关于jd-gui启动报This program requires Java 1.8+的错误

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最近,在Mac使用上JD-GUI启动时,报了如下的错误:

ERROR launching 'JD-GUI'
 
No suitable Java version found on your system!
This program requires Java 1.8+
Make sure you install the required Java version.

解决方法:
在“访达”中,右击JD-GUI图标,点击“显示包内容”。

然后,打开“Contents/MacOS/universalJavaApplicationStub.sh”文件,使用以下内容替换,保存即可。

#!/bin/bash
##################################################################################
#                                                                                #
# universalJavaApplicationStub                                                   #
#                                                                                #
# A BASH based JavaApplicationStub for Java Apps on Mac OS X                     #
# that works with both Apple's and Oracle's plist format.                        #
#                                                                                #
# Inspired by Ian Roberts stackoverflow answer                                   #
# at http://stackoverflow.com/a/17546508/1128689                                 #
#                                                                                #
# @author    Tobias Fischer                                                      #
# @url       https://github.com/tofi86/universalJavaApplicationStub              #
# @date      2020-03-19                                                          #
# @version   3.0.6                                                               #
#                                                                                #
##################################################################################
#                                                                                #
# The MIT License (MIT)                                                          #
#                                                                                #
# Copyright (c) 2014-2020 Tobias Fischer                                         #
#                                                                                #
# Permission is hereby granted, free of charge, to any person obtaining a copy   #
# of this software and associated documentation files (the "Software"), to deal  #
# in the Software without restriction, including without limitation the rights   #
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell      #
# copies of the Software, and to permit persons to whom the Software is          #
# furnished to do so, subject to the following conditions:                       #
#                                                                                #
# The above copyright notice and this permission notice shall be included in all #
# copies or substantial portions of the Software.                                #
#                                                                                #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR     #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,       #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE    #
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER         #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  #
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  #
# SOFTWARE.                                                                      #
#                                                                                #
##################################################################################
 
 
 
# function 'stub_logger()'
#
# A logger which logs to the macOS Console.app using the 'syslog' command
#
# @param1  the log message
# @return  void
################################################################################
function stub_logger() 
    syslog -s -k \\
        Facility com.apple.console \\
        Level Notice \\
        Sender "$(basename "$0")" \\
        Message "[$$][$CFBundleName:-$(basename "$0")] $1"

 
 
 
# set the directory abspath of the current
# shell script with symlinks being resolved
############################################
 
PRG=$0
while [ -h "$PRG" ]; do
    ls=$(ls -ld "$PRG")
    link=$(expr "$ls" : '^.*-> \\(.*\\)$' 2>/dev/null)
    if expr "$link" : '^/' 2> /dev/null >/dev/null; then
        PRG="$link"
    else
        PRG="$(dirname "$PRG")/$link"
    fi
done
PROGDIR=$(dirname "$PRG")
stub_logger "[StubDir] $PROGDIR"
 
 
 
# set files and folders
############################################
 
# the absolute path of the app package
cd "$PROGDIR"/../../ || exit 11
AppPackageFolder=$(pwd)
 
# the base path of the app package
cd .. || exit 12
AppPackageRoot=$(pwd)
 
# set Apple's Java folder
AppleJavaFolder="$AppPackageFolder"/Contents/Resources/Java
 
# set Apple's Resources folder
AppleResourcesFolder="$AppPackageFolder"/Contents/Resources
 
# set Oracle's Java folder
OracleJavaFolder="$AppPackageFolder"/Contents/Java
 
# set Oracle's Resources folder
OracleResourcesFolder="$AppPackageFolder"/Contents/Resources
 
# set path to Info.plist in bundle
InfoPlistFile="$AppPackageFolder"/Contents/Info.plist
 
# set the default JVM Version to a null string
JVMVersion=""
JVMMaxVersion=""
 
 
 
# function 'plist_get()'
#
# read a specific Plist key with 'PlistBuddy' utility
#
# @param1  the Plist key with leading colon ':'
# @return  the value as String or Array
################################################################################
plist_get()
    /usr/libexec/PlistBuddy -c "print $1" "$InfoPlistFile" 2> /dev/null

 
# function 'plist_get_java()'
#
# read a specific Plist key with 'PlistBuddy' utility
# in the 'Java' or 'JavaX' dictionary (<dict>)
#
# @param1  the Plist :Java(X):Key with leading colon ':'
# @return  the value as String or Array
################################################################################
plist_get_java()
    plist_get $JavaKey:-":Java"$1

 
 
