From 9f4640d62e71a4e9cb4d40a21a6bb00275f166c9 Mon Sep 17 00:00:00 2001
From: Oliver Lietz <info@oliverlietz.de>
Date: Tue, 17 Oct 2023 20:04:41 +0200
Subject: [PATCH] #1085 Modernize Java

* update Java source/target (release) version to 11
* build with Java 11, 17 and 21
* use Maven Compiler Plugin 3.11.0
---
 .github/workflows/maven.yml | 2 +-
 pom/pom.xml                 | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 5424b7061..6a436a573 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java-version: [ 8, 11 ]
+        java-version: [ 11, 17, 21 ]
         os: [ubuntu-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/pom/pom.xml b/pom/pom.xml
index 3f7f1217e..e941c80af 100644
--- a/pom/pom.xml
+++ b/pom/pom.xml
@@ -56,6 +56,9 @@
                         <id>enforce</id>
                         <configuration>
                             <rules>
+                                <requireJavaVersion>
+                                    <version>11</version>
+                                </requireJavaVersion>
                                 <requireMavenVersion>
                                     <version>(3.0.0,)</version>
                                     <message>This project requires Maven 3</message>
@@ -134,9 +137,9 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.11.0</version>
                     <configuration>
-                        <source>1.8</source>
-                        <target>1.8</target>
+                        <release>11</release>
                     </configuration>
                 </plugin>
                 <plugin>