public static int varmista(String varmistus) {
		/**
		 * As a default, set confirmation to 'no'.
		 */
		int varmista = 2;
		boolean onValidi;
		/**
		 * Print the confirmation message.
		 */
		do {
			onValidi = true;
			System.out.println("\n" + varmistus);
			/**
			 * This will check that the users answer is integer.
			 */
			try {
				varmista = lue.nextInt();
			} 
			/**
			 * This will catch the exception: if user inputs something that is not integer while 
			 * integer is being expected, InputMismatchException occurs.
			 */
			catch(InputMismatchException IME) {
				System.out.println("Vastaa kokonaisluvulla 1 tai 2");
				onValidi = false;
			};
			/**
			 * If user answered yes, then value of varmista will be changed to 1
			 */
		}
		while(onValidi == false);
		if(varmista == 1) {
			varmista = 1;
		}
		/**
		 * Return the answer.
		 */
		return varmista;
	}