http中文乱码的问题?

今用这样一段代码从网络上获取一段中文信息,但是到手机上后全是乱码,处理过这样问题的朋友帮个忙。
public String DownChar(String url)
{
String result = "";
HttpConnection conn = null;
InputStream is = null;
InputStreamReader isr = null;
try
{
conn = (HttpConnection)Connector.open(url);
is = conn.openInputStream();
isr = new InputStreamReader(is);
int ic;
while((ic = is.read()) != -1)
{
result += (char)ic;
}
}catch(Exception ioe){}
finally
{
try
{
if(conn != null)
conn.close();
}catch(Exception e){}
}
}