Object Method-Call Conversion : Reference Type Casting « Type Casting « SCJP

1. SCJP
2. Type Casting
3. Reference Type Casting

public class MainClass {
  public static void main(String[] argv) {
    MySubclass sub = new MySubclass();

    myMethod(sub);
  }

  public static void myMethod(MyClass myClass) {
  }

}

class MyClass {
}

class MySubclass extends MyClass {
}