Computer scienceFundamentalsEssentialsSoftware constructionDesign patternsCreational patterns

Factory method and prototype

Pattern in pseudocode

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This pseudocode depicts a design pattern. Is it the factory method or prototype?

global instance

class Object is
  constructor Object() is ...

  method getInstance() is
    if (instance == null) then
      instance = new Object()
    return instance

  method doThing() is
    print Object

class Application is
  method main() is
    Object foo = Object.getInstance()
    foo.doThing()
    //"foo" will be printed
    Object bar = Object.getInstance()
    bar.doThing()
    //"foo" will be printed again

Select one option from the list

Prototype

Factory method

Both of them

Neither of them

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