 
# read Info.plist and extract JVM options
############################################
 
# read the program name from CFBundleName
CFBundleName=$(plist_get ':CFBundleName')
 
# read the icon file name
CFBundleIconFile=$(plist_get ':CFBundleIconFile')
 
 
# check Info.plist for Apple style Java keys -> if key :Java is present, parse in apple mode
/usr/libexec/PlistBuddy -c "print :Java" "$InfoPlistFile" > /dev/null 2>&1
exitcode=$?
JavaKey=":Java"
 
# if no :Java key is present, check Info.plist for universalJavaApplication style JavaX keys -> if key :JavaX is present, parse in apple mode
if [ $exitcode -ne 0 ]; then
    /usr/libexec/PlistBuddy -c "print :JavaX" "$InfoPlistFile" > /dev/null 2>&1
    exitcode=$?
    JavaKey=":JavaX"
fi
 
 
# read 'Info.plist' file in Apple style if exit code returns 0 (true, ':Java' key is present)
if [ $exitcode -eq 0 ]; then
    stub_logger "[PlistStyle] Apple"
 
    # set Java and Resources folder
    JavaFolder="$AppleJavaFolder"
    ResourcesFolder="$AppleResourcesFolder"
 
    APP_PACKAGE="$AppPackageFolder"
    JAVAROOT="$AppleJavaFolder"
    USER_HOME="$HOME"
 
 
    # read the Java WorkingDirectory
    JVMWorkDir=$(plist_get_java ':WorkingDirectory' | xargs)
    # set Working Directory based upon PList value
    if [[ ! -z $JVMWorkDir ]]; then
        WorkingDirectory="$JVMWorkDir"
    else
        # AppPackageRoot is the standard WorkingDirectory when the script is started
        WorkingDirectory="$AppPackageRoot"
    fi
    # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
    WorkingDirectory=$(eval echo "$WorkingDirectory")
 
 
    # read the MainClass name
    JVMMainClass="$(plist_get_java ':MainClass')"
 
    # read the SplashFile name
    JVMSplashFile=$(plist_get_java ':SplashFile')
 
    # read the JVM Properties as an array and retain spaces
    IFS=$'\\t\\n'
    JVMOptions=($(xargs -n1 <<<$(plist_get_java ':Properties' | grep " =" | sed 's/^ */-D/g' | sed -E 's/ = (.*)$/="\\1"/g')))
    unset IFS
    # post processing of the array follows further below...
 
    # read the ClassPath in either Array or String style
    JVMClassPath_RAW=$(plist_get_java ':ClassPath' | xargs)
    if [[ $JVMClassPath_RAW == *Array* ]] ; then
        JVMClassPath=.$(plist_get_java ':ClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\\n' | xargs)
    else
        JVMClassPath=$JVMClassPath_RAW
    fi
    # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
    JVMClassPath=$(eval echo "$JVMClassPath")
 
    # read the JVM Options in either Array or String style
    JVMDefaultOptions_RAW=$(plist_get_java ':VMOptions' | xargs)
    if [[ $JVMDefaultOptions_RAW == *Array* ]] ; then
        JVMDefaultOptions=$(plist_get_java ':VMOptions' | grep "    " | sed 's/^ */ /g' | tr -d '\\n' | xargs)
    else
        JVMDefaultOptions=$JVMDefaultOptions_RAW
    fi
 
    # read StartOnMainThread and add as -XstartOnFirstThread
    JVMStartOnMainThread=$(plist_get_java ':StartOnMainThread')
    if [ "$JVMStartOnMainThread" == "true" ]; then
        JVMDefaultOptions+=" -XstartOnFirstThread"
    fi
 
    # read the JVM Arguments in either Array or String style (#76) and retain spaces
    IFS=$'\\t\\n'
    MainArgs_RAW=$(plist_get_java ':Arguments' | xargs)
    if [[ $MainArgs_RAW == *Array* ]] ; then
        MainArgs=($(xargs -n1 <<<$(plist_get_java ':Arguments' | tr -d '\\n' | sed -E 's/Array \\ *(.*) *\\/\\1/g' | sed 's/  */ /g')))
    else
        MainArgs=($(xargs -n1 <<<$(plist_get_java ':Arguments')))
    fi
    unset IFS
    # post processing of the array follows further below...
 
    # read the Java version we want to find
    JVMVersion=$(plist_get_java ':JVMVersion' | xargs)
    # post processing of the version string follows below...
 
