Created for an educational purpose, feell free to use any code.
Precompiled jars:
Chat-Client: https://mega.nz/file/DihHQDhb#xNbT5btiY42gMJVv-4GJs8jVmdfj-aWsKZ4zsVLb_gM
Chat-Server: https://mega.nz/file/7uhTjRRQ#zZqE2FOlwHrOn9tCaYsoPpzSeMMRFVOJfg_bXXx84uw
Server has to be started first.