In this tutorial, we will learn about arrays in Java. We will cover the basics of declaring and using arrays, including accessing and modifying elements.
An array is a collection of elements of the same type stored in contiguous memory locations. It allows you to store multiple items under a single name and access them using an index.
The syntax to declare an array in Java is:
type[] arrayName = new type[arraySize];
We will learn how to declare, initialize, access, and modify arrays in Java.
arr
with 5 elements.public class Main {
public static void main(String[] args) {
int[] arr = {1, 2, 3, 4, 5};
for (int num : arr) {
System.out.print(num + " ");
}
}
}
1 2 3 4 5
arr
with 5 elements.public class Main {
public static void main(String[] args) {
int[] arr = {10, 20, 30, 40, 50};
System.out.println("The third element is: " + arr[2]);
}
}
The third element is: 30
arr
with 5 elements.public class Main {
public static void main(String[] args) {
int[] arr = {5, 10, 15, 20, 25};
arr[1] = 50;
for (int num : arr) {
System.out.print(num + " ");
}
}
}
5 50 15 20 25