does opera support java
John Zukowski. The Opera browser supports Java through a bundled Java Runtime Environment (JRE). It must be version 1.2 or later. See http://www.opera.com/support/instplug.htm#jre for additional information.1  Post a comment. 2  Email Article. 3  Print Article.ohn Zukowski. The Opera browser supports Java through a bundled Java Runtime Environment (JRE). It must be version 1.2 or later. See http://www.opera.com/support/instplug.htm#jre for additional information.