 
# read 'Info.plist' file in Oracle style
else
    stub_logger "[PlistStyle] Oracle"
 
    # set Working Directory and Java and Resources folder
    JavaFolder="$OracleJavaFolder"
    ResourcesFolder="$OracleResourcesFolder"
    WorkingDirectory="$OracleJavaFolder"
 
    APP_ROOT="$AppPackageFolder"
 
    # read the MainClass name
    JVMMainClass="$(plist_get ':JVMMainClassName')"
 
    # read the SplashFile name
    JVMSplashFile=$(plist_get ':JVMSplashFile')
 
    # read the JVM Options as an array and retain spaces
    IFS=$'\\t\\n'
    JVMOptions=($(plist_get ':JVMOptions' | grep "    " | sed 's/^ *//g'))
    unset IFS
    # post processing of the array follows further below...
 
    # read the ClassPath in either Array or String style
    JVMClassPath_RAW=$(plist_get ':JVMClassPath')
    if [[ $JVMClassPath_RAW == *Array* ]] ; then
        JVMClassPath=.$(plist_get ':JVMClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\\n' | xargs)
        # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
        JVMClassPath=$(eval echo "$JVMClassPath")
 
    elif [[ ! -z $JVMClassPath_RAW ]] ; then
        JVMClassPath=$JVMClassPath_RAW
        # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
        JVMClassPath=$(eval echo "$JVMClassPath")
 
    else
        #default: fallback to OracleJavaFolder
        JVMClassPath="$JavaFolder/*"
        # Do NOT expand the default 'AppName.app/Contents/Java/*' classpath (#42)
    fi
 
    # read the JVM Default Options
    JVMDefaultOptions=$(plist_get ':JVMDefaultOptions' | grep -o " \\-.*" | tr -d '\\n' | xargs)
 
    # read the Main Arguments from JVMArguments key as an array and retain spaces (see #46 for naming details)
    IFS=$'\\t\\n'
    MainArgs=($(xargs -n1 <<<$(plist_get ':JVMArguments' | tr -d '\\n' | sed -E 's/Array \\ *(.*) *\\/\\1/g' | sed 's/  */ /g')))
    unset IFS
    # post processing of the array follows further below...
 
    # read the Java version we want to find
    JVMVersion=$(plist_get ':JVMVersion' | xargs)
    # post processing of the version string follows below...
fi
 
 
# (#75) check for undefined icons or icon names without .icns extension and prepare
# an osascript statement for those cases when the icon can be shown in the dialog
DialogWithIcon=""
if [ ! -z $CFBundleIconFile ]; then
    if [[ $CFBundleIconFile == *.icns ]] && [[ -f "$ResourcesFolder/$CFBundleIconFile" ]] ; then
        DialogWithIcon=" with icon path to resource \\"$CFBundleIconFile\\" in bundle (path to me)"
    elif [[ $CFBundleIconFile != *.icns ]] && [[ -f "$ResourcesFolder/$CFBundleIconFile.icns" ]] ; then
        CFBundleIconFile+=".icns"
        DialogWithIcon=" with icon path to resource \\"$CFBundleIconFile\\" in bundle (path to me)"
    fi
fi
 
 
# JVMVersion: post processing and optional splitting
if [[ $JVMVersion == *";"* ]]; then
    minMaxArray=($JVMVersion//;/ )
    JVMVersion=$minMaxArray[0]//+
    JVMMaxVersion=$minMaxArray[1]//+
fi
stub_logger "[JavaRequirement] JVM minimum version: $JVMVersion"
stub_logger "[JavaRequirement] JVM maximum version: $JVMMaxVersion"
 
# MainArgs: replace occurences of $APP_ROOT with its content
MainArgsArr=()
for i in "$MainArgs[@]"
do
    MainArgsArr+=("$(eval echo "$i")")
done
 
# JVMOptions: replace occurences of $APP_ROOT with its content
JVMOptionsArr=()
for i in "$JVMOptions[@]"
do
    JVMOptionsArr+=("$(eval echo "$i")")
done
 
 
# internationalized messages
############################################
 
LANG=$(defaults read -g AppleLocale)
stub_logger "[Language] $LANG"
 
# French localization
if [[ $LANG == fr* ]] ; then
    MSG_ERROR_LAUNCHING="ERREUR au lancement de '$CFBundleName'."
    MSG_MISSING_MAINCLASS="'MainClass' n'est pas spécifié.\\nL'application Java ne peut pas être lancée."
    MSG_JVMVERSION_REQ_INVALID="La syntaxe de la version de Java demandée est invalide: %s\\nVeuillez contacter le développeur de l'application."
    MSG_NO_SUITABLE_JAVA="La version de Java installée sur votre système ne convient pas.\\nCe programme nécessite Java %s"
    MSG_JAVA_VERSION_OR_LATER="ou ultérieur"
    MSG_JAVA_VERSION_LATEST="(dernière mise à jour)"
    MSG_JAVA_VERSION_MAX="à %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Merci de bien vouloir installer la version de Java requise."
    MSG_INSTALL_JAVA="Java doit être installé sur votre système.\\nRendez-vous sur java.com et suivez les instructions d'installation..."
    MSG_LATER="Plus tard"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
 
