Classify a Token (instanceof Pattern)

/*
 * Problem : Classify a token.
 * Input   : One token.
 * Output  : A description.
 * Approach: Type test.
 * Time    : O(1)
 * Space   : O(1)
 * Java    : 8 or newer.
 */
import java.util.Scanner;

public class Main {
    // This method solves the task. It receives the input and returns the answer.
    static String solve(String s) {
        // Step 1: Make an Object that is an Integer if the text is a number, otherwise a String.
        Object token;
        try {
            token = Integer.valueOf(s.trim());
        } catch (NumberFormatException error) {
            token = s.trim();
        }

        // Step 2: Before Java 16 we test the type, then cast the object in a second step.
        if (token instanceof Integer) {
            Integer number = (Integer) token;
            return "integer " + (number * 2);
        }
        String word = (String) token;
        return "word " + word.toUpperCase();
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.hasNextLine() ? scanner.nextLine() : "";
        System.out.println(solve(s));
    }
}