how to change Unicode to SJIS?

Question

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();    }
}

Answer 1

Java通常会根据本机的语言自动决定编码的类型