From a19b7c60697b70113fcce19ef3435578fe352399 Mon Sep 17 00:00:00 2001
From: David Whitlock <david.m.whitlock@gmail.com>
Date: Sat, 26 Apr 2025 06:54:39 -0700
Subject: [PATCH] Require Java 21 or later.

---
 .github/workflows/maven.yml | 2 +-
 prerequisites.sh            | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index e316797..d14a533 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ '17', '22' ]
+        java: [ '21', '24' ]
     name: JDK ${{ matrix.Java }}
     steps:
       - uses: actions/checkout@v3
diff --git a/prerequisites.sh b/prerequisites.sh
index 725f1dc..b9aaf8a 100644
--- a/prerequisites.sh
+++ b/prerequisites.sh
@@ -50,8 +50,8 @@ function checkForJava() {
     
     if [[ "$_java" ]]; then
         version=$("$_java" -version 2>&1 | awk -F '"' '/version/ {print $2}')
-        minimumVersion="11"
-        echo You are running Java version "$version"
+        minimumVersion="21"
+        echo "You are running Java version \"$version\""
         if [[ "$version" > "$minimumVersion" ]]; then
             echo This version of Java is sufficient for this course
             return 0