SEI CERT Oracle Coding Standard for Java

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changes.mady.by.user Shannon Haas

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changes.mady.by.user David Svoboda

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Note that making deep copies of the keys of a hash table is unncessary; shallow copying of the references suffices because a hash table's contract dictates that its keys must produce consistent results to the equals() and hashCode() methods. Mutable objects whose equals() or hashCode() method results may be modified are not suitable keys.

Exceptions

OBJ05-EX0: When callers expose only unmodifiable views a method is called with only an unmodifiable view of an object to a method, the that method may freely use the unmodifiable view without defensive copying. This decision should be made early in the design of the API. Note that new callers of such methods must also expose only unmodifiable views.

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[[API 2006

AA. Bibliography#API 06]]

[Method clone()

http://java.sun.com/javase/6/docs/api/java/lang/Object.html#clone()]

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[[Bloch 2008

AA. Bibliography#Bloch 08]]

Item 39. Make defensive copies when needed

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[[Goetz 2006

AA. Bibliography#Goetz 06]]

3.2, Publication and Escape: Allowing Internal Mutable State to Escape

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[[Gong 2003

AA. Bibliography#Gong 03]]

9.4, Private Object State and Object Immutability

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[[Haggar 2000

AA. Bibliography#Haggar 00]]

[Practical Java Praxis 64. Use clone for immutable objects when passing or receiving object references to mutable objects

http://www.informit.com/articles/article.aspx?p=20530]

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[[Security 2006

AA. Bibliography#Security 06]]

 

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