# German localization
elif [[ $LANG == de* ]] ; then
    MSG_ERROR_LAUNCHING="FEHLER beim Starten von '$CFBundleName'."
    MSG_MISSING_MAINCLASS="Die 'MainClass' ist nicht spezifiziert!\\nDie Java-Anwendung kann nicht gestartet werden!"
    MSG_JVMVERSION_REQ_INVALID="Die Syntax der angeforderten Java-Version ist ungültig: %s\\nBitte kontaktieren Sie den Entwickler der App."
    MSG_NO_SUITABLE_JAVA="Es wurde keine passende Java-Version auf Ihrem System gefunden!\\nDieses Programm benötigt Java %s"
    MSG_JAVA_VERSION_OR_LATER="oder neuer"
    MSG_JAVA_VERSION_LATEST="(neuste Unterversion)"
    MSG_JAVA_VERSION_MAX="bis %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Stellen Sie sicher, dass die angeforderte Java-Version installiert ist."
    MSG_INSTALL_JAVA="Auf Ihrem System muss die 'Java'-Software installiert sein.\\nBesuchen Sie java.com für weitere Installationshinweise."
    MSG_LATER="Später"
    MSG_VISIT_JAVA_DOT_COM="Java von Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java von AdoptOpenJDK"
 
# Simplifyed Chinese localization
elif [[ $LANG == zh* ]] ; then
    MSG_ERROR_LAUNCHING="无法启动 '$CFBundleName'."
    MSG_MISSING_MAINCLASS="没有指定 'MainClass'!\\nJava程序无法启动!"
    MSG_JVMVERSION_REQ_INVALID="Java版本参数语法错误: %s\\n请联系该应用的开发者。"
    MSG_NO_SUITABLE_JAVA="没有在系统中找到合适的Java版本!\\n必须安装Java %s才能够使用该程序!"
    MSG_JAVA_VERSION_OR_LATER="及以上版本"
    MSG_JAVA_VERSION_LATEST="(最新版本)"
    MSG_JAVA_VERSION_MAX="最高为 %s"
    MSG_NO_SUITABLE_JAVA_CHECK="请确保系统中安装了所需的Java版本"
    MSG_INSTALL_JAVA="你需要在Mac中安装Java运行环境!\\n访问 java.com 了解如何安装。"
    MSG_LATER="稍后"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
 
# English default localization
else
    MSG_ERROR_LAUNCHING="ERROR launching '$CFBundleName'."
    MSG_MISSING_MAINCLASS="'MainClass' isn't specified!\\nJava application cannot be started!"
    MSG_JVMVERSION_REQ_INVALID="The syntax of the required Java version is invalid: %s\\nPlease contact the App developer."
    MSG_NO_SUITABLE_JAVA="No suitable Java version found on your system!\\nThis program requires Java %s"
    MSG_JAVA_VERSION_OR_LATER="or later"
    MSG_JAVA_VERSION_LATEST="(latest update)"
    MSG_JAVA_VERSION_MAX="up to %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Make sure you install the required Java version."
    MSG_INSTALL_JAVA="You need to have JAVA installed on your Mac!\\nVisit java.com for installation instructions..."
    MSG_LATER="Later"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
fi
 
 
 
# function 'get_java_version_from_cmd()'
#
# returns Java version string from 'java -version' command
# works for both old (1.8) and new (9) version schema
#
# @param1  path to a java JVM executable
# @return  the Java version number as displayed in 'java -version' command
################################################################################
function get_java_version_from_cmd() 
    # second sed command strips " and -ea from the version string
    echo $("$1" -version 2>&1 | awk '/version/print $3' | sed -E 's/"//g;s/-ea//g')

 
 
# function 'extract_java_major_version()'
#
# extract Java major version from a version string
#
# @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
# @return  the major version (e.g. '7', '8' or '9', etc.)
################################################################################
function extract_java_major_version() 
    echo $(echo "$1" | sed -E 's/^1\\.//;s/^([0-9]+)(-ea|(\\.[0-9_.]1,7)?)(-b[0-9]+-[0-9]+)?[+*]?$/\\1/')

 
 
