Please answer with atleast 2 paragraphs. Thanks!

This week we will further understand how to use arrays to implement an ADT bag in Java. Define array and give a simple code example demonstrating your understanding. How can you determine if you would need to utilize a fixed-size array or a dynamically-resizable array? In your answer, specifically think of and give a real-life scenario where: The array data structure can be used The array data structure is used