Adopt OpenJDK(GitHub) から入手します。
bionic64:~/src$ git clone https://github.com/AdoptOpenJDK/openjdk-jdk11u.git Cloning into 'openjdk-jdk11u'... remote: Enumerating objects: 880596, done. remote: Counting objects: 100% (880596/880596), done. remote: Compressing objects: 100% (113863/113863), done. remote: Total 880596 (delta 713024), reused 880543 (delta 712973), pack-reused 0 Receiving objects: 100% (880596/880596), 1.95 GiB | 4.87 MiB/s, done. Resolving deltas: 100% (713024/713024), done. Checking out files: 100% (66186/66186), done.
OpenJDK 11 の最新タグを checkout します。
bionic64:~/src$ cd openjdk-jdk11u/ bionic64:~/src/openjdk-jdk11u$ git tag|grep jdk-11.0.1 jdk-11.0.1+0 jdk-11.0.1+1 jdk-11.0.1+10 jdk-11.0.1+11 jdk-11.0.1+12 jdk-11.0.1+13 jdk-11.0.1+2 jdk-11.0.1+3 jdk-11.0.1+4 jdk-11.0.1+5 jdk-11.0.1+6 jdk-11.0.1+7 jdk-11.0.1+8 jdk-11.0.1+9 bionic64:~/src/openjdk-jdk11u$ git checkout jdk-11.0.1+13 -b jdk-11.0.1+13 Switched to a new branch 'jdk-11.0.1+13'