Java Puzzle

JavaPuzzle.java

class A {
  public void x(byte b) { System.out.println("byte"); }
  public void x(long l) { System.out.println("long"); }
}

class B extends A {
  public void x(short s) { System.out.println("short"); }
  public void x(int i) { System.out.println("int"); }
}

class Main {
  public static void main(String[] args) {
    A a = new B();
    a.x((short)5);
  }
}