Editing Comparison of C Sharp and Java (section)

=== Tuples ===
C# provides two different methods for creating [[tuple]] types (also known as [[product type]]s). The first is via the {{code|System.Tuple}} classes, which are immutable reference types provided by the framework API (starting with .NET Framework 4.0) for creating generic tuple types.<ref name="C# Tuple class"/> This first method has since been effectively superseded by the second, the {{code|System.ValueTuple}} structs, which are mutable value types provided by the framework API (starting with .NET Framework 4.7).<ref name="C# value tuples"/>

While the two methods seem superficially similar, they have multiple notable differences. The {{mono|ValueTuple}} types are value types, so they have a more compact memory footprint; also, the {{mono|ValueTuple}} types expose their contents as mutable fields, compared to the immutable properties of the {{mono|Tuple}} classes. Finally, since C# version 7.0, the language has native syntactical support for the construction, deconstruction, and manipulation of tuples as {{mono|ValueTuple}} instances; this also provides for the arbitrary renaming of the tuples' constituent fields (as opposed to {{mono|Tuple}}, where the fields are always named {{mono|Item1}}, {{mono|Item2}}, etc.).

Java does not provide tuple types as part of its language or standard API; numerous third-party libraries exist which can provide tuple types,<ref>{{Cite web |url=https://www.javatuples.org/ |title=javatuples |access-date=20 April 2023}}</ref> but they all are necessarily similar to the C# {{code|System.Tuple}} classes. In comparison to C# {{mono|ValueTuple}} types and their associated syntax, they are more unwieldy to use (requiring the explicit use of constructors or static factory methods for creating them, requiring individual member access to deconstruct them, and having fixed names for their elements).