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Make Safe Copies to Protect Objects

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This presentation explains why and how we should make defensive copies of method parameters in Java.

TechnologyNews & Politics
1 of 8
Make Defensive Copies Parag Shah http://www.diycomputerscience.com
Even though Java is a safe language, it is still possible for programmers to make safe mistakes and destroy the invariants of an object
When to not make defensive When a collaborator is doing an explicit hand-off of the object in the constructor When it is very expensive to make copies Model objects... eg: Hibernate pojo's

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Make Safe Copies to Protect Objects

  • 1. Make Defensive Copies Parag Shah http://www.diycomputerscience.com
  • 2. Even though Java is a safe language, it is still possible for programmers to make safe mistakes and destroy the invariants of an object
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. When to not make defensive When a collaborator is doing an explicit hand-off of the object in the constructor When it is very expensive to make copies Model objects... eg: Hibernate pojo's