You want to install software from testing on stable but stable should be the default.
This can be done by creating a file anc dropping it in /etc/apt/apt.conf.d/
e.g. I made a file calles 10debconfwim with the contents:
Now you can install software from testing with:
apt-get install -t unstable packagename
The Java EE 5 Application Server Glassfish is only in testing. This J2EE environment can be installed on stable with the command:
apt-get install -t unstable glassfish-appserv
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.