前言
在使用 InelliJ IDEA 的过程中，如果能熟练的将快捷键应用于实际开发过程中,效率将大大提高!!! Try it ！
提示：以下是本篇文章正文内容
一、是什么？
重要设置!!!
.
1、如果你不想让指示事件细节的“亮球”图标在编辑器上显示，通过按 Alt-Enter组合键打开所有事件列表然后用鼠标点击它就可以把这个事件文本附件的亮球置成非活动状态。
这样以后就不会有指示特殊事件的亮球出现了，但是你仍然可以用 Alt-Enter 快捷键使用它。
1. If you don’t want the “bright ball” icon indicating the details of the event to be displayed on the editor, press the Alt-Enter key combination to open the list of all events and click on it with the mouse to set the bright ball attached to the event text to non Active status.
This way, there will be no bright ball indicating special events in the future, but you can still use it with the Alt-Enter shortcut.
2 、在使用 CodeCompletion 时，可以用逗点（ . ）字符，逗号（，）分号（；），空格和其它字符输入弹出列表里的当前高亮部分。选择的名字会随着输入的字符自动输入到编辑器里。
2.When using CodeCompletion, you can use comma (.) characters, commas (,) semicolons (😉, spaces and other characters to enter the currently highlighted part of the pop-up list. The selected name will be automatically entered into the editor along with the entered characters.
3 、在任何工具窗口里使用 Escape 键都可以把焦点移到编辑器上。 Shift-Escape
不仅可以把焦点移到编辑器上而且还可以隐藏当前（或最后活动的）工具窗口。 F12 键把焦点从编辑器移到最近使用的工具窗口。
3. Use the Escape key in any tool window to move the focus to the editor. Shift-Escape
Not only can you move the focus to the editor, but you can also hide the current (or last active) tool window. The F12 key moves the focus from the editor to the most recently used tool window.
4 、在调试程序时查看任何表达式值的一个容易的方法就是在编辑器中选择文本（可以按几次 Ctrl-W 组合键更有效地执行这个操作）然后按 Alt-F8 。
4. An easy way to view the value of any expression when debugging a program is to select the text in the editor (you can press the Ctrl-W key combination several times to perform this operation more effectively) and then press Alt-F8.
5 、要打开编辑器脱字符处使用的类或者方法 Java 文档的浏览器，就按 Shift-F1 （右键菜单的 External
JavaDoc ）。 要使用这个功能须要把加入浏览器的路径，在“ General ”选项中设置（ Options | IDE
Settings ），另外还要把创建的 Java 文档加入到工程中（ File | Project Properties ）。
5. To open the browser of the Java document of the class or method used in the editor caret, press Shift-F1 (External in the right-click menu).
JavaDoc). To use this function, you need to add the path to the browser, set in the “General” option (Options | IDE
Settings ), and add the created Java document to the project (File | Project Properties ).
6 、用 Ctrl-F12 （ View | File Structure Popup ）键你可以在当前编辑的文件中快速导航。
这时它会显示当前类的成员列表。选中一个要导航的元素然后按 Enter 键或 F4
键。要轻松地定位到列表中的一个条目，只需键入它的名字即可。
6. Use Ctrl-F12 (View | File Structure Popup) keys to quickly navigate in the currently edited file.
At this time it will display a list of members of the current class. Select an element to be navigated and press Enter or F4
key. To easily locate an item in the list, just type its name.
7 、在代码中把光标置于标记符或者它的检查点上再按 Alt-F7 （右键菜单中的 Find Usages…
）会很快地查找到在整个工程中使用地某一个类、方法或者变量的位置。
7. In the code, place the cursor on the marker or its checkpoint and press Alt-F7 (Find Usages in the right-click menu…
) Will quickly find the location of a certain class, method or variable used in the entire project.
8 、按 Ctrl-N （ Go to | Class… ）再键入类的名字可以快速地在编辑器里打开任何一个类。从显示出来的下拉列表里选择类。 同样的方法你可以通过使用 Ctrl-Shift-N
（ Go to | File… ）打开工程中的非 Java 文件。
8. Press Ctrl-N (Go to | Class…) and type the name of the class to quickly open any class in the editor. Select the class from the displayed drop-down list. In the same way, you can use Ctrl-Shift-N
(Go to | File…) Open non-Java files in the project.
