Fixup: update launcher scripts, make scala plugin use maven.compiler.release

Author: sstone

eclair-front/src/main/resources/eclair-front.sh

@@ -284,17 +284,18 @@ java_version_check() {
     echo
     echo No java installations was detected.
     echo Please go to 'https://adoptium.net/temurin/releases/?package=jre&version=21' and download
+    echo a valid Java Runtime and install before running eclair-front.
     echo
     exit 1
   else
     local major=$(echo "$java_version" | cut -d'.' -f1)
     if [[ "$major" -eq "1" ]]; then
      local major=$(echo "$java_version" | cut -d'.' -f2)
     fi
-    if [[ "$major" -lt "8" ]]; then
+    if [[ "$major" -lt "21" ]]; then
       echo
       echo The java installation you have is not up to date, eclair-front requires
-      echo at least version 1.8+ \(version 11 recommended\) but you have version $java_version
+      echo at least version 21+ \(version 21 recommended\) but you have version $java_version
       echo
       echo Please go to 'https://adoptium.net/temurin/releases/?package=jre&version=21' and download
       echo a valid Java Runtime and install before running eclair-front.

eclair-node/src/main/resources/eclair-node.sh

@@ -284,17 +284,18 @@ java_version_check() {
     echo
     echo No java installations was detected.
     echo Please go to 'https://adoptium.net/temurin/releases/?package=jdk&version=21' and download
+    echo a valid Java Runtime and install before running eclair-node.
     echo
     exit 1
   else
     local major=$(echo "$java_version" | cut -d'.' -f1)
     if [[ "$major" -eq "1" ]]; then
      local major=$(echo "$java_version" | cut -d'.' -f2)
     fi
-    if [[ "$major" -lt "8" ]]; then
+    if [[ "$major" -lt "21" ]]; then
       echo
       echo The java installation you have is not up to date, eclair-node requires
-      echo at least version 1.8+ \(version 11 recommended\) but you have version $java_version
+      echo at least version 21+ \(version 21 recommended\) but you have version $java_version
       echo
       echo Please go to 'https://adoptium.net/temurin/releases/?package=jdk&version=21' and download
       echo a valid Java Runtime and install before running eclair-node.

pom.xml

@@ -150,7 +150,7 @@
                         <arg>-Werror</arg>
                         <arg>-unchecked</arg>
                         <arg>-deprecation</arg>
-                        <arg>-release:21</arg>
+                        <arg>-release:${maven.compiler.release}</arg>
                     </args>
                     <jvmArgs>
                         <jvmArg>-Xmx1024m</jvmArg>