How to change Unicode to SJIS or GBK2312?
I would you can give me a example.

import java.io.*;
public class Hello{
    public static void main(String[] args)throws IOException{
        String str = "照相机";
        OutputStreamWriter osw = new OutputStreamWriter(
            new FileOutputStream("c:\a.txt"),"BIG5");//用BIG5编码
        osw.write(str,0,str.length());
        osw.close();
        osw = new OutputStreamWriter(
            new FileOutputStream("c:\b.txt"),"GB2312");//用GB2312编码
        osw.write(str,0,str.length());
        osw.close();

    }
}