Boost Your IntelliJ IDEA Productivity with These Handy Customizations

Show Toolbar

Enable the toolbar and tool buttons via View → Toolbar and View → Tool Buttons .

Mouse Hover Quick Documentation

Activate quick documentation on hover: File → Settings → Editor → General → Show quick documentation…

Method Separator Display

Show method separators: File → Settings → Editor → Appearance → (check the option)

Case‑Insensitive Code Completion

Disable strict case‑sensitivity for suggestions: File → Settings → Editor → General → Code Completion → (adjust settings)

Theme Settings

Switch between light and dark themes via File → Settings → Appearance & Behavior → Appearance . For eye‑friendly themes, adjust background colors in the same menu.

Auto‑Import Packages

Enable automatic import and removal of unused imports: File → Settings → Editor → General → Auto Import → (check the options)

Show Multiple Tabs in One Row

Disable the single‑row tab limit: File → Settings → Editor → General → Editor Tabs → (uncheck the box)

Font Settings

Adjust editor font size and family: File → Settings → Editor → Font → (choose size and type)

Documentation Comment Templates

Configure class and method comment templates for better team collaboration (see original source for detailed steps).

Horizontal/Vertical Code Display

Set code comparison orientation via right‑click on tabs (Eclipse‑style).

Shortcut Remapping

Map shortcuts to Eclipse equivalents, e.g., Ctrl + D for line deletion (instead of IntelliJ’s Ctrl + Y ).

Remove Italic Formatting from Comments

Disable italic style for comments via File → Settings → Editor → (relevant option) .

Code Inspection Warning Levels

Keep inspection warnings enabled to improve code quality.

Project Directory – Collapse Empty Packages

Use the view option to collapse empty packages in the project tree.

Window Reset

Restore default window layout via the restore action when the UI becomes disordered.

Local History

View local code history to track changes.

Quick Semicolon Completion

Press Ctrl + Shift + Enter to insert a semicolon at the end of the current line.

Find Controller Methods Quickly

Use Ctrl + Alt + Shift + N to search for controller methods by URL path.

Brace Matching

Navigate matching braces with Ctrl + ] or Ctrl + [ when the cursor is on a brace.

Configuration Files

The IDE stores settings in two main folders: config (user preferences) and system (runtime data). Back up config for migration; delete system if the IDE encounters unrecoverable errors.

These customizations make IntelliJ IDEA a more powerful and comfortable coding environment.