Thread: Solve InputMismatchException

I'm making a numbrosia puzzle for one of my classes. The problem that I'm having is trying to find some way to tell the user to follow instructions if an integer isn't entered. I can do it if the number is bigger than expected but not if its a letter or anything else. My guess is that it starts around where it says "int i = scan.nextInt();". I can also catch if the user doesn't input a correct move command. input.txt is just where I have the numbers for the puzzle. Also I didn't want to type all my methods like RU, RD, plusRow, etc. because I already wrote too much in my opinion ha Any help is appreciated. Thanks in advance.

import java.io.*;
import java.util.Scanner;
public class Numbrosia {
	static int [][] gameBoard = new int[5][5];
	public static void main(String[] arg){
		Scanner fileReader = null, scan = null;
		//Scanner scan = new Scanner(System.in);
 
		try{
			fileReader = new Scanner(new File("input.txt"));
			scan = new Scanner(System.in);
		}
		catch (Exception e){
			System.out.println(e);
 
		}
		for(int i = 0; i < 5; i++) //reading game board
			for(int j = 0; j < 5; j++)
				gameBoard[i][j] = fileReader.nextInt();
 
		while(true){
			showBoard();
			System.out.println("");
			System.out.println("Input number from 1 to 5: ");
			int i = scan.nextInt();
			System.out.println("Input move command: ");
			String moveName = scan.next();
			try{
				if(moveName.equals("rl")){
 
					RL(i-1);
				}
				else if(moveName.equals("rr")){
 
					RR(i-1);
				}
				else if(moveName.equals("ru")){
 
					RU(i-1);
				}
				else if(moveName.equals("rd")){
 
					RD(i-1);
				}
				else if(moveName.equals("+r")){
 
					plusRow(i-1);
				}
				else if(moveName.equals("-r")){
 
					minusRow(i-1);
				}
				else if(moveName.equals("+c")){
 
					plusColumn(i-1);
				}
				else if(moveName.equals("-c")){
 
					minusColumn(i-1);
				}
				else{
					System.out.println("");
					System.out.println("Please follow instructions");
					System.out.println("");
				}
			}
			// In case user inputs # greater than 5
			catch(Exception x){
				System.out.println("");
				System.out.println("Please follow instructions");
				System.out.println("");
			}
		}
	}
}