Timeline for Object oriented immutability: final classes or final methods
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Oct 15, 2013 at 15:16 | comment | added | ftr | let us continue this discussion in chat | |
| Oct 15, 2013 at 13:38 | comment | added | nablex | This is rather pointless. You know very well that any external call to a private class variable is going to go through the getter hence the finality is wasted if you don't secure the getter, especially considering that the topic at hand is immutability. | |
| Oct 15, 2013 at 12:33 | comment | added | ftr |
I disagree. The private variable value is guaranteed to be immutable if it is final. If you override the getter in a subclass with some other value, that may be a problem, but does have no bearing on the state of the field itself.
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| Oct 15, 2013 at 12:17 | comment | added | nablex | The immutability of the private variable "value" is wasted without protecting the getter. | |
| Oct 15, 2013 at 12:07 | comment | added | ftr |
The getter has nothing to do with the immutability of value, though. But if you want to make value immutable and prohibit overriding of the getter, you can just make both the field and the getter final. Overriding a getter of an immutable field has a smelly feeling to it anyway.
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| Oct 15, 2013 at 12:00 | comment | added | nablex | Making a field final is not good enough if the getter isn't final. A child class can simply override the getter and use some other mutable value | |
| Oct 15, 2013 at 11:53 | comment | added | ftr |
Well, if field immutability is the goal, making the fields final is the way to go.
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| Oct 15, 2013 at 11:52 | history | edited | ftr | CC BY-SA 3.0 |
added 91 characters in body
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| Oct 15, 2013 at 11:47 | comment | added | nablex | I meant to say that the argument is used that the entire class is final because its fields have to be immutable, not that the class itself is "immutable" as it of course refers to its fields. | |
| Oct 15, 2013 at 11:44 | history | answered | ftr | CC BY-SA 3.0 |