THRIFT-5562: remove gradle wrapper and use installed gradle 6.9
Client: java
Patch: Jiayu Liu

This closes #2576
diff --git a/build/cmake/DefineOptions.cmake b/build/cmake/DefineOptions.cmake
index 3cca31e..b59292c 100644
--- a/build/cmake/DefineOptions.cmake
+++ b/build/cmake/DefineOptions.cmake
@@ -99,10 +99,10 @@
     CMAKE_DEPENDENT_OPTION(BUILD_JAVA "Build Java library" ON
                            "BUILD_LIBRARIES;WITH_JAVA;GRADLE_FOUND" OFF)
 else()
-    find_package(Gradlew QUIET)
+    find_package(Gradle QUIET)
     find_package(Java QUIET)
     CMAKE_DEPENDENT_OPTION(BUILD_JAVA "Build Java library" ON
-                           "BUILD_LIBRARIES;WITH_JAVA;JAVA_FOUND;GRADLEW_FOUND" OFF)
+                           "BUILD_LIBRARIES;WITH_JAVA;JAVA_FOUND;GRADLE_FOUND" OFF)
 endif()
 
 # Javascript
@@ -197,7 +197,7 @@
     MESSAGE_DEP(GRADLE_FOUND "Gradle missing")
 else()
     MESSAGE_DEP(JAVA_FOUND "Java Runtime missing")
-    MESSAGE_DEP(GRADLEW_FOUND "Gradle Wrapper missing")
+    MESSAGE_DEP(GRADLE_FOUND "Gradle missing")
 endif()
 message(STATUS "  Build Javascript library:                   ${BUILD_JAVASCRIPT}")
 MESSAGE_DEP(WITH_JAVASCRIPT "Disabled by WITH_JAVASCRIPT=OFF")
diff --git a/build/cmake/FindGradlew.cmake b/build/cmake/FindGradlew.cmake
deleted file mode 100644
index 17bb998..0000000
--- a/build/cmake/FindGradlew.cmake
+++ /dev/null
@@ -1,36 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-
-
-#  GRADLEW_FOUND - system has Gradlew
-#  GRADLEW_EXECUTABLE - the Gradlew executable
-#
-# It will search the location CMAKE_SOURCE_DIR/lib/java
-
-include(FindPackageHandleStandardArgs)
-
-find_program(GRADLEW_EXECUTABLE gradlew PATHS ${CMAKE_SOURCE_DIR}/lib/java NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
-find_package_handle_standard_args(Gradlew DEFAULT_MSG GRADLEW_EXECUTABLE)
-mark_as_advanced(GRADLEW_EXECUTABLE)
-
-# Buggy find_program cannot find gradlew.bat when gradlew is at the same path
-# and even buggier ctest will not execute gradlew.bat when gradlew is given.
-if(CMAKE_HOST_WIN32)
-    string(REGEX REPLACE "(.+gradlew)$" "\\1.bat" GRADLEW_EXECUTABLE ${GRADLEW_EXECUTABLE})
-endif(CMAKE_HOST_WIN32)
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index 0e11d2a..e69df5a 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -149,12 +149,19 @@
     haxelib setup --always /usr/share/haxe/lib && \
     haxelib install --always hxcpp 2>&1 > /dev/null
 
+ENV GRADLE_VERSION="6.9.2"
 RUN apt-get install -y --no-install-recommends \
 `# Java dependencies` \
       ant \
       ant-optional \
       maven \
-      openjdk-11-jdk-headless
+      openjdk-11-jdk-headless && \
+`# Gradle` \
+      wget https://services.gradle.org/distributions/gradle-$GRADLE_VERSION-bin.zip -q -O /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      (echo "8b356fd8702d5ffa2e066ed0be45a023a779bba4dd1a68fd11bc2a6bdc981e8f  /tmp/gradle-$GRADLE_VERSION-bin.zip" | sha256sum -c -) && \
+      unzip -d /tmp /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      mv /tmp/gradle-$GRADLE_VERSION /usr/local/gradle && \
+      ln -s /usr/local/gradle/bin/gradle /usr/local/bin
 
 RUN apt-get install -y --no-install-recommends \
 `# Lua dependencies` \
diff --git a/build/docker/ubuntu-disco/Dockerfile b/build/docker/ubuntu-disco/Dockerfile
index 45bef96..4f1de2d 100644
--- a/build/docker/ubuntu-disco/Dockerfile
+++ b/build/docker/ubuntu-disco/Dockerfile
@@ -148,12 +148,19 @@
     haxelib setup --always /usr/share/haxe/lib && \
     haxelib install --always hxcpp 2>&1 > /dev/null
 
