How to do addition in java?

I imported a class with the import java.util.Scanner; it seemed a little awkward to do in java, so used to C.

import java.util.Scanner; // class scanner gets imported

public class addition
{
  public static void main(String [] args )
  {
    Scanner input = new Scanner(System.in);
    
    int number1; //first number to add
    int number2; //second number to add
    int sum; // sum of number1 and number2
    
    
    System.out.print("Please enter first interger: "); // prompt
    number1 = input.nextInt(); //read first number from user
    
    System.out.print("Please enter second interger: "); // prompt
    number2 = input.nextInt(); // read second number from user 
    
    sum = number1 + number2; // add numbers, store total in sum
    
    System.out.printf("Sum is %d\n", sum ); // display sum 
    
  } // end of main string
}// end of class addition