如何在Visual Studio Code中启用预览功能?

Question

我在Java 16中使用密封类，我得到了一个错误:

Sealed Type is a preview feature and disabled by default. Use --enable-preview to enable

如何在VS Code中启用预览功能?

Answer 1

当您打开独立的Java文件(即没有Eclipse/Maven/Gradle设置)时，默认启用预览功能。在User Settings.json中配置java.configuration.runtimes首选项:

"java.configuration.runtimes": [
{
"name": "JavaSE-16",
"path": "/path/to/jdk-16",
"default": true
},
{
"name": "JavaSE-15",
"path": "/path/to/jdk-15",
},
],

Eclipse/Maven/Gradle项目设置视图