# function 'get_comparable_java_version()'
#
# return comparable version for a Java version number or requirement string
#
# @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
# @return  an 8 digit numeral ('1.8.0_45'->'08000045'; '9.1.13'->'09001013')
################################################################################
function get_comparable_java_version() 
    # cleaning: 1) remove leading '1.'; 2) remove build string (e.g. '-b14-468'); 3) remove 'a-Z' and '-*+' (e.g. '-ea'); 4) replace '_' with '.'
    local cleaned=$(echo "$1" | sed -E 's/^1\\.//g;s/-b[0-9]+-[0-9]+$//g;s/[a-zA-Z+*\\-]//g;s/_/./g')
    # splitting at '.' into an array
    local arr=( $cleaned//./  )
    # echo a string with left padded version numbers
    echo "$(printf '%02s' $arr[0])$(printf '%03s' $arr[1])$(printf '%03s' $arr[2])"

 
 
# function 'is_valid_requirement_pattern()'
#
# check whether the Java requirement is a valid requirement pattern
#
# supported requirements are for example:
# - 1.6       requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6*      requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6+      requires Java 6 or higher         [1.6, 1.6.0_45, 1.8, 9, etc.]
# - 1.6.0     requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6.0_45  requires Java 6u45                [1.6.0_45]
# - 1.6.0_45+ requires Java 6u45 or higher      [1.6.0_45, 1.6.0_88, 1.8, etc.]
# - 9         requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9*        requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9+        requires Java 9 or higher         [9.0, 9.1, 10, etc.]
# - 9.1       requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1*      requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1+      requires Java 9.1 or higher       [9.1, 9.2, 10, etc.]
# - 9.1.3     requires Java 9.1.3               [9.1.3]
# - 9.1.3*    requires Java 9.1.3 (any update)  [9.1.3]
# - 9.1.3+    requires Java 9.1.3 or higher     [9.1.3, 9.1.4, 9.2.*, 10, etc.]
# - 10-ea     requires Java 10 (early access release)
#
# unsupported requirement patterns are for example:
# - 1.2, 1.3, 1.9       Java 2, 3 are not supported
# - 1.9                 Java 9 introduced a new versioning scheme
# - 6u45                known versioning syntax, but unsupported
# - 9-ea*, 9-ea+        early access releases paired with */+
# - 9., 9.*, 9.+        version ending with a .
# - 9.1., 9.1.*, 9.1.+  version ending with a .
# - 9.3.5.6             4 part version number is unsupported
#
# @param1  a Java requirement string ('1.8+')
# @return  boolean exit code: 0 (is valid), 1 (is not valid)
################################################################################
function is_valid_requirement_pattern() 
    local java_req=$1
    java8pattern='1\\.[4-8](\\.[0-9]+)?(\\.0_[0-9]+)?[*+]?'
    java9pattern='(9|1[0-9])(-ea|[*+]|(\\.[0-9]+)1,2[*+]?)?'
    # test matches either old Java versioning scheme (up to 1.8) or new scheme (starting with 9)
    if [[ $java_req =~ ^($java8pattern|$java9pattern)$ ]]; then
        return 0
    else
        return 1
    fi

 
 
 
# determine which JVM to use
############################################
 
# default Apple JRE plugin path (< 1.6)
apple_jre_plugin="/Library/Java/Home/bin/java"
apple_jre_version=$(get_java_version_from_cmd "$apple_jre_plugin")
# default Oracle JRE plugin path (>= 1.7)
oracle_jre_plugin="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java"
oracle_jre_version=$(get_java_version_from_cmd "$oracle_jre_plugin")
 
 
# first check system variable "$JAVA_HOME" -> has precedence over any other System JVM
stub_logger '[JavaSearch] Checking for $JAVA_HOME ...'
if [ -n "$JAVA_HOME" ] ; then
    stub_logger "[JavaSearch] ... found JAVA_HOME with value $JAVA_HOME"
 
    # PR 26: Allow specifying "$JAVA_HOME" relative to "$AppPackageFolder"
    # which allows for bundling a custom version of Java inside your app!
    if [[ $JAVA_HOME == /* ]] ; then
        # if "$JAVA_HOME" starts with a Slash it's an absolute path
        JAVACMD="$JAVA_HOME/bin/java"
    else
        # otherwise it's a relative path to "$AppPackageFolder"
        JAVACMD="$AppPackageFolder/$JAVA_HOME/bin/java"
    fi
    JAVACMD_version=$(get_comparable_java_version $(get_java_version_from_cmd "$JAVACMD"))
else
    stub_logger "[JavaSearch] ... didn't found JAVA_HOME"
fi
 
