ArrayList

An ArrayList is a flexible, dynamic container used in programming to store a collection of items, such as numbers or words. Unlike fixed-size arrays, ArrayLists can grow or shrink as needed, automatically adjusting their capacity. They allow for easy addition, removal, and access to elements using indexes, similar to a list or array in everyday life. This makes managing collections of data more convenient and efficient, especially when the number of items varies or isn't known in advance. Overall, an ArrayList simplifies handling groups of data without requiring manual resizing or complex management.