I've been mucking around with various different versions of the JDK lately, and have come across this problem from time to time:
Warning: Cannot convert string "-monotype-arial-regular-r-normal--\*-140-\*-\*-p-\*-iso8859-1" to type FontStruct
Warning: Unable to load any usable ISO8859-1 font
Conversion failed. Cannot load font.
In the past I've used a combination of AWTTOOLKIT=Motif
environment settings in order to wiggle around it.
Today, however, neither of those vars helped.
What did help was this troubleshooting link
from the Uni of Delaware. It contains this piece of information: add your remote display's font server
to your X session's font path:
$ xset fp+ tcp/doppio:7100
and there you have it.
Now why on earth could I not find this in a sunsolve search?