Added class and os alternates

.oh-my-zsh/plugins/jenv/jenv.plugin.zsh

@@ -0,0 +1,30 @@
+jenvdirs=("$HOME/.jenv" "/usr/local" "/usr/local/jenv" "/opt/jenv")
+
+FOUND_JENV=0
+for jenvdir in $jenvdirs; do
+    if [[ -d "${jenvdir}/bin" ]]; then
+        FOUND_JENV=1
+        break
+    fi
+done
+
+if [[ $FOUND_JENV -eq 0 ]]; then
+    if (( $+commands[brew] )) && jenvdir="$(brew --prefix jenv)"; then
+        [[ -d "${jenvdir}/bin" ]] && FOUND_JENV=1
+    fi
+fi
+
+if [[ $FOUND_JENV -eq 1 ]]; then
+    export PATH="${jenvdir}/bin:$PATH"
+    eval "$(jenv init - zsh)"
+
+    function jenv_prompt_info() { jenv version-name 2>/dev/null }
+
+    if [[ -d "${jenvdir}/versions" ]]; then
+        export JENV_ROOT=$jenvdir
+    fi
+else
+    function jenv_prompt_info() { echo "system: $(java -version 2>&1 | cut -f 2 -d ' ')" }
+fi
+
+unset jenvdir jenvdirs FOUND_JENV