void main() {
    String answer = " Yes ";

    IO.println(answer.equals("yes"));
    IO.println(answer.strip().toLowerCase().equals("yes"));
}

// From Groundwork, chapter 8 (ch08-strings-as-data), box 6.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch08_06.java