将 java 改写成 beanshell 的经验之谈

下面经验仅仅针对 bsh for android 而谈， PC 上 beanshell 无需这样改。

public class TimeTest  改写为闭包: TimeTest() 

闭包末尾添加语句 return this;

public static void main(String[] args) 改写为: run()

最后添加
timetest = TimeTest(); // call 闭包 == new TimeTest()

timetest.run();

比如: TimeTest.bsh

import java.io.*;

import java.net.*;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.*;

TimeTest()

{

   private static DateFormat fmt = new SimpleDateFormat("yy-MM-dd HH:mm:ss") ;

   /** UTC -> local Time

    */

   public static String getLocalTimeFromUTC(String UTCTime){

      java.util.Date UTCDate = null ;

      String localTimeStr = null ;

      try {

         UTCDate = fmt.parse(UTCTime);

         fmt.setTimeZone(TimeZone.getTimeZone("GMT+8")) ;

         localTimeStr = fmt.format(UTCDate) ;

      } catch (ParseException e) {

         print(e);

      }

      return localTimeStr ;

   }

   run()

   {

      Calendar cal = new GregorianCalendar();

      zone = cal.getTimeZone().getID();

      print(zone);

      Date date1 = new Date();

      time1 = fmt.format(date1);

      print("my 20"+time1);

      try

      {

         Socket s = new Socket("time.nist.gov", 13);

         try

         {

            InputStream inStream = s.getInputStream();

            Scanner in = new Scanner(inStream);

            while (in.hasNextLine())

            {

               String line = in.nextLine();

               // print(line);

               if (line.length() >24){

                  String UTC = line.substring(6,24);

                  print("UTC  "+UTC);

                  print("CN 20"+getLocalTimeFromUTC(UTC));

               }

            }

         }

         finally

         {

            s.close();

         }

      }

      catch (IOException e)

      {

         print(e);

      }

   }

   return this;

}

timetest = TimeTest();

timetest.run();