Re: Unicode chinese

From:
"Crouchez" <blah@bllllllahblllbllahblahblahhh.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 29 Aug 2007 16:50:41 GMT
Message-ID:
<BthBi.21520$g.10720@fe1.news.blueyonder.co.uk>
"Roedy Green" <see_website@mindprod.com.invalid> wrote in message
news:l3mad3pn3a7fka5lne6gbrb1srjrutpm47@4ax.com...

On Wed, 29 Aug 2007 03:47:16 GMT, "Crouchez"
<blah@bllllllahblllbllahblahblahhh.com> wrote, quoted or indirectly
quoted someone who said :

String chinese = "\u4e2d\u5c0f";
System.out.println(chinese.getBytes().length);

Why does this return 2?


I modified your code a little, so it will make the problem clear:

public class Chinese
  {
  /**
   * test harness
   *
   * @param args not used
   */
  public static void main ( String[] args )
     {
     System.out.println( System.getProperty( "file.encoding" ));
     String chinese = "\u4e2d\u5c0f";
     byte[] b = chinese.getBytes();
     for ( int i=0; i<b.length; i++ )
        {
        System.out.println( b[i]);
        }
     // prints
     // Cp1252
     // 63
     // 63
     // in other words ??. Those tho chars are not available in your
default encoding.
     }
  }

I further modified you code to choose the encoding explicitly:

import java.io.UnsupportedEncodingException;
public class Chinese
  {
  /**
   * test harness
   *
   * @param args not used
   */
  public static void main ( String[] args ) throws
UnsupportedEncodingException
  {
     System.out.println( System.getProperty( "file.encoding" ));
     String chinese = "\u4e2d\u5c0f";
     // explicit choice of encoding, designed to support Chinese.
     byte[] b = chinese.getBytes( "Big5-HKSCS" );
     for ( int i=0; i<b.length; i++ )
        {
        System.out.println( 0xff & b[i]);
        }
     // prints
     // Cp1252
     // 164
     // 164
     // 164
     // 112 more like you would expect.
  }
  }

--
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com


Why have you done an AND on this?
System.out.println( 0xff & b[i]);

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