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How to modify a toString method of an ArrayList


How to modify a toString method of an ArrayList

By : bayat
Date : November 17 2020, 11:52 AM
it should still fix some issue I'm trying to modify a toString method in my Warehouse class so that it will return , Here is your solution new Warehouse toString method
code :
@Override
    public String toString()
    {
      String output = "";
      for(Bin b : myBins)
      {
          System.out.print(b.toString());
          if(!b.getContents().isEmpty())
          {
            for(BinItem bi : b.getContents())
            {
                System.out.println(findSKU(bi.getSKU()) + ", " + bi.toString());
            }
          }
      }
      return " ";
    }   
    private String findSKU(String SKU)
    {
        for(Footwear f : myCatalog)
        {
            if(SKU.equals(f.getSKU()))
                return f.toString();
        }
        return "";
    }
@Override
public String toString()
{
    String s = "Bin " + myName + ":\n";
    return s;    
}        
@Override
    public String toString()
    {
        int x = (int)(getSize());
        String ShoeInfo = "";
        if (getSize() % x == 0.5)
            ShoeInfo = shoeType + " - " + myStyle + " (size " + x + "\u00bd" + ")";
        else
            ShoeInfo= shoeType + " - " + myStyle + " (size " + x + ")";    
         if (!(getType().equals("Unspecified")))
            return getType() + " - " + ShoeInfo;
         else
            return ShoeInfo;
    }
Bin B0:
Dress Shoe - Loafer (size 10½), SKU 1234-13: 5
Boot - Riding (size 8), SKU 1234-5: 5
Bin B1:
Bin B2:
Dress Shoe - Wing-tip (size 10), SKU 1234-3: 10
Bin B3:
Casual Shoe - Sandal (size 9½), SKU 1234-0: 8
Bin B4:
Bin B5:
Bin B6:
Bin B7:
Bin B8:
Bin B9:


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How to override the ToString method of ArrayList of object?

How to override the ToString method of ArrayList of object?


By : The Dutta
Date : March 29 2020, 07:55 AM
This might help you You actually need to override toString() in your Person class, which will return the firstname, because, ArrayList automatically invokes the toString of the enclosing types to print string representation of elements.
code :
@Override
public String toString() {
    return this.firstname;
}
Arraylist toString() method and duplicate values

Arraylist toString() method and duplicate values


By : Mwenenchi
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You are checking if mines contains str.toString(), but adding str, which is a StringBuilder instance. Since all the objects you're adding are StringBuilders, mines can't contain a String.
You should choose which class you're going with, and stick to it. E.g., with Strings:
code :
if (!(mines.contains(str.toString()))) {
    mines.add(str.toString());
    mineCount++;
}
How to write a toString method for ArrayList?

How to write a toString method for ArrayList?


By : Tiago Tuleski
Date : March 29 2020, 07:55 AM
it helps some times As you were told, just override the toString method. For performance use StringBuilder, rather than String concatenation.
code :
import java.util.*;

public class ans{
    public static void main(String[] args){
    Bears bears = new Bears();
    bears.add(new Bear());
    bears.add(new Bear());
    bears.add(new Bear());

    System.out.println(bears);
    }
}

class Bear{
    public String toString(){
    return "I am a bear";
    }
}

class Bears{
    private ArrayList<Bear> bears = new ArrayList<Bear>();

    public void add(Bear bear){
    bears.add(bear);
    }

    public String toString(){
    StringBuilder str = new StringBuilder();
    if(!bears.isEmpty()){ // If there is no bears, return empty string
        str.append(bears.get(0)); // Append the first one
        for(int index = 1; index < bears.size(); index++){ // For all others
        str.append(" - "); // Append a separator and the bear string
        str.append(bears.get(index));
        }

    }
    return str.toString();
    }
}
toString Method ArrayList simple recursion

toString Method ArrayList simple recursion


By : Naimisha Gorentla
Date : March 29 2020, 07:55 AM
should help you out I am trying to print the contents of a list recursively and this is what I should be getting
code :
  private String toStringHelper(ArrayList<E> elements, int index) {

    if (index >= elements.size())
      return "";
    String s = toStringHelper(elements, index + 1);
    if (index < elements.size() - 1)
      s += ", ";
    s += elements.get(index).toString();
    return s;
  }
ArrayList toString() method

ArrayList toString() method


By : Marvin Ede
Date : March 29 2020, 07:55 AM
This might help you The problem is that you don't have a toString() method defined in your LinkedList class, so it inherits the toString() method from Object, which is responsible for the output you see.
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