how to check for an empty array java [duplicate]

Answer 1

I would consider using ArrayUtils.is empty by adding Apache Commons Lang from here http://commons.apache.org/proper/commons-lang/download_lang.cgi

The big advantage is this will null check the array for you in a clean and easily readible way.

You can then do:

if (ArrayUtils.isEmpty(arrayName) {
    System.out.printLn("Array empty");
} else {
    System.out.printLn("Array not empty");
}