class Prompt {
    // native method that prints a prompt and reads a line
  private native String getLine(String prompt, int i);
 
  public static void main(String args[]) {
    int i = 20;
    
    Prompt p = new Prompt();
    String input = p.getLine("Type a line: ", i);
    System.out.println("User typed: " + input);
  }
  static {
    System.loadLibrary("Prompt");
  }
}