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java-design-patterns/memento/index.md
Markus 5ce932ceb7 Work on #213 
- properly categorize all patterns
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- removed "introduction" because its not a pattern and an error i
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pattern Memento memento /patterns/memento/ Behavioral Java

Intent: Without violating encapsulation, capture and externalize an object's internal state so that the object can be restored to this state later.

alt text

Applicability: Use the Memento pattern when

  • a snapshot of an object's state must be saved so that it can be restored to that state later, and
  • a direct interface to obtaining the state would expose implementation details and break the object's encapsulation

Real world examples: