Comments in any programming language are ignored by the compiler or the interpreter. A comment is a part of the coding file that the programmer does not want to execute; rather, the programmer uses it to either explain a block of code or to avoid the execution of a specific part of code while testing.

There are two types of comments:

• Single-line comment
• Multi-line comment

A. Single Line Comments:

To write a single-line comment, just add a // at the start of the line.

Example:

package syntax1;
public class Details {
    public static void main(String[] args) {
        // This is a single line comment
        System.out.println("Hello World!!!");
    }
}

Output:

Hello World!!!

B. Multi Line Comments:

To write a multi-line comment, just add a /*...*/ at the start and end of the comment block.

Example:

package syntax1;
 
public class Details {
    public static void main(String[] args) {
        /* This
         * is 
         * a
         * Multiline 
         * Comment
         */
        System.out.println("Hello World!!!");
    }
}

Output:

Hello World!!!