Im still learning about compileing java programs but i did make some custom maps and i found the save with 2 million of every resource.
(here's my map it dosn't look that good yet)
Nice! I should really add a level importer sometime soon
If you want to start with every resource (and some other debug features), you can run the .JAR file through the command-line with
java -jar desktop-1.0.jar -debug
to enable debugging. There's a bunch of random keys mapped to things like spawning a wave, but it's not documented anywhere.