Call a block of a method only for the first call of the method

Question

I have a method and inside this method I have a block:

public void method()
{
   [block instructions]
}

But this method is called twice in

Answer 1

You should probably redesign your method. It's confusing for someone trying to understand your program if a method does something different the second time it's run.

Is it called from a different place in your program, the second time? If that's the case, the easiest thing to do is to extract the bit that's duplicated into another method.

method() {
    // Do stuff that's run only the first time
    method2()
}

method2() {
    // Do stuff that's run both times
}

If it's called from the SAME place, you should ask yourself why your code is expecting something different to happen the second time.