如何在Sublime文本中為Java設置構建系統？

答案：配置Sublime Text的Java構建系統需安裝JDK並創建自定義構建文件。 1. 確保JDK已安裝且環境變量正確；2. 在Sublime中新建構建系統，使用包含javac和java命令的JSON配置；3. 保存為Java.sublime-build；4. 選擇該構建系統並使用Ctrl B編譯運行，輸出及錯誤將顯示在底部面板，適用於小型項目或學習。

To set up a build system for Java in Sublime Text, you need to configure a custom build system that compiles and runs your Java code using the javac and java commands. This works as long as you have the Java Development Kit (JDK) installed and accessible from your system's command line.

1. Install and Verify JDK

Make sure the JDK is installed on your system. Open a terminal or command prompt and run:

If these commands return version numbers, the JDK is correctly installed and added to your system's PATH.

2. Create a Java Build System in Sublime Text

Go to Tools → Build System → New Build System… in Sublime Text. This opens a new file where you'll define the build configuration.

Replace the default content with the following JSON:

Save the file as Java.sublime-build in the default directory that Sublime suggests (usually Packages/User ).

3. Understanding the Build Configuration

The key parts of the build system:

• cmd : Runs javac to compile the current file, then java to execute the class.
• shell: true : Allows the use of shell operators like && to chain commands.
• $file : Sublime variable for the full path of the current file.
• $file_base_name : Name of the file without extension (used as the class name to run).

This setup assumes your Java file has a main method and the filename matches the public class name.

4. Using the Build System

Open a .java file in Sublime Text. Select your new build system via Tools → Build System → Java .

Press Ctrl B (or Cmd B on macOS) to compile and run. Output appears in the panel at the bottom.

If there are compilation errors, they'll be highlighted and clickable to jump to the line.

Basically, just make sure your environment is set up and the build file uses shell commands properly. It's simple and works well for small projects or learning Java.

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