I keep getting this error when running my code. Can someone please help me fix this?

public class Finder $\{$

public static int findAndAdd$($String s$)\{$

int sum $=0$;

StringBuild number $=$ new StringBuild$()$;

for $($int i $=0$; i $<$ s$.$length$()$; i$++)\{$

char currentChar $=$ s$.$charAt$($i$)$;

if $($Character$.$isDigit$($currentChar$))\{$

number.append$($currentChar$)$;

$\}$ else $\{$

if $($number$.$length$()>0)\{$

sum $+=$ Integer.parseInt$($number$.$toString$())$;

number.setLength$(0)$;

$\}$

$\}$

$\}$

if $($number$.$length$()>0)\{$

sum $+=$ Integer.parseInt$($number$.$toString$())$;

$\}$

return sum;

$\}$

$\}$

FinderTest.java:$20$: error: $\text{'}$;$\text{'}$ expected

String s $="$xyz$432$abc"