Detailed explanation of the first step of idea learning

idea is currently the most commonly used tool for Java development. This article mainly summarizes its use to improve development efficiency. It focuses on: installation and activation, initial common configuration, shortcut keys and other functions. Several items.

1. Download and Installation

Just download the idea from the official website. The flagship version has more practical functions, so it is recommended to download it.

There are many ways to activate the idea.

2. Initial common configuration

2.1 Configure JDKThe first is to configure the JDK. Open "File"->"project setting" and add the locally installed JDK. (Idea will also bring JDK)

##2.2 Configure maven

Open "File"–> "Other settings"–> "default settings" , just search for "maven" (it can also be set in the setting, it is recommended to set it through the default settings, so that the default configuration can be modified).

After mavne is installed on this machine, configure it as shown in the picture.
2.3 Configure other

Configure encoding UTF-8. Find the picture below and configure it as shown in the red box to avoid garbled characters later.

• 
  Configure git. After configuring git, you can click test on the right to test whether it is successful. Pay attention to the path where git is located.
• 
  
The above are the recommended configuration items for initial installation. Others, such as fonts, plug-ins, modifying shortcut keys and modifying creation class templates, can be queried and modified according to your own needs.

3. Shortcut keys

Search:

idea’s search function is very powerful.

Shortcut keys##ctrl shift f Search files by file name. Just use this to search. It is very easy to use. ctrl shift nSearch for class nameshift shiftSearch for anythingalt F7Search wherever usedctrl alt bFind subclasses or implementation methodsctrl hView inheritance relationshipOperation:

Function

Shortcut keysFunctionshift F6Change nameReturn to the place you just viewed, very practicalClose the current pageDelete the current lineQuickly type public static final StringAutomatically assign variable namesScreenshot

	##ctrl alt
	shift left mouse button
	ctrl x
	psfs
	CRTL ALT V
	shift F4
	The above are the more commonly used shortcut keys. Idea also has many practical shortcut keys, so you can explore them slowly. 4. Other functions 4.1 Toolbar configuration 4.2 View unit test coverage Idea has integrated coverage. Just click run with coverage next to run to view the unit test coverage ##4.3 Configure tomcat 4.4 Maximize the current windowThis is very useful during demonstrations. You can maximize the code window to facilitate viewing the projection demonstration. Method: Open view -> You can maximize the current window, focus on the current window, and facilitate demonstrations. Alt 1 can open the project structure and switch classes. Exit and open the view again to exit this mode. 4.5 The problem of Chinese garbled characters in the consoleAfter the console has garbled characters, if it is still not solved after changing the file encoding to UTF-8: 1. Find the intellij idea installation directory , the two files idea64.exe.vmoptions and idea.exe.vmoptions under the bin folder, add in these two files respectively: -Dfile.encoding=UTF-8 2. Set in the startup parameters of tomcat -Dfile.encoding=UTF-8 3. Then restart the idea, which usually solves the problem. 4.6 SSH remote connection to Linux virtual machineAs shown in the figure, open the connection configuration: Then enter the connection information, this is really powerful . 4.7 Other configurations Find the location of the file in the project Click the following button to automatically open the project structure and display it The location of the file on the right in the project is very convenient in some cases. Java Video Tutorial 】

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