Build path specifies execution environment JavaSE-1.8. There are no JREs installed in the workspace that are strictly compatible with this environment.

はじめに

• JDK 11の環境
• VS Codeでspring boot のプロジェクトを作成

code.visualstudio.com

Build

以下のワーニングが発生

Build path specifies execution environment JavaSE-1.8. There are no JREs installed in the workspace that are strictly compatible with this environment.

The compiler compliance specified is 1.8 but a JRE 11 is used

設定を変更

• mavenならPOM.xml

    <properties>

        <java.version>1.8</java.version>

    </properties>

• gradleならbuild.gradle

sourceCompatibility = '1.8'

1.8を11に変更したら解消した