Hello,
the following scripts works well in jruby-complete-1.7.3.jar, but after change to 1.7.27, it raise the following error:
Caused by : (NameError) cannot link Java class hc.server.util.scheduler (java.lang.NoClassDefFoundError: hc/server/util/scheduler (wrong name: hc/server/util/Scheduler))
org.jruby.javasupport.JavaUtilities.get_proxy_or_package_under_package(org/jruby/javasupport/JavaUtilities.java:54)
RUBY.method_missing(file:/Users/homecenter/Documents/eclipse_workspace/homecenter/jruby.jar!/jruby/java/java_package_module_template.rb:14)
RUBY.(root)(<script>:26)
------------------scripts------------------
#encoding:utf-8

import Java::hc.server.util.Assistant
import Java::hc.server.ui.ProjectContext
import Java::hc.server.util.json.JSONObject

ctx = ProjectContext::getProjectContext()
puts "step1"
scheduler = ctx.getScheduler("MyScheduler1")# Important Java Class : hc.server.util.Scheduler
puts "step2"
scheduler.start()
puts "step3"

hasTrigger = scheduler.hasTrigger("Trigger1")
if hasTrigger == false
puts "add job, calendar, trigger..."
scheduler.addJob("job1", "puts "exeute job1"")
scheduler.addCronTrigger("Trigger1", "/30 * * * * ?", nil, "job1")#trigger "job1" when "Calendar1" every 30 seconds and exclude sunday
scheduler.addCronTrigger("Trigger1", "/30 * * * * ?", nil, "job1")#trigger "job1" when "Calendar1" every 30 seconds and exclude sunday
#puts "Trigger1 next fire time : " + scheduler.getTriggerNextFireTime("Trigger1").toString()
#scheduler.triggerJob("job1")
else
#puts "Trigger1 end time : " + scheduler.getTriggerNextFireTime("Trigger1").toString()
end

weeklyCalendar = Java::hc.server.util.scheduler.WeeklyJobCalendar::new()
------------------end scripts------------------

1. the instance var "scheduler" is class hc.server.util.Scheduler
2. the instance var "weeklyCalendar" is class hc.server.util.scheduler.WeeklyJobCalendar
3. all other scripts works well.

Environment

jruby-complete-1.7.27.jar in jdk1.7.0_51
Darwin Home-CentermatoMacBook-2.local 15.6.0 Darwin Kernel Version 15.6.0: Mon Oct 2 22:20:08 PDT 2017; root:xnu-3248.71.4~1/RELEASE_X86_64 x86_64