Use java 25 almost everywhere to remove no longer used workaround

Before java 11 was used for most examples, but for maven to run also java 17 was used.

Author: anneloredev

.envrc-template

@@ -10,20 +10,14 @@
 # Note: This file contains the minimal environment variables needed to run the examples.
 # For more configuration options, see jigsaw-examples/env.sh
 #
+# todo: is this still true, or does it rather automatically configure JDK 25.0.1
 # SDKMAN Users: If you use SDKMAN with sdkman_auto_env=true, the .sdkmanrc file
 # will automatically configure JDK 11.0.28. This may interfere with JAVA_HOME
 # settings below. Either disable sdkman_auto_env or ensure paths match.
 
-# Path to JDK 17 or later (required for example_gradle-project with Gradle 9.x)
-export JAVA17_HOME=/path/to/jdk17
-
-# Path to JDK 9, 10, or 11 (required for most examples, JDK 17 is also fine)
-# Strongly recommended: JDK 11.0.28 (Temurin) - cf. README
-export JAVA_HOME=/path/to/java9-or-10-or-11-jdk
-
-# Path to JDK 11 specifically (required for examples that need JDK 11)
-# Strongly recommended: JDK 11.0.28 (Temurin) - cf. README
-export JAVA11_HOME=/path/to/java11-jdk
+# Path to JDK 25 (required for most examples)
+# Strongly recommended: JDK 25.0.1 (Temurin) - cf. README
+export JAVA_HOME=/path/to/java25-jdk
 
 # Path to JDK 8 (only needed for example_compile-target-jdk8)
 # If you want to explicitly test with JDK 8

jigsaw-examples/env.sh

@@ -5,20 +5,14 @@ set -eu -o pipefail
 
 # configure paths here
 
-# Path to JDK9 or JDK10 (9.0.1, 9.0.4 and 10_18.3_10+46 have been tested)
-# Recommended: JDK 11.0.28 (Temurin) - same as CI/CD pipeline
-# SDKMAN Users: .sdkmanrc at repository root configures JDK 11.0.28 automatically
-[ -z "${JAVA_HOME:-}" ] && export JAVA_HOME=TODO/path/to/java9-or-10-jdk/goes/here
+# Path to JDK25
+# Recommended: JDK 25.0.1 (Temurin) - same as CI/CD pipeline
+# SDKMAN Users: .sdkmanrc at repository root configures JDK 25.0.1 automatically
+[ -z "${JAVA_HOME:-}" ] && export JAVA_HOME=TODO/path/to/java25-jdk/goes/here
 
 # Path to JDK8, only needed in example_compile-target-jdk8 (and special profile in example_spring-hibernate)
 [ -z "${JAVA8_HOME:-}" ] && export JAVA8_HOME=TODO/path/to/java8-jdk/goes/here
 
-# Path to JDK11, only needed for specific examples (e.g., example_version/m4 runtime)
-[ -z "${JAVA11_HOME:-}" ] && export JAVA11_HOME=TODO/path/to/java11-jdk/goes/here
-
-# Path to JDK17, only needed in example_gradle-project and Maven 4 builds
-[ -z "${JAVA17_HOME:-}" ] && export JAVA17_HOME=TODO/path/to/java17-jdk/goes/here
-
 # Path to Eclipse (legacy compatibility, not recommended for new work)
 [ -z "${ECLIPSE_HOME:-}" ] && export ECLIPSE_HOME=TODO/path/to/eclipse/goes/here
 

jigsaw-examples/example_addExports_manifest/m4/compile.sh

@@ -27,7 +27,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, targets Java 11 via maven.compiler.source/target)"
+echo "(Maven runs with JDK 17+, targets Java 25 via maven.compiler.source/target)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_addExports_manifest/m4/run.sh

@@ -4,30 +4,24 @@ set -eu -o pipefail
 # shellcheck source=../../env.sh
 source ../../env.sh
 
-# Use JDK 11 for runtime (required to access JDK 11 internals)
-if [ -z "${JAVA11_HOME:-}" ]; then
-  echo "ERROR: JAVA11_HOME is not set. This example requires JDK 11 to run."
-  exit 1
-fi
-
 # Show Java version for user information
 echo "Using Java version:"
-"${JAVA11_HOME}/bin/java" -version
+"${JAVA_HOME}/bin/java" -version
 echo
 
 # Create run-result directory if it doesn't exist
 mkdir -p run-result
 
 # First run: Allow access to moda without using the "Add-Exports" entry from MANIFEST.MF
 # shellcheck disable=SC2086  # JAVA_OPTIONS is intentionally unquoted for word splitting
-"${JAVA11_HOME}/bin/java" ${JAVA_OPTIONS} \
+"${JAVA_HOME}/bin/java" ${JAVA_OPTIONS} \
    --add-exports java.base/jdk.internal.org.xml.sax=modmain \
    --add-exports moda/pkgainternal=modmain \
    --module-path mlib --module modmain/pkgmain.Main 2>&1 | normalize | tee run-result/run.txt | myecho
 
 # Second run: Allow access to moda with using the "Add-Exports" entry from MANIFEST.MF
 # shellcheck disable=SC2086  # JAVA_OPTIONS is intentionally unquoted for word splitting
-"${JAVA11_HOME}/bin/java" ${JAVA_OPTIONS} \
+"${JAVA_HOME}/bin/java" ${JAVA_OPTIONS} \
    --add-modules moda \
    --module-path mlib \
    -jar mlib/modmain.jar 2>&1 | normalize | tee -a run-result/run.txt | myecho

jigsaw-examples/example_addReads_addExports/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_addReads_addExports_reflection/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_annotations/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_automatic-module-logging/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_derived_private-package-protected/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)

jigsaw-examples/example_exceptions/m4/compile.sh

@@ -10,13 +10,6 @@ if [ -z "${M4_HOME:-}" ]; then
   exit 1
 fi
 
-# Maven 4 requires Java 17+ to run
-# Note: pom.xml has <maven.compiler.release>11</maven.compiler.release> which ensures
-# Java 11 compatible bytecode even when using JDK 17 compiler with --release 11
-if [ -n "${JAVA17_HOME:-}" ]; then
-  export JAVA_HOME="${JAVA17_HOME}"
-fi
-
 # Add Maven 4 to PATH
 export PATH="${M4_HOME}/bin:${PATH}"
 
@@ -27,7 +20,7 @@ mvn --version
 echo
 
 echo "mvn clean compile"
-echo "(Maven runs with JDK 17, compiles for Java 11 via maven.compiler.release)"
+echo "(Maven runs with JDK 17+, compiles for Java 25 via maven.compiler.release)"
 mvn clean compile
 
 # Create JARs directly to mlib (similar to original compile.sh)