Shortcut Keys in Java

CTRL +/(keypad) collapse all in the current classCode
CTRL + × (keypad) show all the code in the current class
CTRL + Space Code assistant inserts some code (but it is usually in conflict with the input method. You can modify the key of the input method or replace it with ALT +/for the moment)
CTRL + Shift + e display the managers that manage all Opened Views (you can choose to close or activate them)
CTRL + J forward incremental search (after pressing CTRL + J, each letter editor you enter provides a quick match to locate a word. If not, it is not found in stutes line. It is particularly useful when querying a word. This function was available two years ago)
CTRL + Shift + J reverse incremental search (the same as the previous one, but only from the back to the front)
CTRL + Shift + F4 close all open editer
CTRL + Shift + x change all selected text to lowercase
CTRL + Shift + y change all selected text to lowercase
CTRL + Shift + F format the current Code
CTRL + Shift + P locate the matched character (for example, {}) (when positioning from the front, the cursor must be inside the matched character, followed by the front, and vice versa)

Alt + Shift + R Rename (one of my favorite ones, especially the rename of variables and classes, which saves a lot of labor compared with manual methods)
Alt + Shift + M extraction method (this is one of the most common methods in refactoring, especially useful for a lot of mud code)
Alt + Shift + C modify the function structure (more practical. N functions call this method and modify it once)
Alt + Shift + L extract local variables (you can directly extract some magic numbers and strings into one variable, especially when multiple calls are performed)
Alt + Shift + F convert the local variable in the class to the field variable (more practical)
Alt + Shift + I merge variables (this may be a bit inappropriate inline)
Alt + Shift + V moving functions and variables (not commonly used)