E: Unable to locate package oracle-java7-installer

[Vivek K]

vivek@Devoloper-Machine:~$ sudo apt-get install oracle-java7-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package oracle-java7-installer
vivek@Devoloper-Machine:~$

Always the error message arises whenever i try to install a new software.I have also tried changing the server but still the same error arises.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-terminal 2.32.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Tue Apr 14 20:13:37 2015
ExecutablePath: /usr/bin/gnome-terminal
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_IN:en
 LANG=en_IN
 LC_MESSAGES=en_IN.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

[John Samuel (johnsamuel)]

This is not a gnome-terminal error. oracle-java7-installer is not present under the list of default supported packages. Hence the error is expected.