@box/box-java-sdk v5.9.0 release note (#680)

Author: box-devrel

content/2026/04-30-box-java-sdk-v590-released.md

@@ -0,0 +1,32 @@
+---
+applied_at: '2026-04-30'
+applies_to:
+  - sdks
+  - java
+is_impactful: true
+is_new_feature: true
+release_source_url: 'https://github.com/box/box-java-sdk/releases/tag/v5.9.0'
+collapse: true
+---
+
+# Box Java SDK `v5.9.0` released
+
+### Bug Fixes
+
+* **boxsdkgen:** Fix java `oneOf` serialization (box/box-codegen[#942][1]) ([#1805][2]) ([`cf0d67f`][3])
+
+### New Features and Enhancements
+
+* **boxsdkgen:** Automate Public API (box/box-openapi[#594][4]) ([#1816][5]) ([`4369d9c`][6])
+
+[1]: https://github.com/box/box-java-sdk/issues/942
+
+[2]: https://github.com/box/box-java-sdk/issues/1805
+
+[3]: https://github.com/box/box-java-sdk/commit/cf0d67fa25af2ef4b9458362e9e896ce50674e62
+
+[4]: https://github.com/box/box-java-sdk/issues/594
+
+[5]: https://github.com/box/box-java-sdk/issues/1816
+
+[6]: https://github.com/box/box-java-sdk/commit/4369d9c45ca6ff5d3045e7e193335560eb886b6f