Java development can be fully utilized with Visual Studio Code, especially suitable for small and medium-sized projects, learning or hybrid multilingual development. 1. Install the Extension Pack for Java plug-in, which includes syntax support, debugging, testing, Maven and project management functions; 2. Configure the JDK environment, and use OpenJDK 11 or 17, and set JAVA_HOME. VS Code can automatically recognize or manually specify paths in settings; 3. Create a project using Maven through the command line or use the "Java: Create a Java project" command in VS Code to quickly generate standard structures; 4. Enjoy intelligent completion, reconstruction, operation and debugging functions when writing code, and support right-click running, F5 debugging and JUnit test button execution with one click; 5. It is recommended to master common shortcut keys such as Ctrl Space Completion, F2 renaming, and Ctrl. Quickly repair and use Eclipse The format engine custom code style and combines built-in Git tools to improve efficiency. Multi-module projects can be automatically recognized by simply opening the root directory. The overall experience is lightweight and smooth, and the resource occupancy is low. It is an efficient alternative to IntelliJ IDEA.
Visual Studio Code for Java development? It's totally OK, and more and more people choose this way.
Although IntelliJ IDEA has always been the mainstream IDE for Java development, VS Code has become very mature with its lightweight, fast startup, rich plug-in ecosystem, and the joint promotion of Microsoft and Red Hat. Especially suitable for small and medium-sized projects, learning Java or scenarios that require mixed multilingual development.
The following key points will help you quickly get started with Java development using VS Code.
1. Install the necessary plug-ins
VS Code itself does not support Java, and it relies on plug-ins to achieve complete functions. The most critical plugin is:
- Extension Pack for Java (Provided by Red Hat)
This is a packaged collection containing the following core components:- Language Support for Java? by Red Hat: Basic syntax highlighting, code completion
- Debugger for Java: Local debugging support
- Test Runner for Java: JUnit test run
- Maven for Java: Maven Project Management
- Project Manager for Java: Project Structure Management
Installation method: Open VS Code → Extension Store → Search for "Extension Pack for Java" → Install.
2. Configure the Java development environment
It's not enough to have plugins, you have to prepare first:
- JDK (Java Development Kit)
- Recommended to use OpenJDK 11 or 17 (LTS version is more stable)
- Available to download from Adoptium
- Set
JAVA_HOMEenvironment variable after installation
VS Code will automatically detect JDKs in the system. If not recognized, you can manually specify it in the settings:
"java.home": "/path/to/your/jdk"
Tip: When multiple JDKs coexist, VS Code will display the currently used JDK in the status bar, and click to switch.
3. Create and manage Java projects
You can open a .java file directly, but it is recommended to use a standard project structure:
Create a project using Maven (recommended)
Run in the terminal:
mvn archetype:generate -DgroupId=com.example -DartifactId=demo-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
Then open this folder in VS Code, and the plug-in will automatically recognize pom.xml and load dependencies.
Or let VS Code create it for you
- Press
Ctrl Shift Pto open the command panel - Enter "Java: Create a Java project"
- Select the build tool (Maven/Gradle)
- Select the project path and package name
It is very convenient to generate a standard structure in just a few seconds.
4. Writing, running and debugging
- Writing code : intelligent prompts, automatic import, refactoring (rename, extraction method, etc.)
- Run Java class : Right-click the editor → "Run Java" or click the "Run" button above the code
- debug :
- Break point
- Click the "Debug" button (or press F5)
- Support variable viewing, call stack, and expression evaluation
The test is just as friendly: the "Run | Debug" button will appear above the JUnit test class, and click it to execute.
5. Common techniques and optimization suggestions
-
Shortcut key habits :
-
Ctrl Space: Trigger code completion -
Ctrl Shift T: Open the class -
F2: Rename -
Ctrl .: Quick fix (import classes, generate variables, etc.)
-
Code formatting : The plug-in uses the Eclipse formatting engine by default, and can customize the style through the configuration file
.settings/org.eclipse.jdt.core.prefs.Git integration : VS Code's Git supports first-class support. After modifying the code, it is submitted directly in the sidebar, which is suitable for learning and practicing.
Multi-module project support : If it is a Maven multi-module project, just open the root directory, and the plug-in will automatically recognize all submodules.
Basically that's it. VS Code does Java development no longer just "useable", but "fast, smooth, and save resources."
If you don't need enterprise-level complex functions (such as deep Spring analysis, code metric scanning), and just write back-end logic, practice algorithms, and do coursework, the VS Code Java plug-in combination is enough, and it is even more refreshing.
Not complicated, but it is easy to ignore details. Install the plug-in right and match the JDK well, and the rest will be as natural as writing Python or JS.
The above is the detailed content of Java Development with Visual Studio Code. For more information, please follow other related articles on the PHP Chinese website!
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