 
# check for any other or a specific Java version
# also if $JAVA_HOME exists but isn't executable
if [ -z "$JAVACMD" ] || [ ! -x "$JAVACMD" ] ; then
    stub_logger "[JavaSearch] Checking for JavaVirtualMachines on the system ..."
    # reset variables
    JAVACMD=""
    JAVACMD_version=""
 
    # first check whether JVMVersion string is a valid requirement string
    if [ ! -z "$JVMVersion" ] && ! is_valid_requirement_pattern $JVMVersion ; then
        MSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf "$MSG_JVMVERSION_REQ_INVALID" "$JVMVersion")
        # log exit cause
        stub_logger "[EXIT 4] $MSG_JVMVERSION_REQ_INVALID_EXPANDED"
        # display error message with AppleScript
        osascript -e "tell application \\"System Events\\" to display dialog \\"$MSG_ERROR_LAUNCHING\\n\\n$MSG_JVMVERSION_REQ_INVALID_EXPANDED\\" with title \\"$CFBundleName\\" buttons \\" OK \\" default button 1$DialogWithIcon"
        # exit with error
        exit 4
    fi
    # then check whether JVMMaxVersion string is a valid requirement string
    if [ ! -z "$JVMMaxVersion" ] && ! is_valid_requirement_pattern $JVMMaxVersion ; then
        MSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf "$MSG_JVMVERSION_REQ_INVALID" "$JVMMaxVersion")
        # log exit cause
        stub_logger "[EXIT 5] $MSG_JVMVERSION_REQ_INVALID_EXPANDED"
        # display error message with AppleScript
        osascript -e "tell application \\"System Events\\" to display dialog \\"$MSG_ERROR_LAUNCHING\\n\\n$MSG_JVMVERSION_REQ_INVALID_EXPANDED\\" with title \\"$CFBundleName\\" buttons \\" OK \\" default button 1$DialogWithIcon"
        # exit with error
        exit 5
    fi
 
 
    # find installed JavaVirtualMachines (JDK + JRE)
    allJVMs=()
    # read JDK's from '/usr/libexec/java_home -V' command
    while read -r line; do
        version=$(echo $line | awk -F $',' 'print $1;')
        path=$(echo $line | awk -F $'" ' 'print $2;')
        path+="/bin/java"
        allJVMs+=("$version:$path")
    done < <(/usr/libexec/java_home -V 2>&1 | grep '^[[:space:]]')
    # unset while loop variables
    unset version path
 
    # add Apple JRE if available
    if [ -x "$apple_jre_plugin" ] ; then
        allJVMs+=("$apple_jre_version:$apple_jre_plugin")
    fi
 
    # add Oracle JRE if available
    if [ -x "$oracle_jre_plugin" ] ; then
        allJVMs+=("$oracle_jre_version:$oracle_jre_plugin")
    fi
 
    # debug output
    for i in "$allJVMs[@]"
    do
        stub_logger "[JavaSearch] ... found JVM: $i"
    done
 
 
    # determine JVMs matching the min/max version requirement
    minC=$(get_comparable_java_version $JVMVersion)
    maxC=$(get_comparable_java_version $JVMMaxVersion)
    matchingJVMs=()
 
    for i in "$allJVMs[@]"
    do
        # split JVM string at ':' delimiter to retain spaces in $path substring
        IFS=: arr=($i) ; unset IFS
        # [0] JVM version number
        ver=$arr[0]
        # comparable JVM version number
        comp=$(get_comparable_java_version $ver)
        # [1] JVM path
        path="$arr[1]"
        # construct string item for adding to the "matchingJVMs" array
        item="$comp:$ver:$path"
 
        # pre-requisite: current version number needs to be greater than min version number
        if [ "$comp" -ge "$minC" ] ; then
 
            # perform max version checks if max version requirement is present
            if [ ! -z $JVMMaxVersion ] ; then
 
                # max version requirement ends with '*' modifier
                if [[ $JVMMaxVersion == *\\* ]] ; then
 
                    # use the '*' modifier from the max version string as wildcard for a 'starts with' comparison
                    # and check whether the current version number starts with the max version wildcard string
                    if [[ $ver == $JVMMaxVersion ]]; then
                        matchingJVMs+=("$item")
 
                    # or whether the current comparable version is lower than the comparable max version
                    elif [ "$comp" -le "$maxC" ] ; then
                        matchingJVMs+=("$item")
                    fi
 
                # max version requirement ends with '+' modifier -> always add this version if it's greater than $min
                # because a max requirement with + modifier doesn't make sense
                elif [[ $JVMMaxVersion == *+ ]] ; then
                    matchingJVMs+=("$item")
 
