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C# allows it but but Java doesn't have this. Hence why it's standard operating procedure to just use setters from the beginning, because it might be nontrivial to update all references.

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Play! framework allows you to use getters and setters with public members as you would in C#.

Not sure how this is implemented.

Spring Roo does the same through the use of aspect programming (code generation, essentially - it generates the boilerplate behind the scenes).

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