ExtraView 11.1 requires Java JRE 8. If your system is on an earlier version of Java, you must upgrade to the required version.
The following steps will install Java into the directory $BASE/1.8.0_xx
cd $INSTALL
cp jre-8uxx-linux-x64.gz $BASE
cd $BASE
tar xzf jre-8uxx-linux-x64.gz
Java is now installed in the directory $BASE/jre1.8.0_xx
