jhome_mac.sh

# add to your ~/.bashrc either direct content of this file or the following line:
# . /path/to/this/file.sh

jhome() {
  java_home="$(/usr/libexec/java_home -f -v "$@")"
  
  local err_handler='{ printf "%s\n" "ERROR!!!"; ls -ld "${java_home}"{,/bin,/bin/java}; /usr/libexec/java_home -V; return 1; }'
  
  { [ -n "${java_home}" ] && [ -d "${java_home}" ] && [ -d "${java_home}/bin" ] && [ -f "${java_home}/bin/java" ] && [ -x "${java_home}/bin/java" ]; } || eval "${err_handler}"
  
  export JAVA_HOME="${java_home}"
  export PATH="${JAVA_HOME}/bin:${PATH}"
  
  echo "JAVA_HOME: ${JAVA_HOME}"
  echo '`java -version`:'; java -version || eval "${err_handler}"
}