The most practical and universal IDEA common settings tutorial
Set theme
Settings->Appearance&Behavior->Appearance->Theme
Supplement: set the theme of the editing area (can be ignored)
Settings->Editor->Color Scheme->Scheme
Set background image
Open IDEA, press the shortcut key Ctrl + Shift + A
Set the mouse wheel to modify the font size
Settings->Editor->General
Hold down Ctrl and scroll the mouse wheel to modify the font size
Set method separator
If multiple methods are written in a class, a dividing line will be set between the methods
Settings->Editor->General->Apperance
Effect picture
Set to cancel the operation of single line display tabs
Settings->Editor->General->Editor Tabs
Set the font color of the comment
Settings->Editor->Language Defaults
Set project file encoding
Prevent file garbled
Settings->Editor->File Encodings
Set up automatic compilation
If not set, after the file is modified, execute again or execute the file before modification
Settings->Build,Execution,Deployment->Compiler
