Installing / Uninstalling IntelliJ & important shortcuts

Uninstalling Intellij on a Mac for the most part is no different from uninstalling any application on a Mac you’ll need to go to the Applications directory and and remove the application bundle though there will be some residual files that will need deleting. 

All application installed in directory "/Application", same of intelliJ as "/Application/IntelliJIdeaXX" where XX stands for version for us XX is 14 ("/Application/IntelliJIdea14").

XX : 14

Follow these steps for a complete removal

1. Goto /Application/<ApplicationName>  directory right click or drag and move to trash, for some reason if we are not able to delete then run command from terminal window [rm -rf /Application/IntelliJIdea14 as user / or as super user ( sudo) ].
2. Goto the following directory where ‘username’ is your username and AppName will be something like ‘jetbrains.intellij’ /Users/username/Library/Preferences/AppName
3. remove all residue files [~ is user home directory /Users/username]:
1. ~/Library/Caches/IntelliJIdeaXX
2. ~/Library/Logs/IntelliJIdeaXX
3. ~/Library/Preferences/IntelliJIdeaXX
4. ~/Library/Application Support/IntelliJIdeaXX
5. ~/Library/Preferences/com.appname.plist
1. ~/Library/Preferences/com.jetbrains.intellij.plist
6. ~/Library/Preferences/com.jetbrains.intellij.plist.lockfile
7. ~/Library/Caches/com.jetbrains.intellij
8. ~/Library/Saved Application State/com.jetbrains.intellij.savedState
9. /Library/Preferences/AppName
10. /Library/Preferences/com.appname.plist
11. /Library/Application Support/AppName
12. Also clear any files from location ~/.intellij  folder or something similar in your home directory.

References:

1. https://intellij-support.jetbrains.com/entries/23358108

2. https://devnet.jetbrains.com/docs/DOC-181

 Installing Intelli J to use JDK 7 /JDK 8

Open Info.plist in an editor and make following changes and save and exit.
$ vi /Applications/IntelliJ IDEA 14.app/Contents/Info.plist

      <key>JVMVersion</key>

      <string>1.6*</string>

change to 

      <key>JVMVersion</key>

      <string>1.8*</string>

and make sure we have LANG=en_US.UTF-8 in our environment.

Intelli J Shortcut

1. Search everywhere with Double Shift Click.
2. Open a file name with 'Shift'+ 'Command'+'O'.
3. Open recent Files with 'Command'+'E'.
4. Open Navigation Bar with 'Command'+'up arrow'.
5. Drag and drop files here from Finder.
6. Search for a java method in a java class: 'Fn'+'Command'+'F12'.
7. Control+space: completion (shift: smart)
8. Command+O to navigate to any class
9. Option+F7 : Edit /find/find usage
10. F1: quick documentation
11. Command+B: navigate declaration
12. Command+F12: Navigate File structure
13. Shift+F6: refactor / rename
14. Control+o: code override methods
15. Control+I: code implements method of interface
16. Command+N [code generation]
17. Option +F1: 
18. F12: moves the focus from editor to last focus tool window
19. Option+Command+T: Code / surround with
20. Navigate implementation of abstract method: option+command+B
21. Option+up arrow: extend selection.
22. Option+Command+V: simplify complicated statement (refractor / extract / variable)
23. Comment(s):Command+/  and option+command+/
24. Browser with documentation: shift+F1
25. Command+D: duplicates
26. Command+Delete: Delete
27. Command+P: paranthesis parameter
28. Shift+Command+Delete: Naviagate last editted location - history
29. Shift+Command+F7: Edit find highlighted item in file (Command+G and Shift+Command+G: to naviage)
30. Control+Shift+Q: view / context info, to see declaration of current method.
31. Command+E: view recent files
32. F2/Shift+F2: to jump between highlighted syntax error.
33. Option+command+up arrow / option+command+down arrow: shortcut to jump between compiler error messages or search option results
34. Command+J: live code completion template
35. Control+ uparrow / Control+down arrow: to move between methods
36. Control+Shift+J: combine two lines
37. Shift+Command+V: clipboard paste
38. Control+H: inheritance hierarchy of a selected class.
39. Option+Command+O: to search a method or a field in a class.
40. Option+Shift+C: to quickly review your recent changes to the project
41. Control+tilt: View quick switch schemes
42. Shift+Command+Enter: to complete a current statement such as if , try catch return etc.
43. Option + space: view quick definition
44. Option+Shift+Commnad+C:Edit copy reference
45. Control+Option+R: access run / debug dropdown on the main toolbar
46. Option+Command+F7: Edit find show usage
47. Shift+Command+A: Help / Find action
48. To quickly find and run an inspection: option+shift+command+I
49. Option+Enter: to create test
50. Alt: multiple cursor
51. Control+K: commit changes
52. Command+F: search pane Command+R: replace [Path: Shift]

Check Port bind exception:
1. We can try $ netstat -anp tcp | grep 8080
2. If our netstat doesn't support -p, use lsof then try $ lsof -i tcp:8080
3. to free up run $ kill -9 processId.