https://bz.apache.org/bugzilla/show_bug.cgi?id=63805
Bug ID: 63805
Summary: RFE: Leverage language features introduced in Java 8,
remove use of deprecated methods
Product: POI
Version: 4.0.x-dev
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: POI Overall
Assignee: dev@poi.apache.org
Reporter: a...@dua3.com
Target Milestone: ---
While I still have time working on POI, I'd like to contribute patches to
update the codebase to take advantage of features introduced in Java 8 and
replace parts of the code that use deprecated methods.
I would do so in a way that does not change semantics or behaviour (other than
hopefully positive impact on performance). Examples I have seen in the code
are:
- use of StringBuffer instead of StringBuilder
- Map lookup and get/put in two steps which can be done in a single operation
since in the meantime computeIfAbsent() and other methods were introduced
- toArray() with an argument of T[0] (I know it's faster than pre-allocating an
array with the correct size, but now we can pass a method reference to the
array constructor instead which is even faster and puts less stress on the GC)
- places where single operation collection creation could be used, i.e.
List.of() for creating an immutable list
and many more.
If I get a positive feedback, I'll create patches and collect them here (or
pull requests if github mirroring works again soon).
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