14 files changed, 51 insertions, 359 deletions
diff --git a/build/cmake/DefineOptions.cmake b/build/cmake/DefineOptions.cmake
index 3cca31ec3..b59292cd3 100644
--- a/build/cmake/DefineOptions.cmake
+++ b/build/cmake/DefineOptions.cmake
@@ -99,10 +99,10 @@ if(ANDROID)
     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 @@ if(ANDROID)
     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 17bb99899..000000000
--- 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 0e11d2ac6..e69df5ab3 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -149,12 +149,19 @@ RUN apt-get install -y --no-install-recommends \
     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 45bef96d6..4f1de2d9d 100644
--- a/build/docker/ubuntu-disco/Dockerfile
+++ b/build/docker/ubuntu-disco/Dockerfile
@@ -148,12 +148,19 @@ RUN apt-get install -y --no-install-recommends \
     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 1428fac00..7f856ff4b 100644
--- a/build/docker/ubuntu-xenial/Dockerfile
+++ b/build/docker/ubuntu-xenial/Dockerfile
@@ -155,12 +155,20 @@ RUN apt-get install -y --no-install-recommends \
     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 5181f60ad..4656fbb10 100755
--- a/configure.ac
+++ b/configure.ac
@@ -195,11 +195,12 @@ AX_THRIFT_LIB(java, [Java], yes)
 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$GRADLE" != "x" ; then
     have_java="yes"
   fi
 fi
@@ -921,10 +922,10 @@ fi
 if test "$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 d0de50872..ba886faae 100755
--- a/debian/rules
+++ b/debian/rules
@@ -73,7 +73,7 @@ build-indep-stamp: configure-stamp $(CURDIR)/compiler/cpp/thrift
 
 	# Java
 	cd $(CURDIR)/lib/java && \
-		./gradlew --no-daemon -Prelease=true jar
+		gradle --no-daemon -Prelease=true jar
 
 	# C#
 	$(MAKE) -C $(CURDIR)/lib/netstd
diff --git a/lib/java/CMakeLists.txt b/lib/java/CMakeLists.txt
index b9bfc8175..1fb557eec 100644
--- a/lib/java/CMakeLists.txt
+++ b/lib/java/CMakeLists.txt
@@ -51,8 +51,8 @@ else()
     file(GLOB_RECURSE THRIFTJAVA_SOURCES LIST_DIRECTORIES false
         "${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 @@ else()
     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 @@ else()
 
     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 65981ca68..5f9768010 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 @@ install-exec-hook:
 		--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 @@ EXTRA_DIST = \
 	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 c8ec1c37c..f18f7dd61 100644
--- a/lib/java/README.md
+++ b/lib/java/README.md
@@ -44,7 +44,7 @@ developers.
 
 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 @@ that.
 
 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 @@ classpath, or install if in your default system classpath of choice.
 
 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 @@ under the location build/reports/clover/clover.pdf.
 
 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 @@ It is also possible to manually publish using the Gradle build directly.
 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 @@ company internal server if you add this to the command line or in the
 
 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 @@ changed to remove the boolean return type and instead rely on Exceptions.
 
 * 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 5c2d1cf01..000000000
--- a/lib/java/gradle/wrapper/gradle-wrapper.jar
+++ /dev/null
diff --git a/lib/java/gradle/wrapper/gradle-wrapper.properties b/lib/java/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index ec991f9aa..000000000
--- 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 83f2acfdc..000000000
--- 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 9618d8d96..000000000
--- 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