oh-my-zsh/lib/jenv.zsh

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# get the java version
function jenv_prompt_info() {
[ -f $HOME/.jenv/version ] || return
local jenv_prompt
jenv_prompt=$(jenv version-name 2>/dev/null)
[[ "${jenv_prompt}x" == "x" ]] && return
jenv_prompt=${jenv_prompt}
echo "${ZSH_THEME_NVM_PROMPT_PREFIX}${jenv_prompt}${ZSH_THEME_NVM_PROMPT_SUFFIX}"
}