Use JDK 11 for core builds and quiet port scripts

Author: shai-almog

BUILDING.md

@@ -1,26 +1,25 @@
 # Building Codename One
 
-This guide provides reproducible steps to build Codename One locally with Maven, including its Android and iOS ports.
+This guide explains how to build Codename One from source with Maven. It covers the core framework and the Android and iOS ports.
 
 ## Prerequisites
 
-- **JDK 8**
+- **JDK 11**
 - **JDK 17** for building the Android port
 - **Apache Maven 3.6+**
 - macOS with Xcode (required only for the iOS port)
 
-The helper scripts in the `scripts/` directory download these dependencies when they are not already installed. On Apple Silicon
-macOS machines, the scripts download the Intel JDK 8 and run it via Rosetta because an ARM build of JDK 8 is unavailable.
+The helper scripts in the `scripts/` directory download these dependencies when they are not already installed.
 
 ### Installing JDKs on Linux
 
 Download binaries from [Adoptium](https://adoptium.net):
 
 ```bash
-# JDK 8 (Linux x64; adjust `_x64_linux_` for your platform)
-curl -L -o temurin8.tar.gz https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u462-b08/OpenJDK8U-jdk_x64_linux_hotspot_8u462b08.tar.gz
-tar xf temurin8.tar.gz
-export JAVA_HOME=$PWD/jdk8u462-b08
+# JDK 11 (Linux x64; adjust `_x64_linux_` for your platform)
+curl -L -o temurin11.tar.gz https://github.com/adoptium/temurin11-binaries/releases/download/jdk-11.0.28%2B6/OpenJDK11U-jdk_x64_linux_hotspot_11.0.28_6.tar.gz
+tar xf temurin11.tar.gz
+export JAVA_HOME=$PWD/jdk-11.0.28+6
 
 # JDK 17 (Linux x64; adjust `_x64_linux_` for your platform)
 curl -L -o temurin17.tar.gz https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.16%2B8/OpenJDK17U-jdk_x64_linux_hotspot_17.0.16_8.tar.gz
@@ -32,7 +31,7 @@ export PATH="$JAVA_HOME/bin:$PATH"
 
 ## Preparing the workspace
 
-Clone the repository and run the setup script to download JDK 8 and JDK 17, install Maven, build the core modules, and install the Maven archetypes. This step must be performed before building any ports.
+Clone the repository and run the setup script to download JDK 11 and JDK 17, install Maven, build the core modules, and install the Maven archetypes. This step must be performed before building any ports.
 
 ```bash
 git clone https://github.com/codenameone/CodenameOne
@@ -45,8 +44,7 @@ The script runs `mvn install` in `maven/`, installs `cn1-maven-archetypes`, and
 