9 、要导航代码中一些地方使用到的类、方法或者变量的声明，把光标放在查看项上再按 Ctrl-B 即可。也可以通过按 Ctrl 键的同时在查看点上单击鼠标键调转到声明处。
9. To navigate the declarations of classes, methods or variables used in some places in the code, place the cursor on the viewing item and press Ctrl-B. You can also press Ctrl
While pressing the key, click the mouse button on the viewing point to switch to the statement.
10 、 Ctrl-W
（选择字）在编辑器里的功能是先选择脱字符处的单词，然后选择源代码的扩展区域。举例来说，先选择一个方法名，然后是调用这个方法的表达式，然后是整个语句，然后包容块，等等。
10 、 Ctrl-W
(Select word) The function in the editor is to first select the word at the caret, and then select the extended area of the source code. For example, first choose a method name, then the expression that calls the method, then the entire statement, then the containment block, and so on.
11 、写代码时用 Alt-Insert （ Code|Generate… ）可以创建类里面任何字段的 getter 与 setter
方法。
1 2 、右键点击断点标记（在文本的左边栏里）激活速查菜单，你可以快速设置 enable/disable 断点或者条件它的属性。
1 3 、 CodeCompletion （代码完成）属性里的一个特殊的变量是，激活 Ctrl-Alt-Space
可以完成在或不在当前文件里的类名。如果类没有引入则 import 标志会自动创建。
1 4 、使用 Ctrl-Shift-V
快捷键可以将最近使用的剪贴板内容选择插入到文本。使用时系统会弹出一个含有剪贴内容的对话框，从中你可以选择你要粘贴的部分。
1 5 、利用 CodeCompletion （代码完成）属性可以快速地在代码中完成各种不同地语句，方法是先键入一个类名地前几个字母然后再用
Ctrl-Space 完成全称。如果有多个选项，它们会列在速查列表里。
1 6 、用 Ctrl-/ 与 Ctrl-Shift-/ 来注释 / 反注释代码行与代码块。
-/ 用单行注释标记（“ //… ”）来注释 / 反注释当前行或者选择地代码块。而 Ctrl-Shift-/ 则可以用块注释标记（“ /…/ ”）把所选块包围起来。要反注释一个代码块就在块中任何一个地方按 Ctrl-Shift-/ 即可。
1 7 、按 Alt-Q （ View|Context Info
）可以不需要移动代码就能查看当前方法地声明。连续按两次会显示当前所编辑的类名。
1 8 、使用 Refactor|Copy Class…
可以创建一个所选择的类的“副本”。这一点很有用，比如，在你想要创建一个大部分内容都和已存在类相同的类时。
1 9 、在编辑器里 Ctrl-D 可以复制选择的块或者没有所选块是的当前行。
20 、把光标放到查看点上再按 Ctrl-Alt-B 可以导航到一个抽象方法的实现代码。 21 、要看一个所选择的类的继承层次，按 Ctrl-H （ Browse Type Hierarchy ）即可。也可以激活编辑器中的继承关系视图查看当前编辑类的继承关系。22 、使用 Ctrl-Shift-F7 （ Search | Highlight Usages in File ）可以快速高亮显示当前文件中某一变量的使用地方。按 Escape 清除高亮显示。 23 、用 Alt-F3 （ Search | Incremental Search ）在编辑器中实现快速查查找功能。 在“ Search for: ”提示工具里输入字符，使用箭头键朝前和朝后搜索。按 Escape 退出。 24 、按 Ctrl-J 组合键来执行一些你记不起来的 Live Template 缩写。比如，键“ it ”然后按 Ctrl-J 看看有什么发生。 25 、 Introduce Variable 整合帮助你简化代码中复杂的声明。举个例子，在下面的代码片断里，在代码中选择一个表达式：然后按 Ctrl-Alt-V 。 26 、 Ctrl-Shift-J 快捷键把两行合成一行并把不必要的空格去掉以匹配你的代码格式。 27 、 Ctrl-Shift-Backspace （ Go to | Last Edit Location ）让你调转到代码中所做改变的最后一个地方。 多按几次 Ctrl-Shift-Backspace 查看更深的修改历史。 28 、用 Tools | Reformat Code… 根据你的代码样式参考（查看 Options | IDE Setting | Code Style ）格式化代码。 使用 Tools | Optimize Imports… 可以根据设置（查看 Options | IDE Setting | Code Style | Imports ）自动“优化” imports （清除无用的 imports 等）。 29 、使用 IDEA 的 Live Templates | Live Templates 让你在眨眼间创建许多典型代码。比如，在一个方法里键入。再按 Tab 键看有什么事情发生了。 用 Tab 键在不同的模板域内移动。查看 Options | Live Templates 获取更多的细节。 30 、要查看一个文件中修改的本地历史，激活右键菜单里的 Local VCS | Show History… 。也许你可以导航不同的文件版本，看看它们的不同之处再回滚到以前的任何一个版本吧。 使用同样的右键菜单条目还可以看到一个目录里修改的历史。