Ahmad Ghazi Altarabsheh Ahmad Ghazi Altarabsheh - 1 month ago 7
Java Question

check if arraylist is NOT empty java

I know the isEmpty() method used to check if an arraylist is empty, but I am trying to check if an arraylist is not empty. I tried to look online but I didn't find any useful information on how to do this. My code is like "while ArrayList is not empty then run code).

Answer

Invert the result of isEmpty().

public boolean notEmpty(ArrayList a) {
    return !a.isEmpty();
}

That will tell you when a list is not empty.