I have tried everything and can not figure out what is wrong!! The errors that I keep getting are listed below, please help!!

import java.util.Scanner;

abstract class OutputwithVars { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); } int userNum = 0; int userNum2 = 0; { userNum2 = 5; System.out.println("Enter integer:"); userNum = scnr.nextInt(); System.out.println(userNum); System.out.println("You entered: 4"); System.out.println(userNum + " squared is " + userNum * userNum); System.out.println("And " + userNum + " cubed is " + userNum * userNum * userNum + "!!"); System.out.println("Enter another integer: "); userNum2 = scnr.nextInt(); System.out.println(userNum2); System.out.println("5"); System.out.print(userNum + " + " + userNum2 + " is "); System.out.println(userNum + userNum2); System.out.print(userNum + " * " + userNum2 + " is "); System.out.println(userNum * userNum2); return; } }

2 errors found: [line: 10] Error: scnr cannot be resolved [line: 20] Error: scnr cannot be resolved