有了这个特性你就不会丢失任何代码了。 31 、如果要了解主菜单里每一个条目的用途，把鼠标指针移到菜单条目上再应用程序框架的底部的状态栏里就会显示它们的一些简短描述，也许会对你有帮助。 32 、要在编辑器里显示方法间的分隔线，打开 Options | IDE Settings | Editor ，选中“ Show method separators ”检查盒（ checkbox ）。 33 、用 Alt-Up 和 Alt-Down 键可以在编辑器里不同的方法之间快速移动。 34 、用 F2/Shift-F2 键在高亮显示的语法错误间跳转。用 Ctrl-Alt-Down/Ctrl-Alt-Up 快捷键则可以在编译器错误信息或者查找操作结果间跳转。 35 、通过按 Ctrl-O （ Code | Override Methods… ）可以很容易地重载基本类地方法。要完成当前类 implements 的（或者抽象基本类的）接口的方法，就使用 Ctrl-I （ Code | Implement Methods… ）。 36 、如果光标置于一个方法调用的括号间，按 Ctrl-P 会显示一个可用参数的列表。 37 、要快速查看编辑器脱字符处使用的类或方法的 Java 文档，按 Ctrl-Q （在弹出菜单的 Show Quick JavaDoc 里）即可。 38 、像 Ctrl-Q （ Show Quick JavaDoc 显示简洁 Java 文档）， Ctrl-P （ Show Parameter Info 显示参数信息）， Ctrl-B （ Go to Declaration 跳转到声明）， Shift-F1 （ External JavaDoc 外部 Java 文档）以及其它一些快捷键不仅可以在编辑器里使用，也可以应用在代码完成右键列表里。 39 、 Ctrl-E （ View | Recent Files ）弹出最近访问的文件右键列表。选中文件按 Enter 键打开。 40 、在 IDEA 中可以很容易地对你的类，方法以及变量进行重命名并在所有使用到它们的地方自动更正。试一下，把编辑器脱字符置于任何一个变量名字上然后按 Shift-F6 （ Refactor | Rename… ）。在对话框里键入要显示地新名字再按 Enter 。你会浏览到使用这个变量地所有地方然后按“ Do Refactor ”按钮结束重命名操作。 41 、要在任何视图（ Project View 工程视图， Structure View 结构视图或者其它视图）里快速选择当前编辑地部分（类，文件，方法或者字段），按 Alt-F1 （ View | Select in… ）。 42 、在“ new ”字符后实例化一个已知类型对象时也许你会用到 SmartType 代码完成这个特性。比如，键入再按 Ctrl-Shift-Space ： 43 、通过使用 SmartType 代码完成，在 IDEA 中创建接口的整个匿名 implementation 也是非常容易的，比如，对于一些 listener （监听器），可以键入 Component component; component.addMouseListener( new <caret is here> ); 然后再按 Ctrl-Shift-Space 看看有什么发生了。 44 、在你需要设置一个已知类型的表达式的值时用 SmartType 代码完成也很有帮助。比如，键入 String s = ( <caret is here> 再按 Ctrl-Shift-Space 看看会有什么出现。 45 、在所有视图里都提供了速查功能：在树里只需键入字符就可以快速定位到一个条目。 46 、当你想用代码片断捕捉异常时，在编辑器里选中这个片断，按 Ctrl-Alt-T （ Code | Surround with… ）然后选择“ try/catch ”。它会自动产生代码片断中抛出的所有异常的捕捉块。在 Options | File Templates | Code tab 中你还可以自己定制产生捕捉块的模板。 用列表中的其它项可以包围别的一些结构。 47 、在使用代码完成时，用 Tab 键可以输入弹出列表里的高亮显示部分。 不像用 Enter 键接受输入，这个选中的名字会覆盖掉脱字符右边名字的其它部分。这一点在用一个方法或者变量名替换另一个时特别有用。 48 、在声明一个变量时代码完成特性会给你显示一个建议名。比如，开始键入“ private FileOutputStream ”然后按 Ctrl-Space 在 Options | IDE Setting | Code Style 中还可以为本地变量，参数，实例及静态字段定制名字。
If you don’t want the “bright ball” icon indicating the details of the event to be displayed on the editor, press the Alt-Enter key combination to open the list of all events and click on it with the mouse to set the bright ball attached to the event text to non Active status.
This way, there will be no bright ball indicating special events in the future, but you can still use it with the Alt-Enter shortcut.
2.When using CodeCompletion, you can use comma (.) characters, commas (,) semicolons (😉, spaces and other characters to enter the currently highlighted part of the pop-up list. The selected name will be automatically entered into the editor along with the entered characters.
