Problem with catching error with try and catch

my problem is the once i input any character into the program it goes into a infinite loop, i can only guess its something to do with the scanner method i am using but i dont know.

here the code.

public static int mainMenu()
  	{
  		Scanner in = new Scanner(System.in);
  		int input;
  		boolean inputMisMatch;
  		do
  		{
  			// set input mismatch to jump out of the loop
  			inputMisMatch = false;
  			input = 0;
  			
  			System.out.println();
  			System.out.println("*************************************************");
  			System.out.println("*** Main menu");
  			System.out.println("*** ");
  			System.out.println("*** 1. Proccess New Job (using decimal values)");
  			System.out.println("*** 2. Proccess new job (using RGB hexadecimal values)");
  			System.out.println("*** 3. Calibrate Dispenser");
  			System.out.println("*** 4. Dipsplay Summary of Jobs");
  			System.out.println("*** 0. Exit");
  			
  			try
  			{
  				System.out.print("***\n*** Please choose a option: ");
  				input = in.nextInt();
  			}
  			catch (Exception e)
  			{
  				System.out.println("\nPlease only type in intergers to provent form crashing");
  				
  				// set inputMisMatch to itirate though the loop again.
  				inputMisMatch = true;
  			}
  			System.out.println();
  		
  		} while (inputMisMatch );
  		//(input > 4)
  		
  		return input;
  	}

any help is appreciated
Thanks Dale