homebrew-caskについては以下記事を読んでセットアップしてください。 MacのBrewで複数バージョンのJavaを利用する - Qiita この手順通りに brew cask install java8 するとエラーが出ます。 $ brew cask install java8 Error: Cask 'java8' is unavailable: No Cask with this name exists. Java有償化問題とJava8のサポート終了の影響で、java8が消えてなくなっています。 Oracle has deleted their Java 8 builds from their public website. There’s no way for Homebrew to download them for you any longer. If you want
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