View Compilation Error

0_0_13162156_14697.cpp:1:1: error: expected unqualified-id before 'public'
 public class Main{  public static void main(String[] args) {    Scanner scanner = new Scanner(System.in);  int num1 = scanner.nextInt();  int num2 = scanner.nextInt();  int sum = num1 + num2;  System.out.println(sum); }}
 ^