public class Main {
  public static void main(String[] args) {
    boolean loggedIn = true;
    boolean isAdmin = false;

    if (loggedIn) {
      System.out.println("Welcome back!");

      if (isAdmin) {
        System.out.println("You have admin tools.");
      } else {
        System.out.println("You have standard access.");
      }
    } else {
      System.out.println("Please log in first.");
    }
  }
}
// Output:
// Welcome back!
// You have standard access.