1 The following commonly used shortcut keys need to be constantly experienced in actual operation to truly feel their convenience. 2 3 Ctrl + Alt + S Open settings options 4 5 Ctrl + / comment, uncomment (single line comment) 6 7 Ctrl + Shift + / comment, uncomment (multiline comment) 8 9 Ctrl + N Open class by entering class name (The standard way is to find the class file) 10 11 Ctrl + Shift + N Enter the file name to open the file (the standard way is to find the file) 12 13 Ctrl + Y Delete the current line 14 15 Ctrl + D Copy the current line to the next line 16 17 Ctrl + X Cut the current line (also delete the current line) 18 19 Ctrl + V Paste 20 21Ctrl + R Replace 22 23 Ctrl + F Find in the current file (use F3 to switch between multiple results found) 24 25 Ctrl + Shift + F Find in a specified range (more detailed) 26 27 Ctrl + P View a function Available parameters/ see what values are available for a property, etc. 28 29 Ctrl + Shift + 1, 2, 3, 4 Label a line. Combine Ctrl + 1, 2, 3, 4 to quickly locate a marked line. Suitable for files with a particularly large number of lines. 30 31 Ctrl + delete Deletes a contiguous unit. For example, words, linked words, linked Chinese characters, etc. 32 33 Ctrl + W Selects a unit. If you press it continuously, the selection range will continue to expand. 34 35 Ctrl + left and right arrows (navigation keys left and right) Jump by unit. 36 37 Ctrl + (-/+) Collapse or expand a block of code (for example, a comment or a method is too long, you can press Ctrl + -put it away) 38 39 Ctrl + E Open recent file 40 41 Ctrl + Shift + E Open recently edited file 42 43 Ctrl + Tab directly open recent file 44 45 Ctrl + F12 View internal members of current file or say View the structure of this document 46 47 Ctrl + G Jump to the specified line 48 49 Ctrl + F4 Close the current file 50 51 Ctrl + B Open a class (java) declaration, other such as html jsp files are similar. Equivalent to editing the java class file in eclipse, hold down the Ctrl key and click the class name to enter the class declaration. 52 53 Ctrl + H View the inheritance relationship of the current class (press Shift + Esc to close) 54 55 Ctrl + Shift View the inheritance relationship of a method (press Shift + Esc to close) 56 57 Ctrl + Q View documentation58 59 Ctrl + Alt + L Format code 60 61 Ctrl + Shift + I View class or method body 62 63 Ctrl + Alt + O Automatically import packages64 65 Ctrl + Alt + Enter Open a new line above the line 66 67 Ctrl + Shift + up and down arrows move code blocks up and down (compare Alt + Shift + up and down arrows) 68 69 Ctrl + Shift + U Switch case 70 71 Ctrl + Shift + V Paste special (cut board with multiple options) 72 73 Ctrl + Shift + C Copy the path of the current file 74 75 Ctrl + Shift + J Merge the next line to the current line76 77 Ctrl + Shift + (-/+ ) Collapse or expand all code blocks78 79 Ctrl + Shift + Space Auto-prompt80 81 Alt + Enter Auto-import package according to the prompt82 83 Alt + left and right arrows in Jump between multiple files currently punched in 84 85 Alt + / Autocomplete 86 87 Alt + mouse selection can select a square area (column mode) 88 89 Alt + Home Lock to the navigation column, press the navigation key to open the file directly 90 91 Alt + 1, 2 92 93 Alt + Insert Insert constructors, toString methods, etc. 94 95 Alt + F7 See where methods are called 96 97 Shift + F6 Rename (for example, select the variable named thread, press Shift + F6 to rename, you can rename all variables originally named thread in this class) 98 99 Shift + Enter to open a new one under the current line a line 100 101 Shift + Home / End Select the area where the cursor is at the beginning/end of the line 102 103 Shift + Navigation arrows Free selection 104 105 Shift + F11 View bookmarks