What is the difference between build().perform() and perform()

Question

Some articles suggest that now build() is included in perform() itself, while others suggest that build().perform() is used when multi

Answer 1

build() is included in perform(), you can see it in the source code

public void perform() {
    build().perform();
}

The perform() inside the methods calls the perform() method in the inner class BuiltAction.

Calling build().perform() in your code is actually calling build() twice, build().build().perform().

build

Generates a composite action containing all actions so far, ready to be performed (and resets the internal builder state, so subsequent calls to build() will contain fresh sequences).

performe

A convenience method for performing the actions without calling build() first.

This is little misleading (IMO), because build() is being called, even if implicitly.