[Solved] Trouble Adding to an Object in an ArrayList

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Putting your arraylist inside a method means it can only be accessed by the method it is in and is lost when the method is finished running. You have two options.

  1. Change the return type of your method as an arraylist and return and manipulate your arraylist

  2. Create the arraylist outside of a method global to the whole class.

This code block should help:

 public class mVentoryHome extends javax.swing.JFrame {
      private static ArrayList <ProductInfo> Inventory = new ArrayList<ProductInfo>();
}

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solved Trouble Adding to an Object in an ArrayList