import java.util.Scanner;

import java.util.ArrayList;

public class Certificates $\{$

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

Scanner scnr $=$ new Scanner$($System$.$in$)$;

ArrayList certificateList $=$ new ArrayList$()$;

Certificate currCertificate;

int rowNumber;

int i;

$/*$ Your code goes here $*/$

for $($i $=0$; i $<$ certificateList.size$()$; $++$i$)\{$

currCertificate $=$ certificateList.get$($i$)$;

currCertificate.print$()$;

$\}$

$\}$

$\}$Use scnr to read integer rowNumber from input until the next rowNumber read is equal to $-999.$ If rowNumber is not equal to $-999$:

Assign currCertificate with a new Certificate object.

Use currCertificate's readHolderAndLevel$()$ method to read the certificate's holder and level from input.

Append currCertificate to ArrayList certificateList.

Ex: If the input is:

$1$ Ava $9$

$2$ Fay $1$

$3$ Ada $5$

$4$ Abe $14$

$-999$

then the output is:

Certificate: Ava, Level: $9$

Certificate: Fay, Level: $1$

Certificate: Ada, Level: $5$

Certificate: Abe, Level: $14$