How to write the first java program when using vscode for the first time

VSCode's high CPU usage problem can be solved in the following ways: 1. There are too many plug-ins or the quality is not high. It is recommended to disable infrequently used plug-ins and view running extensions; 2. Large projects consume a lot of loading, so directories that do not need to be listened to can be excluded in settings.json; 3. Search and Git functions are frequently triggered, so you should avoid using complex search options and turn off unnecessary Git automatic refresh; 4. Problems with the editor themselves can try to update, reinstall or clear cache to optimize performance.

To configure VSCode's tasks.json file, you only need to master the basic structure and fields to get started. 1. Create a tasks.json file to generate a template through the VSCode menu "Terminal>Run Tasks>Create tasks.json file". 2. The infrastructure includes version and tasks arrays, and each task includes label (task name), command (execution command), args (parameters), type (execution environment), and problemMatcher (error identification). 3. Common uses such as running npm scripts, you can configure command to npm and args to ["run",&q

The method to enable the automatic line wrap function in VSCode is as follows: 1. Click the word "Wrap" in the status bar in the lower left corner to quickly switch; 2. Enter Settings through the menu to search for wordwrap and check "Editor:WordWrap" or set to on; 3. You can select different line wrap modes such as off, on, wordWrapColumn or bounded; 4. Turn off automatic line wrap for specific file types such as Markdown settings; 5. Directly modify the settings.json file to add corresponding configuration to achieve global or personalized settings.

Yes, VSCode is completely free and includes commercial use. It is developed by Microsoft and published using a MIT license, allowing users to use, install, modify and distribute freely without paying fees or worrying about authorization restrictions; specifically: 1. It can be installed and used on any device, without time limit or feature payment wall; 2. Commercial users do not need to give back to projects or disclose usage; 3. There is no official paid version or advanced features, and all tools such as debugger and Git integration are available for free; 4. Third-party extensions may include paid functions, but are not officially provided; 5. Users can modify and redistribute VSCode, but must comply with license requirements and retain original copyright information; 6. If used in the enterprise environment, the legal team is advised to confirm compliance; for the vast majority of users

The methods to enable the "Save Format" function of VSCode are as follows: 1. Install appropriate formatting tools, such as Prettier or Black; 2. Turn on the "Save Format" option through the setting interface or modifying settings.json; 3. Set the default formatting tools to avoid conflicts; 4. Pay attention to common problems, such as checking tool installation, default settings and file type support when it is not effective. Ensure that the above steps are executed correctly, you can automatically format the code when saving files, improving development efficiency and readability.

VSCode user settings storage location depends on the operating system and is usually located in a specific directory under the user profile. The Windows path is C:\Users$$username]\\AppData\\Roaming\\Code\\User\\settings.json, macOS is /Users\$$username]/Library/ApplicationSupport/Code/User/settings.json, Linux is /home$$username]/.config/Code/User/settings.jso

To directly edit the VSCode settings file, the easiest way is to enter "Preferences:OpenUserSettings(JSON)" through the command panel; in addition, you can also select to open user or workspace settings through the gear icon in the lower right corner → "Settings" → three dot buttons. The user setting path is: Windows: %APPDATA%\Code\User\settings.json; macOS: $HOME/Library/ApplicationSupport/Code/User/settings.json; Linux: $HOME/.config/Code

The most common method to quickly expand selections in VSCode is to use the shortcut keys Shift Alt right arrow (Windows/Linux) or Shift Option right arrow (Mac), which will expand the selection range layer by layer according to the syntax structure; 1. This function can intelligently select code structures, such as variable names, expressions, statement blocks, etc.; 2. Support multi-cursor operations, and can perform expansion selections at multiple locations at the same time, which is convenient for batch modification; 3. Double-click or triple-click on the mouse can also achieve similar effects, and fine-tuning of the arrow keys can improve efficiency.