if [ "$JAVA_VER" -ge 110 -a "$JAVAC_VER" -ge 110 ];then
echo "ok, java is 11 or newer"
else
if [ "$JAVA_VER" -ge 110 -a "$JAVAC_VER" -ge 110 ];then
echo "ok, java is 11 or newer"
else
echo "install java 11"
sudo yum install -y java-11-openjdk java-11-openjdk-devel
last_installed_jdk11=$(ls -tr1 /usr/lib/jvm/ | grep java-11-openjdk-11 | tail -1)
echo "install java 11"
sudo yum install -y java-11-openjdk java-11-openjdk-devel
last_installed_jdk11=$(ls -tr1 /usr/lib/jvm/ | grep java-11-openjdk-11 | tail -1)