From ebe16bef9de7c7535878f90bf1e32ba85eff36c2 Mon Sep 17 00:00:00 2001
From: Vasiliy Mikhailov <vasiliy.mikhailov@gmail.com>
Date: Sat, 6 Jun 2026 14:07:34 +0300
Subject: [PATCH] Upgrade to Java 21

Bump java.version 17 -> 21 and CI JDK to 21. All 128 tests pass under Temurin 21.
---
 .github/workflows/pipeline.yml | 4 ++--
 pom.xml                        | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/pipeline.yml b/.github/workflows/pipeline.yml
index 74b44d809..06b78c067 100644
--- a/.github/workflows/pipeline.yml
+++ b/.github/workflows/pipeline.yml
@@ -14,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
           cache: maven
           server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
diff --git a/pom.xml b/pom.xml
index f455d53cc..0e3e78ad9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -69,7 +69,7 @@
     </scm>
 
     <properties>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>