How do i use chegg ai$?$How many unique method$-$names $($including constructor names$)$ do you see in the following class $($Do not count the repeated ones$)?$

$//$The DemoStaticModifier Class

public class DemoStaticModifier $\{$

private static int$[]$ number;

private static Scanner input $=$ new Scanner$($System$.$in$)$;

public static void main$($String$[]$ args$)\{$

System.out.print$("$What is the size of the array: $")$;

int sz $=$ input.nextInt$()$;

number $=$ new int$[$sz$]$;

populateArray$()$;

printArray$()$;

$\}$

public static void populateArray$()\{$

for$($int i $=0$; i