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The selected JRE does not support the current compliance level of 15

Posted at

事象 : Eclipseの設定を見たらなんか言われてた

  • 環境
    • Windows10 Pro バージョン1903
    • openjdk version "11.0.2" 2019-01-15
      image.png

原因 : コンパイラに設定したJavaのバージョンとずれてるから

[Java] > [Complier]をみると「15」になっていた・・・
こっちでもWhen selecting 15 compliance, make sure to have a compatible JRE installed and activated(currently 11).って言われている・・・

image.png

対応 : コンパイラをインストール済みJREsに設定したバージョンに合わせる

  1. [Preferences]ダイアログ > [Java] > [Compiler]
  2. [Compiler compliance level:]をインストール済みJREsに設定したJavaのバージョンに合わせる > [Apply]ボタンで適用する
  3. [Installed JREs]と[Compiler]に出ていたメッセージが消える
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