[Java] Add ByteStringOutputStream.isEmpty() and reduce ByteStringOutputStream.size() calls#37947

Open

scwhittle wants to merge 3 commits intoapache:masterfrom

scwhittle:size_opt

Commits on Mar 25, 2026

[Java] Add ByteStringOutputStream.isEmpty()
scwhittle
committed

Commits on Mar 26, 2026

fix bug
scwhittle
committed

Commits on Mar 27, 2026

revert DataStreams change as it may use other OutputStreams for which size() behaves differently
scwhittle
committed