public class Coercion {
  public static void f(double x) {
    System.out.println(x);
  }
  public static void main(String args[]) {
    f(3.1416);
    f((byte)1);
    f((short)2);
    f('a');
    f(3);
    f(4L);
    f(5.6F);
  }
}