
 return Arrays.deepToString(array);
}