Problem with URL encoding conversion

Hi all,

I am working on an I18N application and in my application one component sends the request to another component and then this component fetch that requet and extract the query-parameters from the request (HTTP request).

Now the problem is that the input to first component can be given in one of the 5 character encodings:-

UTF-8

Shift_JIS

EUC_JP

Windows-31J

ISO-2022-JP

I have created a test program that convert the encoded URL from one character encoding to another character encoding. It is working successfully for the above 4 encodings but for the last encoding that is "ISO-2022-JP" this fails. The test programs is: -

import java.io.*;

import java.util.*;

import java.net.URLDecoder;

import java.net.URLEncoder;

class JPtoUTF8{

publicstaticvoid main(String[] args){

try{

String shift_jis ="%82%C8%82%A4%82%8B%82%E8";// This is Shift_JIS encoded URL

String iso2022jp ="%1B%24B%24J%24%26%23k%24j%1B%28B";// This is ISO-2022-JP encoded URL

String utf8 ="%E3%81%AA%E3%81%86%EF%BD%8B%E3%82%8A";// This is the result that should be obtained

String decodedShift_jis = URLDecoder.decode(shift_jis,"Shift_JIS");

String decodedIso2022jp = URLDecoder.decode(iso2022jp,"ISO-2022-JP");

String encodedShift_JIS = URLEncoder.encode(decodedShift_jis,"UTF-8");

String encodedIso2022jp = URLEncoder.encode(decodedIso2022jp,"UTF-8");

System.out.println("shift_jis= "+shift_jis);

System.out.println("encodedShift_JIS = "+encodedShift_JIS);

System.out.println("iso2022jp= "+iso2022jp);

System.out.println("encodedIso2022jp = "+encodedIso2022jp);

}catch(Exception e){

e.printStackTrace();

}

}

}

I am using jdk5 for this application.

Please give your valuable suggestions.

Thanks in advance.

[2823 byte] By [Prashant001a] at [2007-10-3 3:32:54]