A UML class diagram that includes all classes you wrote. Do not include

predefined classes on import java.util.Stack;

import java.util.Scanner;

public class DelimiterCheckerApp $\{$

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

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

DelimiterChecker checker $=$ null;

while $($checker $==$ null$)\{$

try $\{$

System.out.print$("$Enter the Java source file name: $")$;

String fileName $=$ scanner.nextLine$()$;

checker $=$ new DelimiterChecker$($fileName$)$;

$\}$ catch $($FileNotFoundException e$)\{$

System.out.println$("$File not found. Please try again."$)$;

$\}$

$\}$

Stack delimiterStack $=$ new Stack$<>()$;

char currentChar;

while $(($currentChar $=$ checker.getNextCharacter$())!=\text{'}\backslash 0\text{'})\{$

if $($currentChar $==\text{'}(\text{'}||$ currentChar $==\text{'}\{\text{'}||$ currentChar $==\text{'}[\text{'})\{$

delimiterStack.push$($currentChar$)$;

$\}$ else if $($currentChar $==\text{'})\text{'}||$ currentChar $==\text{'}\}\text{'}||$ currentChar $==\text{'}]\text{'})\{$

if $($delimiterStack$.$isEmpty$())\{$

System.out.println$("$Mismatched delimiter $"+$ currentChar $+"$ at $"+$ checker.getPosition$())$;

return;

$\}$

char lastDelimiter $=$ delimiterStack.pop$()$;

if $(!$isMatchingPair$($lastDelimiter$,$ currentChar$))\{$

System.out.println$("$Mismatched delimiter $"+$ currentChar $+"$ at $"+$ checker.getPosition$())$;

return;

$\}$

$\}$

$\}$

if $(!$delimiterStack.isEmpty$())\{$

System.out.println$("$Mismatched delimiter at end of file."$)$;

$\}$ else $\{$

System.out.println$("$All delimiters matched successfully."$)$;

$\}$

$\}$

private static boolean isMatchingPair$($char open, char close$)\{$

return $($open $==\text{'}(\text{'}$ && close $==\text{'})\text{'})||$

$($open $==\text{'}\{\text{'}$ && close $==\text{'}\}\text{'})||$

$($open $==\text{'}[\text{'}$ && close $==\text{'}]\text{'})$;

$\}$

$\}$