add flatbuffers

commit 6da1cf79d90eb242e7da5318241d42279a3df3ba
Author: Max Burke <max@urbanlogiq.com>
Date:   Sun Jan 19 14:47:28 2020 -0800

    [rust] Add use declarations to Rust-generated bindings for imported FB definitions (#5645)

    * Bugfix for Rust generation of union fields named with language keywords

flatbuffers/tests/JavaTest.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# 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
+#
+#     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.
+
+set -o errexit
+
+echo Compile then run the Java test.
+
+java -version
+
+testdir=$(dirname $0)
+
+targetdir="${testdir}/target"
+
+if [[ -e "${targetdir}" ]]; then
+    echo "cleaning target"
+    rm -rf "${targetdir}"
+fi
+
+mkdir -v "${targetdir}"
+
+if ! find "${testdir}/../java" -type f -name "*.class" -delete; then
+    echo "failed to clean .class files from java directory" >&2
+    exit 1
+fi
+
+javac -d "${targetdir}" -classpath "${testdir}/../java:${testdir}:${testdir}/namespace_test:${testdir}/union_vector" "${testdir}/JavaTest.java"
+
+(cd "${testdir}" && java -classpath "${targetdir}" JavaTest )
+
+rm -rf "${targetdir}"