What is wrong with my code

import java.util.Scanner;

import java.util.Random;

public class Project$2\{$

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

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

while $($true$)\{$

System.out.println$("1.$ Guess your number"$)$;

System.out.println$("2.$ Guess my number"$)$;

System.out.println$("3.$ Exit"$)$;

int choice $=$ scnr$.$nextInt$()$;

if $($choice $==1)\{$

guessYourNumber$()$;

continue;

$\}$

if $($choice $==2)\{$

guessMyNumber$()$;

continue;

$\}$

if $($choice $==3)\{$

System.out.println$("$Goodbye$")$;

break;

$\}$

System.out.println$("$Invalid input"$)$;

$\}$

$\}$

public static void guessYourNumber$()\{$

System.out.println$("$Think of a number from $0$ to $100.")$;

int low $=1,$ high $=100,$ tries $=0$;

int maxTries $=7$;

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

while $($tries $<$ maxTries$)\{$

int guess $=($low $+$ high$)/2$;

tries$++$;

System.out.println$("$CPU guesses $"+$ guess$)$;

System.out.println$("$Type $\text{'}$y$\text{'}$ if the number is correct, $\text{'}$h$\text{'}$ if the number is higher, and $\text{'}$l$\text{'}$ if the number is lower"$)$;

String cpuGuess $=$ scnr$.$nextLine$().$toLowerCase$()$;

if $($cpuGuess$.$equals$("$y$"))\{$

System.out.println$("$You lose. Game over. :$($

$")$;

return;

$\}$

if $($cpuGuess$.$equals$("$h$"))\{$

high $=$ guess $-1$;

continue;

$\}$

if $($cpuGuess$.$equals$("$l$"))\{$

low $=$ guess $+1$;

continue;

$\}$

System.out.println$("$Invalid input"$)$;

$\}$

System.out.println$("$You got me$.$ You win! :$)$

$")$;

$\}$

public static void guessMyNumber$()\{$

Random randGen $=$ new Random$()$;

int correctNum $=$ randGen.nextInt$(100)+1$;

int tries $=0$;

final int maxTries $=10$;

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

System.out.println$("$Try to guess the number I picked. From $1-100")$;

while $($tries $<$ maxTries$)\{$

System.out.print$("$Input your guess: $")$;

int userGuess $=$ scnr$.$nextInt$()$;

tries$++$;

if $($userGuess $<$ correctNum$)\{$

System.out.println$("$Lower$")$;

continue;

$\}$

if $($userGuess $>$ correctNum$)\{$

System.out.println$("$Higher$")$;

continue;

$\}$

System.out.println$("$Congratulations$.$ That was the number. You win! :$)")$;

return;

$\}$

System.out.println$("$All attempts used. The number was $"+$ correctNum $+".$ You lose. Game over. :$($

$")$;

$\}$

$\}$