From 9bd3be215846b26ee4c14a706e1ea7b35f8a05c9 Mon Sep 17 00:00:00 2001
From: tstanmay13 <29681256+tstanmay13@users.noreply.github.com>
Date: Wed, 13 Aug 2025 18:21:06 +0000
Subject: [PATCH] update changelogs

---
 .../overview/java/changelog/2025-08-13.mdx    | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 fern/products/sdks/overview/java/changelog/2025-08-13.mdx

diff --git a/fern/products/sdks/overview/java/changelog/2025-08-13.mdx b/fern/products/sdks/overview/java/changelog/2025-08-13.mdx
new file mode 100644
index 000000000..4c9cfdb4e
--- /dev/null
+++ b/fern/products/sdks/overview/java/changelog/2025-08-13.mdx
@@ -0,0 +1,20 @@
+## 2.40.0
+**`(feat):`** Add support for client-side default parameter values via `use-default-request-parameter-values` flag. 
+When enabled, query and header parameters with defaults become Optional types and defaults are automatically 
+applied when not provided. Example:
+
+```yaml
+customConfig:
+  use-default-request-parameter-values: true
+```
+
+Generated code:
+```java
+// Parameters with defaults become Optional
+private final Optional<Integer> perPage;  // Has default: 50
+
+// Defaults are applied automatically
+QueryStringMapper.addQueryParameter(httpUrl, "per_page", request.getPerPage().orElse(50), false);
+```
+
+