# File lib/buildr/core/util.rb, line 333
  def to_java_properties
    keys.sort.map { |key|
      value = self[key].gsub(/[\t\r\n\f\\]/) { |escape| "\\" + {"\t"=>"t", "\r"=>"r", "\n"=>"n", "\f"=>"f", "\\"=>"\\"}[escape] }
      "#{key}=#{value}"
    }.join("\n")
  end