jagwire

public interface Obj {
 protected void doSomething(); 
}

public class ObjImpl implements Obj {
  
  protected void doSomething() {
    int x = 5*5;
  }
  

jagwire

public class Cell {
  //Do we need to contractually obligate developers to only use a single instance of a component based on class?
  //The difference is in using a List or a Map.
  Collection<State> states;
  
  //Given an enum of types: Text, 2D, JME3
  //We should keep track of the various views in a map. No two instances of a cell view should have the same type
  Map<EnumViewType, CellView> views;
  //The alternative here is to have a single view with view components
  

jagwire

public enum Singleton {
  INSTANCE;
  
  private Singleton() { }

 
}