Today i learned that in Java 11 there was a new String Method introduced that checks if a string is empty or just contains blanks and the same time.

So instead of this:

String toCheck = " ";
if(toCheck.trim().isEmpty()) {
...
}

You can do this:

String toCheck = " ";
if(toCheck.isBlank()) {
...
}

Makes the if statement a bit cleaner.