Use the Escape key in any tool window to move the focus to the editor. Shift-Escape
Not only can you move the focus to the editor, but you can also hide the current (or last active) tool window. The F12 key moves the focus from the editor to the most recently used tool window.
An easy way to view the value of any expression when debugging a program is to select the text in the editor (you can press the Ctrl-W key combination several times to perform this operation more effectively) and then press Alt-F8.
To open the browser of the Java document of the class or method used in the editor caret, press Shift-F1 (External in the right-click menu).
JavaDoc). To use this function, you need to add the path to the browser, set in the “General” option (Options | IDESettings ), and add the created Java document to the project (File | Project Properties ).
Use Ctrl-F12 (View | File Structure Popup) keys to quickly navigate in the currently edited file.
At this time it will display a list of members of the current class. Select an element to be navigated and press Enter or F4 key. To easily locate an item in the list, just type its name.
In the code, place the cursor on the marker or its checkpoint and press Alt-F7 (Find Usages in the right-click menu…) Will quickly find the location of a certain class, method or variable used in the entire project.
Press Ctrl-N (Go to | Class…) and type the name of the class to quickly open any class in the editor. Select the class from the displayed drop-down list. In the same way, you can use Ctrl-Shift-N
(Go to | File…) Open non-Java files in the project.
To navigate the declarations of classes, methods or variables used in some places in the code, place the cursor on the viewing item and press Ctrl-B. You can also press Ctrl
While pressing the key, click the mouse button on the viewing point to switch to the statement.
10 、 Ctrl-W
(Select word) The function in the editor is to first select the word at the caret, and then select the extended area of the source code. For example, first choose a method name, then the expression that calls the method, then the entire statement, then the containment block, and so on.
When writing code, use Alt-Insert (Code|Generate…) to create getters and setters for any field in the class
method.
1 2. Right-click the breakpoint mark (in the left column of the text) to activate the quick search menu, you can quickly set the enable/disable breakpoint or condition its properties.
1 3. A special variable in the CodeCompletion property is to activate Ctrl-Alt-Space
Can complete the class name in the current file or not. If the class is not imported, the import flag will be created automatically.
