refactor: empty JScrollBar thumb debug
refactor: empty JScrollBar thumb debug
mhcrnl/java-swing-tips,aoguren/java-swing-tips,aterai/java-swing-tips,aterai/java-swing-tips,mhcrnl/java-swing-tips,aterai/java-swing-tips,aoguren/java-swing-tips,mhcrnl/java-swing-tips,aoguren/java-swing-tips,aterai/java-swing-tips