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#!/bin/bash
# Check the version of java pointed to by JAVA_HOME in version 11.
set -e
if [[ -z "${JAVA_HOME}" ]]; then
echo "JAVA_HOME must be set"
exit 1
fi
echo "JAVA_HOME is set to: $JAVA_HOME"
if [ ! -f "$JAVA_HOME/bin/java" ]; then
echo "JAVA_HOME does not point to an installation of Java"
exit 1
fi
java_version=$("$JAVA_HOME/bin/java" -version 2>&1 | sed -n ';s/.* version "\(.*\)\.\(.*\)\..*".*/\1/p;')
echo "JAVA_HOME version is: $java_version"
if [ "$java_version" -ne 11 ]; then
echo "JAVA_HOME must be set to a JDK version 11"
exit 1
fi
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