I've been doing some serious yak shaving. Instead of solving Go problems to improve my game I've been writing a SGF viewer to make it easier to go through my problem files.
As a side result of the viewer I have also implemented a SGF Parser for Java.
The app is meant for me to go over a large number of SGF problems in a quick manner. I wasn't able to find a tool out there that would let you load SGFs without navigating some File explorer or similar.
I haven't packaged the program into a executable. If you want to take it for a spin then clone the repository, issue a mvn install and run the JAR file java -jar sgf4j-gui.jar