What are Comments in Java– Know its Types

Related Courses

Next Batch : Invalid Date

Python Programming

4.3

ENROLL SHARE

Next Batch : Invalid Date

Data Structures & Algorithms using Java

ENROLL SHARE

Next Batch : Invalid Date

Data Structures & Algorithms using C

ENROLL SHARE

Next Batch : Invalid Date

ASP.NET MVC 8 + MVC Core

4.5

ENROLL SHARE

Next Batch : Invalid Date

Advanced Java

4.8

ENROLL SHARE

Next Batch : Invalid Date

Core Java

4.5

ENROLL SHARE

Next Batch : Invalid Date

Introduction

Comments in Java are statements used to explain a piece of code and are non-executable. They help improve the readability of the code and assist developers in understanding its functionality. Properly commented code enhances maintainability and makes collaboration easier. Java supports three types of comments: Single-line comments, Multi-line comments, and Documentation comments.

Types of Comments in Java

1. Single-Line Comments

Single-line comments begin with // and are used to describe a specific line of code. The text following // until the end of the line is ignored by the compiler.

Example:

import java.util.*; // Importing Scanner class

public class Main {
    public static void main(String[] args) {
        System.out.println("Welcome to Java Programming");
        Scanner s = new Scanner(System.in); // Creating Scanner object for input
        int a = s.nextInt(); // Accepting integer input from user
        s.close(); // Closing Scanner object
    }
}

2. Multi-Line Comments

Multi-line comments start with /* and end with */. They are used to explain a section of code or a complex snippet that requires detailed explanations.

Example:

import java.util.*; // Importing Scanner class

public class Main {
    public static void main(String[] args) {
        System.out.println("Welcome to Java Programming");
        Scanner s = new Scanner(System.in);
        /*
         * Accepting an integer input from the user
         * and storing it in variable 'a'.
         */
        int a = s.nextInt();
        s.close(); // Closing Scanner object
    }
}

3. Documentation Comments

Documentation comments start with /** and end with */. They are used to generate API documentation using the javadoc tool. These comments describe methods, classes, and variables in detail, making them useful for large-scale applications.

Example:

/**
 * This program demonstrates the Hello World output.
 * @author  Java Developer
 * @version 1.0
 * @since   2024-02-28
 */
public class Main {
    
    /**
     * Main method to print "Hello World".
     * @param args Command-line arguments
     */
    public static void main(String[] args) {
        System.out.println("Hello World!"); // Printing Hello World message
    }
}

Conclusion

Comments are essential in Java programming as they enhance code readability, provide explanations, and help in debugging. Using single-line, multi-line, and documentation comments effectively ensures that the code is understandable and maintainable over time.

Naresh I Technologies is the number one computer training institute in Hyderabad and among the top five computer training institutes in India. Contact us anytime for your Java training. You can also opt for Java online training, and from any part of the world. And a big package is waiting for you. And all is yours for a nominal fee affordable for all with any range of budget. Let us have a look at what you will get with this Java training package:

You need to pay a nominal fee.
You can choose any Java certification, as per your skills and interest.
You have the option to select from online and classroom training.
A chance to study at one of the best Java training institutes in India
We provide Java training in Hyderabad and USA, and no matter in which part of the world you are, you can contact us.
Naresh I technologies cater to one of the best Java training in India.
And a lot more is waiting for you.

Contact us anytime for your complete Java online training.

Introduction

Types of Comments in Java

1. Single-Line Comments

2. Multi-Line Comments

3. Documentation Comments

Conclusion

Recently Added Blogs