Problem with JRE when uninstalling on Ubuntu

Problem with JRE when uninstalling on Ubuntu

Hello!
After succeful installation and use I can't uninstall  NetFlow Analyzer.

  1. root@7th-server:/opt/ManageEngine/OpManager/_uninst# ./uninstaller.bin







  2.           Initializing MultiPlatform Application Launcher........
  3.           Searching JVM........







  4.           This application requires a Java Run Time Environment (JRE)
  5.           to run. Searching for one on your computer was not successful.
  6.           Please use the command line switch -is:javahome to specify
  7.           a valid JRE.  For more help use the option -is:help.

What can I do with it? Where is javahome?

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