+ENV GRADLE_VERSION="6.9.2"
 RUN apt-get install -y --no-install-recommends \
 `# Java dependencies` \
       ant \
       ant-optional \
       maven \
-      openjdk-11-jdk-headless
+      openjdk-11-jdk-headless && \
+`# Gradle` \
+      wget https://services.gradle.org/distributions/gradle-$GRADLE_VERSION-bin.zip -q -O /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      (echo "8b356fd8702d5ffa2e066ed0be45a023a779bba4dd1a68fd11bc2a6bdc981e8f  /tmp/gradle-$GRADLE_VERSION-bin.zip" | sha256sum -c -) && \
+      unzip -d /tmp /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      mv /tmp/gradle-$GRADLE_VERSION /usr/local/gradle && \
+      ln -s /usr/local/gradle/bin/gradle /usr/local/bin
 
 RUN apt-get install -y --no-install-recommends \
 `# Lua dependencies` \
diff --git a/build/docker/ubuntu-xenial/Dockerfile b/build/docker/ubuntu-xenial/Dockerfile
index 1428fac..7f856ff 100644
--- a/build/docker/ubuntu-xenial/Dockerfile
+++ b/build/docker/ubuntu-xenial/Dockerfile
@@ -155,12 +155,20 @@
     haxelib install --always hxcpp 3.4.64 2>&1 > /dev/null
 # note: hxcpp 3.4.185 (latest) no longer ships static libraries, and caused a build failure
 
+ENV GRADLE_VERSION="6.9.2"
 RUN apt-get install -y --no-install-recommends \
 `# Java dependencies` \
       ant \
       ant-optional \
       openjdk-8-jdk \
-      maven
+      maven \
+      unzip && \
+`# Gradle` \
+      wget https://services.gradle.org/distributions/gradle-$GRADLE_VERSION-bin.zip -q -O /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      (echo "8b356fd8702d5ffa2e066ed0be45a023a779bba4dd1a68fd11bc2a6bdc981e8f  /tmp/gradle-$GRADLE_VERSION-bin.zip" | sha256sum -c -) && \
+      unzip -d /tmp /tmp/gradle-$GRADLE_VERSION-bin.zip && \
+      mv /tmp/gradle-$GRADLE_VERSION /usr/local/gradle && \
+      ln -s /usr/local/gradle/bin/gradle /usr/local/bin
 
 # disabled: same as ubuntu-bionic jobs
 # RUN apt-get install -y --no-install-recommends \
diff --git a/configure.ac b/configure.ac
index 5181f60..4656fbb 100755
--- a/configure.ac
+++ b/configure.ac
@@ -195,11 +195,12 @@
 if test "$with_java" = "yes";  then
   AX_JAVAC_AND_JAVA
   AC_PATH_PROG([ANT], [ant])
+  AC_PATH_PROG([GRADLE], [gradle])
   AX_CHECK_ANT_VERSION($ANT, 1.7)
   AC_SUBST(CLASSPATH)
   AC_SUBST(ANT_FLAGS)
   AC_SUBST(GRADLE_OPTS)
-  if test "x$JAVA" != "x" && test "x$JAVAC" != "x" && test "x$ANT" != "x" ; then
+  if test "x$JAVA" != "x" && test "x$JAVAC" != "x" && test "x$ANT" != "x" && test "x$GRADLE" != "x" ; then
     have_java="yes"
   fi
 fi
@@ -921,10 +922,10 @@
 if test "$have_java" = "yes" ; then
   echo
   echo "Java Library:"
-  echo "   Using gradlew ............. : lib/java/gradlew"
+  echo "   Using gradle .............. : $GRADLE"
   echo "   Using java ................ : $JAVA"
   echo "   Using javac ............... : $JAVAC"
-  echo "   Using Gradle version ...... : $(lib/java/gradlew --version --quiet | grep Gradle 2>&1)"
+  echo "   Using Gradle version ...... : $($GRADLE --version --quiet | grep Gradle 2>&1)"
   echo "   Using java version ........ : $($JAVA -version 2>&1 | grep 'version ')"
 fi
 if test "$have_lua" = "yes" ; then
diff --git a/debian/rules b/debian/rules
index d0de508..ba886fa 100755
--- a/debian/rules
+++ b/debian/rules
@@ -73,7 +73,7 @@
 
