JOC installer should set Jetty's environment variable JAVA properly

Current Situation

• The JOC installer writes one of the following files to set some environment variables such as JAVA which are read by Jetty.
  • /etc/default/joc (if installer has root permissions)
  • /$HOME/.jocrc (if installer doesn't have root permissions)

• If Jetty doesn't find a Java environment then the variable JAVA is used as fallback.
  This variable is set by the installer with the Java which is used during the setup but a typo ('}') prevents this variable from being used
  example of current situation

  test -x "/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.77-0.b03.el7_2.x86_64/jre}/bin/java" && JAVA="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.77-0.b03.el7_2.x86_64/jre/bin/java"
  

Desired Behavior

The typo ('}') should correct so that JAVA can be used as fallback.