org.jruby.exceptions
Exceptions 
ArgumentError
BreakJump
EOFError
ErrnoError
FrozenError
IndexError
IOError
JumpException
LoadError
NameError
NextJump
NoMethodError
NotImplementedError
RaiseException
RangeError
RedoJump
RegexpError
RetryJump
ReturnJump
SecurityError
SystemCallError
SystemExit
ThreadError
ThrowJump
TypeError