Can anyone explain this java statement and the value of x after evaluating::- where int x=4

Question

x+=(x++)+(++x)+x

Answer 1

To understand, let us rewrite the equation. So
x+=(x++)+(++x)+x actually means
x = x + (x++) + (++x) + x

At the start, x is 4. So
x = 4 + (x++) + (++x) + x

(x++) will use x (4) then increment x, making it 5. So
x = 4 + 4+ (++x) + x

(++x) will increment x (5) making it 6, then use x. So
x = 4 + 4 +6 + x

And x is now 6. So
x = 4 + 4 + 6 + 6

Which is 20.
Thus x = 20.

Answer 2

Thanks