java的IO流，实现中文字符的复制

package oyb;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Test {

    public static void main(String[] args) throws IOException{
        int b = 0;
        FileInputStream in = new FileInputStream("D:\\workspace\\test.txt");
        InputStreamReader isr = new InputStreamReader(in,"GB2312");
        BufferedReader br = new BufferedReader(isr);
        
        FileOutputStream os = new FileOutputStream("D:\\workspace\\test2.txt");
        OutputStreamWriter osw = new OutputStreamWriter(os,"GB2312");
        BufferedWriter bw = new BufferedWriter(osw);
        
        while((b = br.read()) != -1) {
//            System.out.print((char) b);
            bw.write(b);
        }
        bw.close();
        br.close();
        
    }
}