                # matches 6 zeros at the end of the max version string (e.g. for 1.8, 9)
                # -> then the max version string should be treated like with a '*' modifier at the end
                #elif [[ $maxC =~ ^[0-9]206$ ]] && [ "$comp" -le $(( $maxC#0 + 999 )) ] ; then
                #    matchingJVMs+=("$item")
 
                # matches 3 zeros at the end of the max version string (e.g. for 9.1, 10.3)
                # -> then the max version string should be treated like with a '*' modifier at the end
                #elif [[ $maxC =~ ^[0-9]503$ ]] && [ "$comp" -le "$maxC" ] ; then
                #    matchingJVMs+=("$item")
 
                # matches standard requirements without modifier
                elif [ "$comp" -le "$maxC" ]; then
                    matchingJVMs+=("$item")
                fi
 
            # no max version requirement:
 
            # min version requirement ends with '+' modifier
            # -> always add the current version because it's greater than $min
            elif [[ $JVMVersion == *+ ]] ; then
                matchingJVMs+=("$item")
 
            # min version requirement ends with '*' modifier
            # -> use the '*' modifier from the min version string as wildcard for a 'starts with' comparison
            #    and check whether the current version number starts with the min version wildcard string
            elif [[ $JVMVersion == *\\* ]] ; then
                if [[ $ver == $JVMVersion ]] ; then
                    matchingJVMs+=("$item")
                fi
 
            # compare the min version against the current version with an additional * wildcard for a 'starts with' comparison
            # -> e.g. add 1.8.0_44 when the requirement is 1.8
            elif [[ $ver == $JVMVersion* ]] ; then
                    matchingJVMs+=("$item")
            fi
        fi
    done
    # unset for loop variables
    unset arr ver comp path item
 
    # debug output
    for i in "$matchingJVMs[@]"
    do
        stub_logger "[JavaSearch] ... ... matches all requirements: $i"
    done
 
 
    # sort the matching JavaVirtualMachines by version number
    # https://stackoverflow.com/a/11789688/1128689
    IFS=$'\\n' matchingJVMs=($(sort -nr <<<"$matchingJVMs[*]"))
    unset IFS
 
 
    # get the highest matching JVM
    for ((i = 0; i < $#matchingJVMs[@]; i++));
    do
        # split JVM string at ':' delimiter to retain spaces in $path substring
        IFS=: arr=($matchingJVMs[$i]) ; unset IFS
        # [0] comparable JVM version number
        comp=$arr[0]
        # [1] JVM version number
        ver=$arr[1]
        # [2] JVM path
        path="$arr[2]"
 
        # use current value as JAVACMD if it's executable
        if [ -x "$path" ] ; then
            JAVACMD="$path"
            JAVACMD_version=$comp
            break
        fi
    done
    # unset for loop variables
    unset arr comp ver path
fi
 
# log the Java Command and the extracted version number
stub_logger "[JavaCommand] '$JAVACMD'"
stub_logger "[JavaVersion] $(get_java_version_from_cmd "$JAVACMD")$JAVACMD_version:+ / $JAVACMD_version"
 
 
 
if [ -z "$JAVACMD" ] || [ ! -x "$JAVACMD" ] ; then
 
    # different error messages when a specific JVM was required
    if [ ! -z "$JVMVersion" ] ; then
        # display human readable java version (#28)
        java_version_hr=$(echo $JVMVersion | sed -E 's/^1\\.([0-9+*]+)$/ \\1/g' | sed "s/+/ $MSG_JAVA_VERSION_OR_LATER/;s/*/ $MSG_JAVA_VERSION_LATEST/")
        MSG_NO_SUITABLE_JAVA_EXPANDED=$(printf "$MSG_NO_SUITABLE_JAVA" "$java_version_hr").
 
        if [ ! -z "$JVMMaxVersion" ] ; then
            java_version_hr=$(extract_java_major_version $JVMVersion)
            java_version_max_hr=$(echo $JVMMaxVersion | sed -E 's/^1\\.([0-9+*]+)$/ \\1/g' | sed "s/+//;s/*/ $MSG_JAVA_VERSION_LATEST/")
            MSG_NO_SUITABLE_JAVA_EXPANDED="$(printf "$MSG_NO_SUITABLE_JAVA" "$java_version_hr") $(printf "$MSG_JAVA_VERSION_MAX" "$java_version_max_hr")"
        fi
 
