What is the Big O complexity of the Java method below? Explain

your reasoning.

public void complexity$($int n$)\{$

int counter$=0$;

for$($int i $=$ n; i$>500$; i$--)\{$

for$($int j$=6$; j$<6*$n; j$=$j$+$n$)\{$

counter$++$;

$\}$

$\}$

$\}$