[SOLVED] Instantiating a particular class constructor using reflection

Processing Coding Questions
19

Just for the sake of completion, this is the final bit of code I’ll add to my original Wallpaper class:

  Contents c = null;
  
  final Class<?> appCls = getClass(), innerCls;
  try {
    innerCls = Class.forName(appCls.getName() + '$' + "AbstractExp"); // or whatever child class it is
    c = (Contents) innerCls.getDeclaredConstructor(appCls, String.class).newInstance(this, "Booyah");
  }
  catch (final ClassNotFoundException ex) {
    throw new RuntimeException(ex);
  }
  catch (final ReflectiveOperationException ex) {
    System.err.println(ex);
  } 
  c.printPattern();