Add license header to new file.

Author: PhilippWendler

java/check-format.sh

@@ -1,4 +1,12 @@
 #!/bin/bash
+
+# This file is part of the SV-Benchmarks collection of verification tasks:
+# https://github.com/sosy-lab/sv-benchmarks
+#
+# SPDX-FileCopyrightText: 2011-2020 The SV-Benchmarks community
+#
+# SPDX-License-Identifier: Apache-2.0
+
 set -eu
 shopt -s globstar