1 4. Use Ctrl-Shift-V
Shortcut keys can insert the most recently used clipboard content selection into the text. When using, the system will pop up a dialog box containing the cut and paste content, from which you can select the part you want to paste.
Use the CodeCompletion (code completion) attribute to quickly complete various statements in the code by typing the first few letters of a class name and then using it
Ctrl-Space completes the full name. If there are multiple options, they will be listed in the quick search list.
1 6. Use Ctrl-/ and Ctrl-Shift-/ to comment/uncomment code lines and code blocks.
-/ Use single-line comment mark (" //… “) to comment/uncomment the current line or selected code block. And Ctrl-Shift-/ can use the block comment mark (” / … / ") to surround the selected block. To uncomment a code block, press Ctrl-Shift-/ anywhere in the block.
1 7. Press Alt-Q (View|Context Info
) You can view the declaration of the current method without moving the code. Press twice in succession to display the currently edited class name.
1 8. Use Refactor|Copy Class…
It is possible to create a “copy” of the selected class. This is useful, for example, when you want to create a class that is mostly the same as an existing class.
In the editor, Ctrl-D can copy the selected block or the current line without the selected block.
1 2. Right-click the breakpoint mark (in the left column of the text) to activate the quick search menu, you can quickly set the enable/disable breakpoint or condition its properties.
1 3. A special variable in the CodeCompletion property is to activate Ctrl-Alt-Space
Can complete the class name in the current file or not. If the class is not imported, the import flag will be created automatically.
1 4. Use Ctrl-Shift-V
Shortcut keys can insert the most recently used clipboard content selection into the text. When using, the system will pop up a dialog box containing the cut and paste content, from which you can select the part you want to paste.
Use the CodeCompletion (code completion) attribute to quickly complete various statements in the code by typing the first few letters of a class name and then using it
Ctrl-Space completes the full name. If there are multiple options, they will be listed in the quick search list.
1
2
1 6. Use Ctrl-/ and Ctrl-Shift-/ to comment/uncomment code lines and code blocks.
-/ Use single-line comment mark (" //… “) to comment/uncomment the current line or selected code block. And Ctrl-Shift-/ can use the block comment mark (” / … / ") to surround the selected block. To uncomment a code block, press Ctrl-Shift-/ anywhere in the block.
1 7. Press Alt-Q (View|Context Info
) You can view the declaration of the current method without moving the code. Press twice in succession to display the currently edited class name.
1 8. Use Refactor|Copy Class…
It is possible to create a “copy” of the selected class. This is useful, for example, when you want to create a class that is mostly the same as an existing class.
In the editor, Ctrl-D can copy the selected block or the current line without the selected block. 20. Put the cursor on the viewing point and press Ctrl-Alt-B to navigate to the implementation code of an abstract method. 21. To see the inheritance hierarchy of a selected class, press Ctrl-H (Browse Type Hierarchy ). You can also activate the inheritance relationship view in the editor to view the inheritance relationship of the current editing class. 22. Use Ctrl-Shift-F7 (Search | Highlight Usages in File) can quickly highlight the use of a variable in the current file. Press Escape to clear the highlight. 23. Use Alt-F3 (Search | Incremental Search) to realize the quick search function in the editor. in" Search for: "Enter characters in the prompt tool, use the arrow keys to search forward and backward. Press Escape to exit. 24. Press the Ctrl-J key combination to execute some Live Template abbreviations that you can't remember. For example, key "it" and press Ctrl-J See what happens. 25. Introduce Variable integration helps you simplify complex declarations in the code. For example, in the following code snippet, select an expression in the code: then press Ctrl-Alt-V. 26. Ctrl-Shift-J shortcut keys combine two lines into one line and remove unnecessary spaces to match your code format. 27 、 Ctrl-Shift-Backspace （ Go to | Last Edit Location ) Lets you transfer to the last place of the change in the code. Press Ctrl-Shift-Backspace several times to see a deeper revision history. 28. Use Tools | Reformat Code... Reference according to your code style (see Options | IDE Setting | Code Style) format code. Use Tools | Optimize Imports... according to the settings (see Options | IDE Setting | Code Style | Imports) automatically "optimize" imports (clear useless imports) Wait). 