IntelliJ IDEA Configuration and Shortcut Guide

1. Set Maven

1. In File → Settings → search "maven" 2. Maven home directory – set the path to the bin folder of the Maven installation 3. User settings file – set the location of the settings.xml file 4. Local repository – set the local repository path

2. IDEA set code line width

1. File → Settings → Editor → Code Style 2. Enable "Wrap when typing reaches right margin" under "Right margin (columns)" 3. In Code Style → Java → Wrapping and Braces, enable "Ensure right margin is not exceeded"

3. IDEA case‑insensitive completion

1. Open File → Settings 2. Set "Case sensitive completion" to NONE

4. Force Maven dependencies update

1. Delete libraries in Project Settings → Libraries 2. Clean the Maven project view to remove previously compiled files 3. Right‑click project → Maven → Reimport

5. IDEA configuration default save location

C:\Users\ username \.IntelliJIdea14 Backup this directory to restore settings if needed. Modify the path in %IDEA_HOME%/bin/idea.properties if required.

6. Hide unwanted files/folders (similar to Eclipse filter)

File → Settings → Search "File Type" → add patterns to ignore

7. Change keymap to Eclipse shortcuts

File → Settings → Keymap → select Eclipse preset

8. Default settings adjustment

Modify default settings as needed via the Settings dialog.

9. Shortcut for marking modified tabs with an asterisk

Editor → General → Editor Tabs → "Mark modified tabs with asterisk"

10. Disable automatic code completion popup

Preferences → IDE Settings → Editor → Code Completion → Autopopup documentation in (ms)

11. Show line numbers

File → Settings → Editor → General → Appearance → Show line numbers

12. Case‑insensitive code completion

File → Settings → Editor → Code Completion → set "Case sensitive completion" to None

13. Mark edited files with *

Editor → General → Editor Tabs → enable "Mark modified tabs with asterisk"

14. Close automatic code suggestions

Preferences → IDE Settings → Editor → Code Completion → Autopopup documentation in (ms)

15. Common shortcuts

Ctrl+Tab, Ctrl+W, Template/Postfix + Tab, Ctrl+Shift+A, Shift+Shift, Ctrl+Shift+Enter, Alt+Insert, etc.

16. Fix SVN not syncing code

File → Settings → Subversion → General → enable "Use command line client" and specify svn.exe path

17. Exclude *.iml files from SVN

Editor → File Types → add *.iml to "Ignore files and folders"

18. Change editor font size

File → Settings → Editor Colors & Fonts → Font → Size

19. IDEA encoding settings

File → Settings → File Encodings → set IDE, Project, and properties file encodings

20. Live Templates

Examples: "sout" expands to System.out.println("..."); , list.for expands to a for‑each loop.

21. Tomcat VM options

-Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m

22. Install IDEA plugins

Online: File → Settings → Plugins → Browse repositories. Offline: Download zip, then File → Settings → Plugins → Install plugin from disk.

23. Adjust IDEA startup memory parameters

Edit %IDEA_HOME%/bin/idea.exe.vmoptions

24. Import Eclipse web project to Tomcat

Add web facet in Facets, then add deployment module in Artifacts.

25. Reduce CPU usage when opening new JSP/Java files

Disable inspections via File → Settings → Editor → Inspection.

26. Add Spring/Struts support

Project Settings → Modules → add appropriate frameworks.

27. Enable automatic compilation after class changes

File → Settings → Build, Execution, Deployment → Compiler → "Make project automatically".

28. Prompt to implement Serializable

Preferences → Editor → Inspections → Serialization issues → enable prompt; then Alt+Enter on class name to generate serialVersionUID .

29. Presentation mode

Alt+V → View → Enter Presentation Mode to focus on a single class; exit via Alt+V → Exit Presentation Mode.

30. Inject Language for JSON strings

Place cursor inside quotes, Alt+Enter → Inject language or reference → select JSON to get proper escaping and editing support.

31. Symbol search

Ctrl+Shift+Alt+N opens Symbol search to locate methods or classes by partial name.

32. Resolve shortcut conflicts with Windows

Right‑click desktop → Graphic Options → Shortcut → disable conflicting shortcuts.

33. Prevent comment formatting when reformatting code

Disable "Enable Javadoc formatting" in code‑style settings.

34. End of guide

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