I have followed below given steps but still i am not able to find spark on my system…
Checking JAVA Version
$ java -version
java version “1.7.0_95”
OpenJDK Runtime Environment (IcedTea 2.6.4) (7u95-2.6.4-0ubuntu0.15.10.1)
OpenJDK 64-Bit Server VM (build 24.95-b01, mixed mode)
Download Spark Archive file
$ sudo wget http://download.igniterealtime.org/spark/spark_2_7_5.tar.gz
Extract Spark Archive file
$ sudo tar -zxvf spark_2_7_5.tar.gz
Download Spark Icon
$ sudo wget https://dl.dropbox.com/u/50880014/spark.png
Prerequiest library
$ sudo apt-get install libxtst6:i386 libxi6:i386
$ sudo nano /usr/share/applications/spark.desktop
[Desktop Entry]
Name=Spark
Version=2.7.5
GenericName=Spark
X-GNOME-FullName=Spark
Comment=ignite realtime Spark IM client
Type=Application
Categories=Application;Utility;
Path=/opt/Spark
Exec=/opt/Spark/Spark
Terminal=false
StartupNotify=true
Icon=/opt/Spark/spark.png
TargetEnvironment=Unity