gedit software package provides official text editor of the GNOME desktop environment, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gedit
gedit is installed in your system.
Make ensure the gedit package were installed using the commands given below,
$ sudo dpkg-query -l | grep gedit *
You will get with gedit package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | GNOME |
| Package | gedit |
| Version | 3.14.0-3 |
| Description | official text editor of the GNOME desktop environment |
| Sub Section | GNOME |