ExtraView 9 requires Java JRE 7. 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/1.7.0_67
cd $INSTALL
cp jre-7u67-linux-x64.gz $BASE
cd $BASE
tar xzf jre-7u67-linux-x64.gz
Java is now installed in the directory $BASE/jre1.7.0_67