import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;

public class ThrowsRantai {
    static String bacaNama() throws IOException {
        try (BufferedReader pembaca = new BufferedReader(new StringReader("Budi"))) {
            return pembaca.readLine();
        }
    }

    static String sapaPengguna() throws IOException {
        String nama = bacaNama();
        return "Halo, " + nama + "!";
    }

    public static void main(String[] args) {
        try {
            System.out.println(sapaPengguna());
        } catch (IOException e) {
            System.out.println("gagal: " + e.getClass().getSimpleName());
        }
    }
}