I have not understand the single line and multi line work in java

Answer 1

In Java :

"//" is used for single line comments.

Ex- // hello my self kajal.

Multi line comments in Java start with /* and end with */. You can comment multiple lines just by placing them between .

Ex- /* hello, this is the way to write multi line comments in java */

Ex for both:

public class program{

public start void main(String[] args){

System.out.println("hello Omi") ; // write your single line comment.

System.out.print("how are you") ;
/* I hope you understand that.
https://www.sololearn.com/learn/Java/2138/?ref=app */

Answer 2

Comment to each quiz is at lower left, not upper right.
https://www.sololearn.com/post/131750/?ref=app

There are plenty of explanations in comment of these lessons:

https://www.sololearn.com/learn/Java/2138/

Answer 3

//Single line comment is just 1 line..

/*
Multiline
Comment
Spans across
Multiple
Lines
*/

It's there so you can make notes what your code is doing incase you forget.