29. Use IDEA's Live Templates | Live Templates Let you create many typical codes in the blink of an eye. For example, type in a method. Press Tab again to see what happened. Use the Tab key to move within the different template fields. View Options | Live Templates for more details. 30. To view the local history of changes in a file, activate Local VCS | Show History... in the right-click menu . Maybe you can navigate the different file versions to see the differences and then roll back to any previous version. Using the same right-click menu item, you can also see the history of changes in a directory. With this feature, you won't lose any code. 31. If you want to understand the purpose of each item in the main menu, move the mouse pointer to the menu item and then some brief descriptions of them will be displayed in the status bar at the bottom of the application frame, which may be helpful to you. 32. To display the separation line between methods in the editor, open Options | IDE Settings | Editor and select "Show method separators "checkbox (checkbox). 33. Use the Alt-Up and Alt-Down keys to quickly move between different methods in the editor. 34. Use the F2/Shift-F2 keys to jump between the highlighted syntax errors. Use Ctrl-Alt-Down/Ctrl-Alt-Up Shortcut keys can jump between compiler error messages or search operation results. 35. By pressing Ctrl-O (Code | Override Methods...) you can easily override the basic class methods. To complete the current class Implements (or abstract basic class) interface methods, use Ctrl-I (Code | Implement Methods... ). 36. If the cursor is placed between the brackets of a method call, pressing Ctrl-P will display a list of available parameters. 37. To quickly view the Java documentation of the class or method used at the editor caret, press Ctrl-Q (in the Show Quick JavaDoc of the pop-up menu) 里) can be. 38. Like Ctrl-Q (Show Quick JavaDoc to display concise Java documents), Ctrl-P (Show Parameter Info displays parameter information), Ctrl-B (Go to Declaration jumps to declaration), Shift-F1 (External JavaDoc) and some other shortcut keys can be used not only in the editor, but also in the right-click list of code completion. 39. Ctrl-E (View | Recent Files) pops up the right-click list of recently accessed files. Select the file and press Enter to open it. 40. In IDEA You can easily rename your classes, methods, and variables and automatically correct them wherever they are used. Try it, put the editor caret on any variable name and press Shift-F6 (Refactor | Rename...). Type in the new name to be displayed in the dialog box and press Enter . You will browse to all the places where this variable is used and then press the "Do Refactor" button to end the rename operation. 41. In any view (Project View, Structure View Quickly select the current editing part (class, file, method or field) in the structure view or other views, and press Alt-F1 (View | Select in...). 42. When instantiating an object of a known type after the "new" character, you may use SmartType code to complete this feature. For example, type and press Ctrl-Shift-Space ： 43. Through the use of SmartType code completion, the entire anonymous implementation of the interface is created in IDEA It is also very easy. For example, for some listeners, you can type Component component; component.addMouseListener( new ); Then press Ctrl-Shift-Space again to see what happens. 44. It is also helpful to use SmartType code completion when you need to set the value of an expression of a known type. For example, type String s = ( Press Ctrl-Shift-Space again to see what happens. 45. Quick search function is provided in all views: you can quickly locate an item by typing characters in the tree. 46. When you want to catch the exception with a code snippet, select this snippet in the editor and press Ctrl-Alt-T (Code | Surround with... ) Then select "try/catch". It will automatically generate catch blocks for all exceptions thrown in the code snippet. In Options | File Templates | In the Code tab, you can also customize the template for generating the capture block. Use other items in the list to surround other structures. 47. When using the code completion, use the Tab key to enter the highlighted part in the pop-up list. Not like using Enter Key to accept the input, the selected name will overwrite the rest of the name to the right of the caret. This is especially useful when replacing one method or variable name with another. 48. The code completion feature will show you a suggested name when declaring a variable. For example, start typing "private FileOutputStream" and press Ctrl-Space 在 Options | IDE Setting | Code Style You can also customize names for local variables, parameters, instances, and static fields.
总结
IDEA简简单单,用习惯了,特别方便.