 	# Java
 	cd $(CURDIR)/lib/java && \
-		./gradlew --no-daemon -Prelease=true jar
+		gradle --no-daemon -Prelease=true jar
 
 	# C#
 	$(MAKE) -C $(CURDIR)/lib/netstd
diff --git a/lib/java/CMakeLists.txt b/lib/java/CMakeLists.txt
index b9bfc81..1fb557e 100644
--- a/lib/java/CMakeLists.txt
+++ b/lib/java/CMakeLists.txt
@@ -51,8 +51,8 @@
     file(GLOB_RECURSE THRIFTJAVA_SOURCES LIST_DIRECTORIES false
         "${CMAKE_CURRENT_SOURCE_DIR}/src/*")
     add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/build/libs/libthrift.jar"
-        COMMENT "Building Java library using Gradle Wrapper"
-        COMMAND ${GRADLEW_EXECUTABLE} ${GRADLE_OPTS} assemble
+        COMMENT "Building Java library using Gradle"
+        COMMAND ${GRADLE_EXECUTABLE} ${GRADLE_OPTS} assemble
             --console=plain --no-daemon
             -Prelease=${PRELEASE}
             -Pthrift.version=${thrift_VERSION}
@@ -67,7 +67,7 @@
     add_custom_target(MavenPublish
         COMMENT "Publishing Java Library to Apache Maven staging"
         DEPENDS ThriftJava
-        COMMAND ${GRADLEW_EXECUTABLE} ${GRADLE_OPTS} clean uploadArchives
+        COMMAND ${GRADLE_EXECUTABLE} ${GRADLE_OPTS} clean uploadArchives
             --console=plain --no-daemon
             -Prelease=${PRELEASE}
             -Pthrift.version=${thrift_VERSION}
@@ -89,7 +89,7 @@
 
     if(BUILD_TESTING)
         add_test(NAME JavaTest
-            COMMAND ${GRADLEW_EXECUTABLE} ${GRADLE_OPTS} test
+            COMMAND ${GRADLE_EXECUTABLE} ${GRADLE_OPTS} test
                 --console=plain --no-daemon
                 -Prelease=${PRELEASE}
                 -Pthrift.version=${thrift_VERSION}
diff --git a/lib/java/Makefile.am b/lib/java/Makefile.am
index 65981ca..5f97680 100644
--- a/lib/java/Makefile.am
+++ b/lib/java/Makefile.am
@@ -20,13 +20,13 @@
 export CLASSPATH
 
 all-local:
-	./gradlew $(GRADLE_OPTS) assemble \
+	gradle $(GRADLE_OPTS) assemble \
 		-Prelease=true \
 		-Pthrift.version=$(PACKAGE_VERSION) \
 		--console=plain
 
 install-exec-hook:
-	./gradlew $(GRADLE_OPTS) install \
+	gradle $(GRADLE_OPTS) install \
 		-Prelease=true \
 		-Pinstall.path=$(DESTDIR)$(JAVA_PREFIX) \
 		-Pinstall.javadoc.path=$(DESTDIR)$(docdir)/java \
@@ -34,24 +34,24 @@
 		--console=plain
 
 clean-local:
-	./gradlew $(GRADLE_OPTS) clean --console=plain
+	gradle $(GRADLE_OPTS) clean --console=plain
 
 precross: $(THRIFT)
-	./gradlew $(GRADLE_OPTS) shadowJar \
+	gradle $(GRADLE_OPTS) shadowJar \
 		-Prelease=true \
 		-Pthrift.version=$(PACKAGE_VERSION) \
 		-Pthrift.compiler=$(THRIFT) \
 		--console=plain
 
 check-local: $(THRIFT)
-	./gradlew $(GRADLE_OPTS) test \
+	gradle $(GRADLE_OPTS) test \
 		-Prelease=true \
 		-Pthrift.version=$(PACKAGE_VERSION) \
 		-Pthrift.compiler=$(THRIFT) \
 		--console=plain
 
 maven-publish:
-	./gradlew $(GRADLE_OPTS) uploadArchives \
+	gradle $(GRADLE_OPTS) uploadArchives \
 		-Prelease=true \
 		-Pthrift.version=$(PACKAGE_VERSION) \
 		--console=plain
@@ -61,8 +61,6 @@
 	gradle.properties \
 	settings.gradle \
 	gradle \
-	gradlew \
-	gradlew.bat \
 	CMakeLists.txt \
 	coding_standards.md \
 	android \
diff --git a/lib/java/README.md b/lib/java/README.md
index c8ec1c3..f18f7dd 100644
--- a/lib/java/README.md
+++ b/lib/java/README.md
@@ -44,7 +44,7 @@
 
 To compile the Java Thrift libraries, simply do the following:
 
-    ./gradlew
+    gradle
 
 Yep, that's easy. Look for libthrift-<version>.jar in the build/libs directory.
 
