What is x after “x = x++”?

Question

What happens (behind the curtains) when this is executed?

int x = 7;
x = x++;

That is, when a variable is post incremented and assigned to

Answer 1

because x++ increments the value AFTER assigning it to the variable. so on and during the execution of this line:

x++;

the varialbe x will still have the original value (7), but using x again on another line, such as

System.out.println(x + "");

will give you 8.

if you want to use an incremented value of x on your assignment statement, use

++x;

This will increment x by 1, THEN assign that value to the variable x.

[Edit] instead of x = x++, it's just x++; the former assigns the original value of x to itself, so it actually does nothing on that line.