text: #// usage: jjs -scripting weather.js
  
  /*
   * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   - Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *
   *   - Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   *
   *   - Neither the name of Oracle nor the names of its
   *     contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  // Simple nashorn example showing back-quote exec process,
  // JSON and Java8 streams
  
  var Arrays = Java.type("java.util.Arrays");
  
  // use curl to download JSON weather data from the net
  // use backquote -scripting mode syntax to exec a process
  
  `curl http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&amp;mode=json&amp;units=metric&amp;cnt=7`;
  
  // parse JSON
  var weather = JSON.parse($OUT);
  
  // pull out humidity as array
  var humidity = weather.list.map(function(curVal) {
      return curVal.humidity;
  })
  
  // Stream API to print stat
  print("Humidity");
  print(Arrays["stream(int[])"](humidity).summaryStatistics());
  
  // pull maximum day time temperature
  var temp = weather.list.map(function(curVal) {
      return curVal.temp.max;
  });
  
  // Stream API to print stat
  print("Max Temperature");
  print(Arrays["stream(double[])"](temp).summaryStatistics());
  