How do you make a comment

Answer 1

In which language (in all of Sololearn's tutorials it is said...)? Unless you talk about in-app comments, in which case, you should try to use the search bar.
Besides, here are some threads that might help you:
https://www.sololearn.com/discuss/1220537/?ref=app
https://www.sololearn.com/discuss/357689/?ref=app

Answer 2

//Single-line comment in java

/*
Multi-
line
comment in java
*/

Check this lesson :
https://www.sololearn.com/learn/Java/2138/

Answer 3

English

Answer 4

Java

Answer 5

Thanks a lot