21 lines
835 B
Markdown
21 lines
835 B
Markdown
# About this kata
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This kata refers to the book Effective Java by Joshua Bloch.
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It addresses
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Item 1: Consider static factory methods instead of constructors.
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# Problem description
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Provid a class that
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Use factory method to construct an instance by a good understandable name.
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The instance shall be only created when there is no existing one.
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advantages of factory method usage instead of constructors:
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* Unlike constructors the method has a meaningful name.
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* Unlike constructors it is not required to create a new object each time they are invoked.
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* Unlike constructors it can return an object of any subtype of their return type.
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* The returned object can vary from call to call as function of the input parameters.
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* The class of the returned object need not exist when the class containing the method is written. ????
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# Clues
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