Easiest way to install software on Ubuntu without internet connection is to go to another place where you have an internet connection and manually download the needed .deb (for Ubuntu) file(s) to a portable media such as usb memory key, optical disk, harddisk or something similar. Then bring the media to the pc where you want to install the software and simply run (double-click for example) the .deb files; Ubuntu should run gdebi installer (which asks for your password) which then installs the packages. Or you can install them using command line using dpkg
with the -i
option (means 'install'):
sudo dpkg -i package.deb
The downside in this method is that you'll need to (manually) find and download all the depending packages too, if there are any. To find out what they are, download the package you need, try to install it and if it fails, write down the list of missing dependencies; then obtain them too, re-try and repeat until it installs.
apt-cache search anjuta
reveals, among a few other lines, these:
anjuta - A GNOME development IDE, for C/C++
anjuta-common - A GNOME development IDE, for C/C++ - data files
anjuta-dbg - A GNOME development IDE, for C/C++ - debug files
anjuta-dev - A GNOME development IDE, for C/C++ - development files
So you'll need to find those two (four, if you think you need) packages: anjuta, anjuta-common (, anjuta-dbg, anjuta-dev). They should be fairly easy to find using a search engine or just by browsing to the Ubuntu reposity, for example here
(you should use the mirror you normally do, see file /etc/apt/sources.list for example).