Java - Tab space character ("\t") is not working!

Question

The "\t" doesn't indent four space as expected, in the Java editor of SoloLearn. I tried the same code in Netbeans, and it works fine!
I want to know how to indent four spaces!

Further, I want to know how to print a char n number of times?

[EDIT] In Java, C, C++, Python and JavaScript also, the tab character isn't working!!!

Here is my code
https://code.sololearn.com/cJ4b3UDvcthL/?ref=app

Answer 1

I tried with c and c++
Tab space not working..in playground

Answer 2

@Full Gamer, still no tab spacing in the output!