        # log exit cause
        stub_logger "[EXIT 3] $MSG_NO_SUITABLE_JAVA_EXPANDED"
 
        # display error message with AppleScript
        osascript -e "tell application \\"System Events\\" to display dialog \\"$MSG_ERROR_LAUNCHING\\n\\n$MSG_NO_SUITABLE_JAVA_EXPANDED\\n$MSG_NO_SUITABLE_JAVA_CHECK\\" with title \\"$CFBundleName\\"  buttons \\" OK \\", \\"$MSG_VISIT_JAVA_DOT_COM\\", \\"$MSG_VISIT_ADOPTOPENJDK\\" default button 1$DialogWithIcon" \\
                -e "set response to button returned of the result" \\
                -e "if response is \\"$MSG_VISIT_JAVA_DOT_COM\\" then open location \\"https://www.java.com/download/\\"" \\
                -e "if response is \\"$MSG_VISIT_ADOPTOPENJDK\\" then open location \\"https://adoptopenjdk.net/releases.html\\""
        # exit with error
        exit 3
 
    else
        # log exit cause
        stub_logger "[EXIT 1] $MSG_ERROR_LAUNCHING"
        # display error message with AppleScript
        osascript -e "tell application \\"System Events\\" to display dialog \\"$MSG_ERROR_LAUNCHING\\n\\n$MSG_INSTALL_JAVA\\" with title \\"$CFBundleName\\" buttons \\"$MSG_LATER\\", \\"$MSG_VISIT_JAVA_DOT_COM\\", \\"$MSG_VISIT_ADOPTOPENJDK\\" default button 1$DialogWithIcon" \\
                    -e "set response to button returned of the result" \\
                    -e "if response is \\"$MSG_VISIT_JAVA_DOT_COM\\" then open location \\"https://www.java.com/download/\\"" \\
                    -e "if response is \\"$MSG_VISIT_ADOPTOPENJDK\\" then open location \\"https://adoptopenjdk.net/releases.html\\""
        # exit with error
        exit 1
    fi
fi
 
 
 
# MainClass check
############################################
 
if [ -z "$JVMMainClass" ]; then
    # log exit cause
    stub_logger "[EXIT 2] $MSG_MISSING_MAINCLASS"
    # display error message with AppleScript
    osascript -e "tell application \\"System Events\\" to display dialog \\"$MSG_ERROR_LAUNCHING\\n\\n$MSG_MISSING_MAINCLASS\\" with title \\"$CFBundleName\\" buttons \\" OK \\" default button 1$DialogWithIcon"
    # exit with error
    exit 2
fi
 
 
 
# execute $JAVACMD and do some preparation
############################################
 
# enable drag&drop to the dock icon
export CFProcessPath="$0"
 
# remove Apples ProcessSerialNumber from passthru arguments (#39)
if [[ "$*" == -psn* ]] ; then
    ArgsPassthru=()
else
    ArgsPassthru=("$@")
fi
 
# change to Working Directory based upon Apple/Oracle Plist info
cd "$WorkingDirectory" || exit 13
stub_logger "[WorkingDirectory] $WorkingDirectory"
 
# execute Java and set
# - classpath
# - splash image
# - dock icon
# - app name
# - JVM options / properties (-D)
# - JVM default options (-X)
# - main class
# - main class arguments
# - passthrough arguments from Terminal or Drag'n'Drop to Finder icon
stub_logger "[Exec] \\"$JAVACMD\\" -cp \\"$JVMClassPath\\" -splash:\\"$ResourcesFolder/$JVMSplashFile\\" -Xdock:icon=\\"$ResourcesFolder/$CFBundleIconFile\\" -Xdock:name=\\"$CFBundleName\\" $JVMOptionsArr:+$(printf "'%s' " "$JVMOptionsArr[@]") $JVMDefaultOptions:+$JVMDefaultOptions $JVMMainClass$MainArgsArr:+ $(printf "'%s' " "$MainArgsArr[@]")$ArgsPassthru:+ $(printf "'%s' " "$ArgsPassthru[@]")"
exec "$JAVACMD" \\
        -cp "$JVMClassPath" \\
        -splash:"$ResourcesFolder/$JVMSplashFile" \\
        -Xdock:icon="$ResourcesFolder/$CFBundleIconFile" \\
        -Xdock:name="$CFBundleName" \\
        $JVMOptionsArr:+"$JVMOptionsArr[@]" \\
        $JVMDefaultOptions:+$JVMDefaultOptions \\
        "$JVMMainClass"\\
        $MainArgsArr:+ "$MainArgsArr[@]"\\
        $ArgsPassthru:+ "$ArgsPassthru[@]"

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