Idea

shortcut keys

Ctrl W expand_扩大 the code selection

Ctrl Shift W shrink_收缩 the code selection

Ctrl / comment_注释 lines

Ctrl Shift / comment blocks code

Ctrl D duplicate_复制 lines

Ctrl Y delete lines

Alt Shift down move the current line down

Alt Shift up move the current line up

Ctrl Shift down move the whole method down

Ctrl Shift up move the whole method up

Ctrl - collapse_折叠 a code fragment_片段

Ctrl = expand_展开 a code region

Ctrl Shift - collapse all regions in the file

Ctrl Shift = expand all available regions

Ctrl Alt T surround_包围 the selected code fragment_片段 with some template code

Ctrl Shift Delete unwrap_{打开。。。包装}

Alt J select the symbol_符号 at the caret_{脱字号；补注号}

Alt Shift J to deselect the last occurrence_出现

Ctrl Alt Shift J select all occurrence_出现 in the file

Find Ctrl F and replace Ctrl R

• Press Ctrl F to display the search bar. In the Find in Files dialog, you can switch to replace by pressing Ctrl Shift R.
• Press Ctrl R to add another field where you can type the replace string. Press Ctrl Shift F to hide the Replace with field and switch to regular search.

Show usages Ctrl Alt F7 (Edit | Find Usages | Show Usages) . To jump to a usage, select it from the list and press Enter.

Show file structure Ctrl F12

• You can quickly navigate_导航 within the current file with Ctrl F12 (Navigate | File Structure).
• File structure shows the list of members of the current class. To navigate to an element, select it and press Enter or F4.
• To easily locate_定位 an item in the list, start typing its name