Je Suis DIFFÉRENT

Find $J''(0)$ if $xJ''(x)+J'(x)+xJ(x)=0$ for all x $J(0)=1$ and $J\prime \prime \prime (0)$ exists

$J'''(x)$ , $J''(x)$ , $J'(x)$ are the third, second and first derivative of the function $J(x)$

(Bilkent University, 1st Midterm Question)