よく忘れるので、メモ
$ sudo yum install java-1.8.0-openjdk-devel.x86_64 $ sudo alternatives --config java $ /usr/bin/java -version openjdk version "1.8.0_252" OpenJDK Runtime Environment (build 1.8.0_252-b09) OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode) $ sudo alternatives --config java $ dirname $(readlink $(readlink $(which java))) /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.252.b09-2.amzn2.0.1.x86_64/jre/bin $ export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.252.b09-2.amzn2.0.1.x86_64
