Removing Spaces in Strings

Question

I am trying to get "HelloWorld!" when I first type "Hello World!", but running this program simply returns the same "Hello World!" for me.

I know using replace(" ", "") works. But why doesn't string.trim() work? It used to (on pc).
https://code.sololearn.com/cAzk2rqIytP2/?ref=app

Answer 1

Andre Daniel Ah, that's because trim is not supposed to remove spaces in the middle, only start and end.

Google java+trim+whitespace

Answer 2

It works for me (as, your code gives the result I expect)
what makes you think it is wrong?

Answer 3

ifl unfortunately, when I enter "Hello World", I get back "Hello World" instead of the intended "HelloWorld". How does it work for you and not me?