How to install Oracle Java 7 (7u79) on Ubuntu

   Java is the foundation for virtually every type of networked application and is the global standard for developing and delivering mobile applications, games, Web-based content, and enterprise software. Currently there are no .deb packages available for Oracle Java 7

Java 7 Update 79 (7u79)  Changelog

• ANA Data 2015a

       JDK 7u79 contains IANA time zone data version 2015a. For more information, refer to Timezone Data Versions in the JRE Software.

• Bug Fix: Improve jar file handling. Starting with JDK 7u79 release, the jar tool no longer allows the leading slash "/" and ".." (dot-dot) path component in zip entry file name when creating new and/or extracting from zip and jar file. If needed, the new command line option "-P" should be used explicitly to preserve the dot-dot and/or absolute path component. See 8064601 (not public). 

Installation instructions:

Open terminal from Unity Dash, App Launcher, or via Ctrl+Alt+T keys. When it opens, run below commands one by one:
 

$ sudo apt-get purge openjdk* $ sudo add-apt-repository ppa:webupd8team/java $ sudo apt-get update $ sudo apt-get install oracle-java7-installer

To set Oracle Java 7 by default, do:

$ sudo apt-get install oracle-java7-set-default

 
Check Installed Version
  

java -version