Arrays

Array

A collection of similar types of data stored in a single, pre-allocated chunk of contiguous elements, fixed in size and location.

Declaration of Array in Java

dataType[] arrayName;

Types of Data that Java can hold

Primitive data types like int, char, double, byte, string, or Java objects.

Single-Dimensional Array.

The most common type of arrays in which elements are stored in a linear order.

Multi-Dimensional Array.

Arrays that contain more than one dimension.

Advantages of arrays in Java

Efficient access, straightforward memory management, and structured data organization.

Disadvantages of arrays in Java

Fixed size causing potential memory waste, type homogeneity, and costly insertion and deletion operations.

Why can insertion and deletion in arrays be costly?

Because it may require shifting elements to maintain the array's order.