[MATH-188] Make Complex and Fraction classes immutable and thus thread-safe

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2
• Assignee: Unassigned
• Reporter: Sebb
• Created: 04/Feb/08 02:39
• Updated: 23/Apr/09 02:26
• Resolved: 11/Feb/08 01:19

Description

There are many classes with instance fields that could be made final.

Two in particular seem like ideal candidates:

Complex - fields: real, imaginary
Fraction - fields: numerator, denominator (the private reduce() method also needs to be inlined)

As far as I can tell, making the above changes makes the classes immutable and therefore threadsafe.