From 624154b4ac78e4691894db288471922ab9b4f674 Mon Sep 17 00:00:00 2001
From: vasiliy-mikhailov <vasiliy-mikhailov@users.noreply.github.com>
Date: Wed, 24 Jun 2026 12:01:43 +0300
Subject: [PATCH] Upgrade to Java 21

Raise the compiler target from 17 to 21. All 1135 tests pass under JDK 21 with none lost.
---
 conformance-tests/client-spring-http-client/pom.xml | 2 +-
 pom.xml                                             | 4 +---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/conformance-tests/client-spring-http-client/pom.xml b/conformance-tests/client-spring-http-client/pom.xml
index cbf0d1970..33e653207 100644
--- a/conformance-tests/client-spring-http-client/pom.xml
+++ b/conformance-tests/client-spring-http-client/pom.xml
@@ -21,7 +21,7 @@
 	</scm>
 
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 		<spring-boot.version>4.1.0</spring-boot.version>
 		<spring-ai.version>2.0.0</spring-ai.version>
 		<spring-ai-mcp-security.version>0.1.13</spring-ai-mcp-security.version>
diff --git a/pom.xml b/pom.xml
index f60f3918b..a1bd54e1a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,9 +54,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
-		<maven.compiler.source>17</maven.compiler.source>
-		<maven.compiler.target>17</maven.compiler.target>
+		<java.version>21</java.version>
 		<surefireArgLine />
 
 		<assert4j.version>3.27.6</assert4j.version>