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Make ImmutableEntry a public type

See original GitHub issue

Because ImmutableEntry is a package-private type Maps.immutableEntry() has to declare its return type as Map.Entry, which (because it’s an interface) can’t be guaranteed to be immutable. This means that users of Maps.immutableEntry() can’t express the immutability of the entry objects they’re constructing to anyone they pass them off to. Since the immutable types are intended to be “‘Interfaces’, not implementations”, I think it would make sense to expose this type publicly.

Issue Analytics

State:
Created 6 years ago
Comments:8 (4 by maintainers)

Top GitHub Comments

2reactions

ben-manescommented, Jun 29, 2017

AbstractMap.SimpleImmutableEntry is built in, so I don’t think this is necessary.

1reaction

cowwoccommented, Mar 6, 2018

@Maaartinus true. I filed a bug report against the JDK. I’ll post the link here once it becomes public.

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