I found some error in this but I can't understand what?

Question

https://code.sololearn.com/clpJ6psvK4t5/?ref=app

Answer 1

Avinash Dhaka

I have not seen this syntax with method in Java.

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Where did you get this?

Answer 2

It's a trivial typo error; just replace square braces with curly braces in lines 6 and 12 and the code will work fine.