1. Common shortcut code templates
* main method
* psvm: public static void main(String[] args){}
* main: public static void main(String[] args){}
* output statement
* sout: System.out.println();
* soutp: System.out.println("xxx :" + method parameter);
* soutm: System.out.println("xx class. Current method name");
* soutv: System.out.println("variable name = " + variable);
* variable.sout: System.out.println("variable name = " + variable);
2. IDEA commonly used shortcut keys (Part 1)
* Comment out the selected line with a single-line comment: Ctrl + /
* Select a single-line comment line, press Ctrl + / again to cancel the single-line comment
* Comment out the selected line with a multi-line comment: Ctrl + Shift + /,
* Select the entire multi-line Press Ctrl + Shift + / again in the comment part to cancel multi-line comments
- Duplicate line: Ctrl + D
- Delete line: Ctrl + Y
- Cut line: Ctrl + X
- Rename class, variable, method, etc.: select the element to be renamed, press Shift + F6
- Format code: Ctrl + Alt + L
- Turn case: Ctrl + Shift + U
- Automatically declare variables to receive method call expression results: Ctrl + Alt + V
- Insert a blank line to start editing
* Insert a blank line to start editing on the line below the current cursor: Shift + Back Cart
* Insert a blank line on the line above the current cursor to start editing: Ctrl+Alt+Enter
- Move code
* Move code up: Ctrl+Shift+↑ (Move the whole method) or Alt+Shift+↑ (Move line by line)
* Down Move code: Ctrl+Shift + ↓ (moving the whole method) or Alt + Shift + ↓ (moving line by line)
- Smart Tips: Alt + Enter
- Folding and Expanding-
Folding method implementation: Ctrl + Shift + -
- Expanding method implementation: Ctrl + Shift + +