 ## Building the Android port
 
-The Android port uses JDK 17 for compilation while Maven runs with JDK 8. Javadoc generation is skipped to avoid known Maven
-report issues. Run the build script:
+The Android port uses JDK 17 for compilation while Maven runs with JDK 11. Javadoc generation is skipped to avoid known Maven report issues. Run the build script:
 
 ```bash
 ./scripts/build-android-port.sh -DskipTests
@@ -66,9 +64,9 @@ Artifacts are produced in `maven/ios/target`.
 
 ## Convenience scripts
 
-- `setup-workspace.sh` – installs Maven, downloads JDK 8 and JDK 17, builds the core modules, installs Maven archetypes, provisions the Codename One build client, and writes `tools/env.sh`.
-- `build-android-port.sh` – builds the Android port using JDK 8 for Maven and JDK 17 for compilation.
-- `build-ios-port.sh` – builds the iOS port on macOS with JDK 8.
+- `setup-workspace.sh` – installs Maven, downloads JDK 11 and JDK 17, builds the core modules, installs Maven archetypes, provisions the Codename One build client, and writes `tools/env.sh`.
+- `build-android-port.sh` – builds the Android port using JDK 11 for Maven and JDK 17 for compilation.
+- `build-ios-port.sh` – builds the iOS port on macOS with JDK 11.
 
 ## Further reading
 

scripts/build-android-port.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Build Codename One Android port using JDK 8 for Maven and JDK 17 for compilation
+# Build Codename One Android port using JDK 11 for Maven and JDK 17 for compilation
 set -euo pipefail
 ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 cd "$ROOT"
@@ -11,12 +11,12 @@ else
   source "$ROOT/tools/env.sh"
 fi
 
-if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '1\.8'; then
+if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '11\.0'; then
   ./scripts/setup-workspace.sh -q -DskipTests
   source "$ROOT/tools/env.sh"
 fi
-if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '1\.8'; then
-  echo "Failed to provision JDK 8" >&2
+if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '11\.0'; then
+  echo "Failed to provision JDK 11" >&2
   exit 1
 fi
 if ! "${JAVA_HOME_17:-}/bin/java" -version 2>&1 | grep -q '17\.0'; then
@@ -40,4 +40,4 @@ if [ ! -f "$BUILD_CLIENT" ]; then
   fi
 fi
 
-"$MAVEN_HOME/bin/mvn" -q -f maven/pom.xml -pl android -am -Dmaven.javadoc.skip=true clean install "$@"
+"$MAVEN_HOME/bin/mvn" -q -f maven/pom.xml -pl android -am -Dmaven.javadoc.skip=true -Djava.awt.headless=true clean install "$@"

scripts/build-ios-port.sh

@@ -17,12 +17,12 @@ else
   ./scripts/setup-workspace.sh -q -DskipTests
   source "$ROOT/tools/env.sh"
 fi
-if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '1\.8'; then
+if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '11\.0'; then
   ./scripts/setup-workspace.sh -q -DskipTests
   source "$ROOT/tools/env.sh"
 fi
-if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '1\.8'; then
-  echo "Failed to provision JDK 8" >&2
+if ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '11\.0'; then
+  echo "Failed to provision JDK 11" >&2
   exit 1
 fi
 export PATH="$JAVA_HOME/bin:$MAVEN_HOME/bin:$PATH"
@@ -36,4 +36,4 @@ if [ ! -f "$BUILD_CLIENT" ]; then
   fi
 fi
 
-"$MAVEN_HOME/bin/mvn" -q -f maven/pom.xml -pl ios -am clean install "$@"
+"$MAVEN_HOME/bin/mvn" -q -f maven/pom.xml -pl ios -am -Djava.awt.headless=true clean install "$@"

scripts/setup-workspace.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 ###
-# Prepare Codename One workspace by installing Maven, provisioning JDK 8 and JDK 17,
+# Prepare Codename One workspace by installing Maven, provisioning JDK 11 and JDK 17,
 # building core modules, and installing Maven archetypes.
 ###
 set -euo pipefail
@@ -31,15 +31,9 @@ case "$arch_name" in
   *) echo "Unsupported architecture: $arch_name" >&2; exit 1 ;;
 esac
 
-# JDK 8 is not available for Apple Silicon. Use the Intel build when running on macOS ARM.
-jdk8_arch="$arch"
-jdk17_arch="$arch"
-if [ "$os" = "mac" ] && [ "$arch" = "aarch64" ]; then
-  jdk8_arch="x64"
-fi
-
-JDK8_URL="https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u462-b08/OpenJDK8U-jdk_${jdk8_arch}_${os}_hotspot_8u462b08.tar.gz"
-JDK17_URL="https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.16%2B8/OpenJDK17U-jdk_${jdk17_arch}_${os}_hotspot_17.0.16_8.tar.gz"
+# Determine platform-specific JDK download URLs
+JDK11_URL="https://github.com/adoptium/temurin11-binaries/releases/download/jdk-11.0.28%2B6/OpenJDK11U-jdk_${arch}_${os}_hotspot_11.0.28_6.tar.gz"
+JDK17_URL="https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.16%2B8/OpenJDK17U-jdk_${arch}_${os}_hotspot_17.0.16_8.tar.gz"
 MAVEN_URL="https://archive.apache.org/dist/maven/maven-3/3.9.6/binaries/apache-maven-3.9.6-bin.tar.gz"
 
 install_jdk() {
@@ -58,12 +52,12 @@ install_jdk() {
   eval "$dest_var=\"$home\""
 }
 
-log "Ensuring JDK 8 is available"
-if [ ! -x "${JAVA_HOME:-}/bin/java" ] || ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '1\.8'; then
-  log "Provisioning JDK 8 (this may take a while)..."
-  install_jdk "$JDK8_URL" JAVA_HOME
+log "Ensuring JDK 11 is available"
+if [ ! -x "${JAVA_HOME:-}/bin/java" ] || ! "${JAVA_HOME:-}/bin/java" -version 2>&1 | grep -q '11\.0'; then
+  log "Provisioning JDK 11 (this may take a while)..."
+  install_jdk "$JDK11_URL" JAVA_HOME
 else
-  log "Using existing JDK 8 at $JAVA_HOME"
+  log "Using existing JDK 11 at $JAVA_HOME"
 fi
 
 log "Ensuring JDK 17 is available"
@@ -96,14 +90,14 @@ ENV
 
 source "$TOOLS/env.sh"
 
-log "JDK 8 version:"; "$JAVA_HOME/bin/java" -version
+log "JDK 11 version:"; "$JAVA_HOME/bin/java" -version
 log "JDK 17 version:"; "$JAVA_HOME_17/bin/java" -version
 log "Maven version:"; "$MAVEN_HOME/bin/mvn" -version
 
 PATH="$JAVA_HOME/bin:$MAVEN_HOME/bin:$PATH"
 
 log "Building Codename One core modules"
-"$MAVEN_HOME/bin/mvn" -f maven/pom.xml -DskipTests install "$@"
+"$MAVEN_HOME/bin/mvn" -q -f maven/pom.xml -DskipTests -Djava.awt.headless=true install "$@"
 
 BUILD_CLIENT="$HOME/.codenameone/CodeNameOneBuildClient.jar"
 log "Ensuring CodeNameOneBuildClient.jar is installed"
@@ -119,4 +113,4 @@ log "Installing cn1-maven-archetypes"
 if [ ! -d cn1-maven-archetypes ]; then
   git clone https://github.com/shannah/cn1-maven-archetypes
 fi
-(cd cn1-maven-archetypes && "$MAVEN_HOME/bin/mvn" -DskipTests -Dinvoker.skip=true install)
+(cd cn1-maven-archetypes && "$MAVEN_HOME/bin/mvn" -q -DskipTests -DskipITs=true -Dinvoker.skip=true install)