# apt-get install java6-runtime-headless
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package java6-runtime-headless is a virtual package provided by:
  openjdk-7-jre-headless 7~b147-2.0~pre6-1ubuntu1
  openjdk-6-jre-headless 6b23~pre10-0ubuntu5
  default-jre-headless 1:1.6-42ubuntu2
You should explicitly select one to install.

E: Package 'java6-runtime-headless' has no installation candidate
root@airvision:/home/jluthman# apt-get install default-jre-headless
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 airvision : Depends: jsvc (>= 1.0.4) but it is not going to be installed
 default-jre-headless : Depends: openjdk-6-jre-headless (>= 6b14) but it is not going to be installed
                        Depends: java-common but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).