Java class auto-compiler

java-watcher.sh

#!/bin/bash
#
# Inotify Java Watcher
# by Mike Green <mike.is.green@gmail.com>
#
# Automatically compiles Java classes when their files are saved.
#
# = Installation: Save this script into the root folder of your Java projects, then run:
#   $ cd whatever-your-folder-is-called && chmod +x java-watcher.sh
#
# = Usage:
#   $ ./java-watcher.sh
#
# Note: this script requires the "inotify-tools" package. Install it by running:
#   $ sudo apt-get install inotify-tools

cyan="\e[0;36m"
green="\e[01;32m"
color_reset="\e[0m"

if ! which inotifywait >> /dev/null; then
  echo "Cannot find inotifywait!"
  exit 1
fi

if ! which javac >> /dev/null; then
  echo "Cannot find javac!"
  exit 1
fi

inotifywait -mr --timefmt '%m/%d/%Y %H:%M:%S' --format '%T %w %f' -e close_write $PWD | while read date time dir file; do
  if [[ $file == *.java ]]; then
    echo -e "[${date} ${time}] - ${cyan}Compiling ${file}:${color_reset}"
    javac "$PWD/$file"

    finish_date=$(date "+%m/%d/%Y %H:%M:%S")
    echo -e "[${finish_date}] - ${green}Done!${color_reset}"
  fi
done