@@ -65,12 +65,12 @@
 
 To just build the library without running unit tests you simply do this.
 
-    ./gradlew assemble
+    gradle assemble
 
 To install the library in the local Maven repository location
 where other Maven or Gradle builds can reference it simply do this.
 
-    ./gradlew install
+    gradle install
 
 The library will be placed in your home directory under .m2/repository
 
@@ -80,7 +80,7 @@
 
 Build Thrift behind a proxy:
 
-    ./gradlew -Dhttp.proxyHost=myproxyhost -Dhttp.proxyPort=8080 -Dhttp.proxyUser=thriftuser -Dhttp.proxyPassword=topsecret
+    gradle -Dhttp.proxyHost=myproxyhost -Dhttp.proxyPort=8080 -Dhttp.proxyUser=thriftuser -Dhttp.proxyPassword=topsecret
 
 or via
 
@@ -107,7 +107,7 @@
 
 The following command will build, unit test, and generate Clover reports:
 
-    ./gradlew -PcloverEnabled=true
+    gradle -PcloverEnabled=true
 
 
 Publishing Maven Artifacts to Maven Central
@@ -146,7 +146,7 @@
 With the key information and credentials in place the following will generate
 if needed the build artifacts and proceed to publish the results.
 
-    ./gradlew -Prelease=true uploadArchives
+    gradle -Prelease=true uploadArchives
 
 It is also possible to override the target repository for the Maven Publication
 by using a Gradle property, for example you can publish signed JAR files to your
@@ -157,7 +157,7 @@
 
 Or the same on the command line:
 
-    ./gradlew -Pmaven-repository-url=https://my.company.com/service/local/staging/deploy/maven2 -Prelease=true -Pthrift.version=0.11.0 uploadArchives
+    gradle -Pmaven-repository-url=https://my.company.com/service/local/staging/deploy/maven2 -Prelease=true -Pthrift.version=0.11.0 uploadArchives
 
 
 Dependencies
@@ -175,7 +175,7 @@
 
 * Per THRIFT-4805, TSaslTransportException has been removed. The same condition
 is now covered by TTansportException, where `TTransportException.getType() == END_OF_FILE`.
- 
+
 ## 0.12.0
 
 The access modifier of the AutoExpandingBuffer class has been changed from
diff --git a/lib/java/gradle/wrapper/gradle-wrapper.jar b/lib/java/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 5c2d1cf..0000000
--- a/lib/java/gradle/wrapper/gradle-wrapper.jar
+++ /dev/null
Binary files differ
diff --git a/lib/java/gradle/wrapper/gradle-wrapper.properties b/lib/java/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index ec991f9..0000000
--- a/lib/java/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.9.2-bin.zip
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
diff --git a/lib/java/gradlew b/lib/java/gradlew
deleted file mode 100755
index 83f2acf..0000000
--- a/lib/java/gradlew
+++ /dev/null
@@ -1,188 +0,0 @@
-#!/usr/bin/env sh
-
-#
-# Copyright 2015 the original author or authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-##############################################################################
-##
-##  Gradle start up script for UN*X
-##
-##############################################################################
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
-
-warn () {
-    echo "$*"
-}
-
-die () {
-    echo
-    echo "$*"
-    echo
-    exit 1
-}
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
-esac
-
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-
-# Determine the Java command to use to start the JVM.
-if [ -n "$JAVA_HOME" ] ; then
-    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
-        # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD="$JAVA_HOME/jre/sh/java"
-    else
-        JAVACMD="$JAVA_HOME/bin/java"
-    fi
-    if [ ! -x "$JAVACMD" ] ; then
-        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-else
-    JAVACMD="java"
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-fi
-
-# Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
-        fi
-        i=$((i+1))
-    done
-    case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
-    esac
-fi
-
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=$(save "$@")
-
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
-
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
-exec "$JAVACMD" "$@"
diff --git a/lib/java/gradlew.bat b/lib/java/gradlew.bat
deleted file mode 100644
index 9618d8d..0000000
--- a/lib/java/gradlew.bat
+++ /dev/null
@@ -1,100 +0,0 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega