I got error ! How to solved?

Question

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner User = new Scanner(System.in);
System.out.println("Welcome to the Theater!");
System.out.println("_______________________");
System.out.println("Please type in your age");
int age=User.nextLine();
if (age<20){
System.out.println ("Congratulation, you got discount 20%");

}else{
System.out.println("Oooop! You are not

Answer 1

need
int age = User.nextInt();

Answer 2

thank you for your help