How to improve the builder pattern?

by

The traditional builder pattern already handles this: simply take the mandatory parameters in the constructor. Of course, nothing prevents a caller from passing null, but neither does your method.

The big problem I see with your method is that you either have a combinatorical explosion of classes with the number of mandatory parameters, or force the user to set the parameters in one particular sqeuence, which is annoying.

Also, it is a lot of additional work.

More Related Contents:

  1. Builder Pattern in Effective Java
  2. Finding a good design pattern for Java
  3. What is an efficient way to implement a singleton pattern in Java? [closed]
  4. Design Patterns web based applications [closed]
  5. What components are MVC in JSF MVC framework?
  6. Implementing Singleton with an Enum (in Java)
  7. What is the “Execute Around” idiom?
  8. What is the solution for the N+1 issue in JPA and Hibernate?
  9. Abstract class vs Interface in Java
  10. Subclassing a Java Builder class
  11. What’s Alternative to Singleton
  12. Marker Interfaces in Java?
  13. Why do we need immutable class?
  14. why business logic should be moved out of JSP?
  15. Best way to build a Plugin system with Java
  16. How to avoid ‘instanceof’ when implementing factory design pattern?
  17. Replacing if else statement with pattern
  18. Java – Learning MVC [closed]
  19. Visitor pattern’s purpose with examples [duplicate]
  20. Using Command Design pattern
  21. How to get all classes names in a package? [duplicate]
  22. Benefits and drawbacks of method chaining and a possibility to replace all void return parameters by the object itself
  23. Parcelable and inheritance in Android
  24. should a db connection be a singleton?
  25. Advantages of Java’s enum over the old “Typesafe Enum” pattern?
  26. Java collections covariance problem
  27. Why use a singleton instead of static methods?
  28. The builder pattern and a large number of mandatory parameters
  29. Why Java allows increasing the visibility of protected methods in child class?
  30. Law of Demeter with data model objects

Leave a Comment