preface
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Good work is good work
First sharpen your tools
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Recently, I was invited by the department to train IDEA for new employees. I found that although many new employees use IDEA in daily development, they still do not use many useful skills, but only use some basic functions, which is quite a waste of IDEA, an excellent IDE. At the same time, after this sharing, I also learned some new skills, so take this opportunity to share it together. I hope I can help some people.
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IntelliJ IDEA 2018.2.2 (Ultimate Edition)
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Efficient configuration
1. Code prompts are case insensitive
Settings -> Editor -> General -> Code Completion
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(For earlier versions, set Case Sensitive Completion to None.)
2. Automatic package guide function and related optimization function
Settings -> Editor -> General -> Auto Import
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3. CTRL + slide the scroll wheel to adjust the display size of the window
Settings -> Editor -> General -> Change font size (Zoom) with Ctrl+Mouse wheel
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Once selected, you can adjust the font size of the editor window by CTRL+ scroll
4. TAB displays multiple lines
This varies from person to person, some people like to just cancel all the tabs and use the shortcut keys, but I have a big screen, so I like to display all the tabs.
Window -> Editor Tabs -> Tabs Placement, uncheck the Show Tabs In Single Row option.
The effect is as follows:
5. Line numbers are displayed in the code editing area
Settings -> Editor -> General -> Appearance Check ` `Show Line Numbers
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6…
Essential Shortcut keys for Daily Use (★★)
To find the
| shortcuts | introduce |
|---|---|
| Ctrl + F | Text lookup in the current file |
| Ctrl + R | Text replacement in the current file |
| Shift + Ctrl + F | Do text lookup in the project |
| Shift + Ctrl + R | Make text substitution in the project |
| Shift + Shift | Quick search |
| Ctrl + N | Look for the class |
| Ctrl + Shift + N | Find files |
| Ctrl + Shift + Alt + N | Find symbol (find a method name) |
Jump to switch
| shortcuts | introduce |
|---|---|
| Ctrl + E | Recent documents |
| Ctrl + Tab | Switch files |
| Ctrl + Alt + ←/→ | Jump to the location of the historical cursor |
| Alt + ←/→ Arrow key | Switch the son TAB |
| Ctrl + G | Go to (jump to specify line number) |
Coding related
| shortcuts | introduce |
|---|---|
| Ctrl + W | Rapid selected |
| (Shift + Ctrl) + Alt + J | Quickly select the same text |
| Ctrl + C/Ctrl + X/Ctrl + D | Copy or cut quickly |
| Select Tab/Shift + Tab for multiple lines | tab |
| Ctrl + Y | Delete the entire line |
| Scroll to variable/method/class | Quickly get to the definition of a variable/method/class |
| Shift + Tab | Close TAB quickly |
| Ctrl + Z 、Ctrl + Shift + Z | Rescind/cancel rescind |
| Ctrl + Shift + enter | Automatic closure, automatic code completion |
| Alt + enter | IntelliJ IDEA provides a quick fix option based on the problem of the cursor position. The prompt result varies with the cursor position |
| Alt + write/left | Method Fast jump |
| F2 | Jump to the next highlighted error or warning location |
| Alt + Insert | Automatic code generation, such as generating object set/get methods, constructors, toString(), etc |
| Ctrl + Shift + L | Formatting code |
| Shift + F6 | Quickly modify method names, variable names, file names, class names, etc |
| Ctrl + F6 | Modify method signatures quickly |
Code reading correlation
| shortcuts | introduce |
|---|---|
| Ctrl + P | Method parameter prompt is displayed |
| Ctrl + Shift + i | You can pop up another window in the current class |
| Alt + F7 | You can list where variables are used |
| Cursor on subclass interface name, Ctrl + U | Jump to the superclass interface |
| Alt + F1 + 1, ESC | |
| (Shift) + Ctrl + +/- | Code block folding |
| Ctrl + Shift + ←/→ | Move the window divider |
| Ctrl + (Alt) + B | Jump method definition/implementation |
| Ctrl + H | Class hierarchy |
| Ctrl + F12 | Show Members Class Members are displayed quickly |
Versioning related
| shortcuts | introduce |
|---|---|
| Ctrl + D | Show Diff |
| (Shift) + F7 | (top) Next modification |
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See this article for more shortcuts at github.com/judasn/Inte…
For MAC OS shortcuts, see this article github.com/judasn/Inte…
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Coding efficiency correlation (★★)
File code template
Settings -> Editor -> File and Code Template
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Here you can see all the built-in file code templates of IDEA. When you select a file generation, the specified code file will be generated according to the template shown here.
In addition, you can set the file header here.
Once set, the effect is as follows
Real-time code template
IDEA provides powerful real-time code templates, and many templates are built-in natively. For example, when you type sout or PSVM, system.out.println () will be generated quickly and automatically. Public static void main(String[] args) {}
The Templates for these can be seen in Settings -> Editor -> Live Templates. Users can become familiar with the relevant code templates according to their own usage habits.
Custom code templates
IDEA also provides the ability to customize your own real-time code templates.
- Create your own template library
- Create custom code templates
The MyGroup in the figure holds the code template I defined myself.
other
CRTL+ALT+T
Ctrl + Alt + T provides code block wrapping – Surround With. You can quickly wrap the selected code block into the selected statement block.
Local History Version
IDEA comes with local version management, which makes it easier to write code locally.
(★★★)
View mode
IDEA offers two special view modes,
- Presentation Mode – For Code Review scenarios where Code needs to be shown
- Distraction Free Mode — Zen Mode, which focuses on code development
Code debugging
1. Conditional breakpoints
IDEA can set breakpoints for specified conditions, increasing the efficiency of our debugging.
2. Forcibly return
IDEA can force the method return value you want to the caller at the interrupt point on the method stack. Very flexible!
3. Simulate exceptions
IDEA can force an exception to be thrown to the caller at the method stack at the break point. This is very useful when debugging source code.
4. Evaluate Expression
IDEA can also dynamically modify the values of variables in the current method stack when debugging code, which is convenient for debugging.
The plug-in side
Plug-in installation
File -> Setting -> Plugin
Copy the codePlug-in installation, you can directly search for the installation in real time in the PLUGIN library of IDEA. browse plugin repository
For user network is bad, can log in the official plug-in warehouse address: plugins.jetbrains.com/idea, download the package… install from disk
The plugin is recommended
I use plug-ins in daily development
Alibaba Java Coding Guidelines
Ali Java programming protocol plug-in
FindBugs
Code defect scanning
PMD
Code defect scanning
InnerBuilder
Builder mode quick generation
lombok plugin
Lombok plug-in
maven helper
Maven relies on management assistants to parse Maven POM structures and analyze conflicts.
Rainbow brackets
Make parentheses in your code more identifying
String Manipulation
String related auxiliary simplification, with CTRL+W, ALT+J and other text selection shortcut keys to use
Translation
Translation plug-in, read the source code necessary
GenerateAllSetter
Key Promoter X
Shortcuts for your mouse operations
GenerateSerialVersionUID
Alt + Insert quickly generates SerialVersionUID
GsonFormat
RestfulToolkit
- Quick jump to Restful Api (use: Ctrl(Command) + \ or Ctrl + Alt + N)
- This section describes the Resultful interface structure
- HTTP simple request tool
Material Theme UI
My own theme is this.
MyBatis Log Plugin
Mybatis output SQL log restore into a complete SQL statement, looks more intuitive.
From: juejin. Cn/post / 6844903906665824270
