Implementation of array in Java

Declares an integer array arr and initializes it with values using the array initializer syntax.
Accesses the element at index 4 using arr[4] and prints its value.
Modifies the element at index 4 by assigning a new value (20) to arr[4] and prints the modified value.

Java

public class Main {
    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5};  // Initializing an array with values
 
        // Accessing elements
        System.out.println("Element at index 4: " + arr[4]);
 
        // Modifying elements
        arr[4] = 20;
        System.out.println("Modified element at index 4: " + arr[4]);
    }
}

Javascript

class Main {
    static main() {
        const arr = [1, 2, 3, 4, 5];  // Initializing an array with values
 
        // Accessing elements
        console.log("Element at index 4: " + arr[4]);
 
        // Modifying elements
        arr[4] = 20;
        console.log("Modified element at index 4: " + arr[4]);
    }
}
 
// Call the main method
Main.main();

Output

Element at index 4: 5
Modified element at index 4: 20

Implement Arrays in different Programming Languages

Arrays are one of the basic data structures that should be learnt by every programmer. Arrays stores a collection of elements, each identified by an index or a key. They provide a way to organize and access a fixed-size sequential collection of elements of the same type. In this article, we will learn about the basic use of array in most common languages like C, C++, Java, Python, etc.

Table of Content

What is an Array?
Implementation of array in C++:
Implementation of array in C:
Implementation of array in Java:
Implementation of array in Python:
Implementation of array in C#:
Implementation of array in JavaScript:
Pros and Cons of array:

Implementation of array in Java

Java

Javascript

Implement Arrays in different Programming Languages

Similar Reads