What is the difference between an array and an ArrayList?
An example of an AI chatbot conversation about the difference between arrays and ArrayLists in programming.
What is the difference between an array and an ArrayList?
An array is a fixed-size data structure that holds elements of the same type, while an ArrayList is a resizable array implementation in Java.
Can you explain why I would use an ArrayList instead of an array?
You would use an ArrayList when you need a dynamic size, as it can grow and shrink as needed, unlike arrays.
Are there any performance differences between the two?
Yes, arrays are generally faster for accessing elements due to their fixed size, while ArrayLists have overhead for resizing.
What about type safety? Are arrays safer than ArrayLists?
Arrays are type-safe as they can only hold a specific type, while ArrayLists can hold any object type, which may lead to runtime errors.
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