Adding emoji reaction by unicode not working

Con Devan :

Currently, I am making a music discord bot and I want it to display the list of songs it is currently playing.

The user should be able to interact with the list by moving to each page with a left arrow and right arrow emoji.

The problem is that, when I try to react to the message via a unicode, it does not seems to work as follows:

message.addReaction("U+2B05").queue();
message.addReaction("U+2B07").queue();

it throws an error saying that the Emoji is not found during runtime, even though that is the respective unicode for the emoji I wanted to sent.
I have tried to use 2B05 or Left Arrow in the string and it does not work too.

Kaynn :

Encountered the same issue before, though one of the answers from this question helped me.
Specifically, one of the answer was:

I understood how to do it. Just need to add this line e.getChannel().sendMessage(embedBuilder.build()).complete().addReaction("✔").queue();

Apparently adding the emoji directly into the string works.

Do this instead:

message.addReaction("➡").queue();
message.addReaction("⬅").queue();