open terminal and execute commands
cd /Applications/
rm -rf IntelliJ\ IDEA\ *.app/
rm -rf /Users/${user}/Library/Logs/IntelliJIdea*/
rm -rf /Users/${user}/Library/Preferences/IntelliJIdea*/
rm -rf /Users/${user}/Library/Application\ Support/IntelliJIdea*/
rm -rf /Users/${user}/Library/Caches/IntelliJIdea*/
来源:CSDN
作者:rookieniche
链接:https://blog.csdn.net/rookieniche/article/details/103746212