java: experiment with SDKMAN

fish/config.fish

@@ -5,10 +5,6 @@ set -gx LANG en_US.UTF-8
 set -gx PAGER 'less --tabs=4 --jump-target=.25 -iRFM'
 set -gx SBT_OPTS '-Dsbt.supershell=false'
 
-if test -x /usr/libexec/java_home
-    set -gx JAVA_HOME (/usr/libexec/java_home -v 1.8)
-end
-
 if command -q diff-so-fancy
     set -gx GIT_PAGER "diff-so-fancy | $PAGER"
 end

fish/fish_plugins

@@ -5,3 +5,4 @@ oh-my-fish/plugin-sublime
 oakninja/MakeMeFish
 laughedelic/fish_logo
 jethrokuan/z
+reitzig/sdkman-for-fish@v1.4.0