___@kubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic ___@kubuntu:~$ java --version opensdk 11.0.1 2018-10-16 OpenJDK Runtime Environment 18.9 (build 11.0.1+13) OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode) ___@kubuntu:~$ javac --version javac 11.0.1 openjdkをインストールする 2018/11/18現在、aptでopenjdk-