What is wrong with this program? Explain and modify please$($JAVA$,$ convert to if statement. USE TRY & CATCH expresson$)$

import java.util.InputMismatchException;

import java.util.Scanner;

public class FindSum $\{$

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

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

System.out.println$("$Enter two integers to find their sum."$)$;

$//$ Get the first integer

int num$1=$ getIntegerInput$($scanner$,$ "Enter the first integer: $")$;

$//$ Get the second integer

int num$2=$ getIntegerInput$($scanner$,$ "Enter the second integer: $")$;

$//$ Calculate and display the sum

int totalSum $=$ num$1+$ num$2$;

System.out.println$("$The sum of $"+$ num$1+"$ and $"+$ num$2+"$ is: $"+$ totalSum$)$;

$\}$

private static int getIntegerInput$($Scanner scanner, String prompt$)\{$

if$($scanner$.$hasNextInt$())\{$

num$1=$ scanner.nextInt$()$;

$\}$ else $\{$

System.out.println$("$Invalid input. Please enter a valid integer."$)$;

scanner.nextLine$()$;

$\}$

$\}$

$\}$