jtreg software package provides Regression Test Harness for the OpenJDK platform, 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 jtreg
jtreg is installed in your system.
Make ensure the jtreg package were installed using the commands given below,
$ sudo dpkg-query -l | grep jtreg *
You will get with jtreg package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Java |
| Package | jtreg |
| Version | 4.1-b09-1 |
| Description | Regression Test Harness for the OpenJDK platform |
| Sub Section | Java |