content: Install variant jvm

[llighter]

Author: @llighter Reviewer: [Leave blank. I will assign a reviewer.]

Target publish date: <2019-09-08>

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[llighter]

github repo: https://github.com/jenv/jenv jenv site: http://www.jenv.be/

[llighter]

참고: https://jogeum.net/15

[llighter]

In macOS 10.15, I can install jenv with brew. So, until then this post stay under the grid.

[llighter]

I decide to use bash profile to change java version. https://llighter.github.io/install-java-on-mac/

so this. issue close now.