internally create a new array and then copy over the data from the existing. While elements can be added and removed from an ArrayList whenever you want. The difference between a built-in array and an ArrayList in Java, is that the size of an array cannot be modified (if you want to add or remove elements to/from an array, you have to create a new one). the array every time an item is added using 'ReDim Preserve', which would. The ArrayList class is a resizable array, which can be found in the java.util package. When using arrays you'd have to redimension. When saving, you will need to clear the collection before adding the text values back in order not to keep appending to the collection: My. Use an arraylist or a strongly-typed collection (see class 'DictionaryBase', or 'List (Of T)' in. The above ensures that if no data is available then the collection will be initialised, otherwise, the values from each element of the collection will be assigned to your buttons text properties. Insertion and deletion operation in ArrayList is slower than an Array. Insertion and deletion operation is fast. For example, if you had 20 members of a team and you wanted to store all the names for use in your VBA code. Each of the entries in the array can be accessed by an index number. In ArrayList we can store different datatype variables. Excel Visual Basic arrays are structures which are used to store a set of related variables of the same type. In Arrays, we can store only one datatype either int, string, char etc. My.Settings.MyButtonValues = New Specialized.StringCollection ArrayList belongs to System.Collection namespace. For example, change your ButtonValues type to in your properties and then add the following to your Form Load event: If My.Settings.MyButtonValues IsNot Nothing Thenīutton1.Text = My.Settings.MyButtonValues(0)īutton2.Text = My.Settings.MyButtonValues(1) An array is a dynamically-created object. An array is a basic functionality provided by Java, whereas ArrayList is a class of Java Collections framework. However, why use an ArrayList when you could use a StringCollection for this. In Java, array and ArrayList are the well-known data structures. You would probably need to use the AddRange method to add to the ArrayList.