What are Arrays in Java?

An array is a collection of elements of the same data type, stored in contiguous memory locations. It allows multiple values to be stored using a single variable name, making data management more efficient.

Arrays in Java are fixed in size, meaning the number of elements must be specified when the array is created.

Declare and initialize arrays

In Java, an array is a fixed-size data structure that holds multiple values of the same type. There are different ways to declare and initialize an array.

Type of Arrays in Java

The Java array is divided into two main types which then expands in different varieties of arrays. Here's a breakdown of the type of arrays:

2-Dimensional (2D) Array in Java

A 2D array is a table or matrix where data is stored in rows and columns. It is useful when dealing with structured data like student lists in multiple classes.

3-Dimensional (3D) Array in Java

A 3D array is an extension of a 2D array, adding another dimension. It can be used to represent students in different schools and classes.

Jagged Arrays in Java

A Jagged Array is an array of arrays where each row can have a different number of columns. Unlike regular 2D arrays, where all rows have the same number of columns, a jagged array allows for variable-sized rows.