package io;import java.io.BufferedReader;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;public class TestTransform1 {    public static void main(String[] args) {        try {            //转换流，字节流-->字符流            OutputStreamWriter psw = new OutputStreamWriter(                    new FileOutputStream("f:\\share\\j2se\\IO\\char.txt",true));//true表示追加到以前的内容后                                    psw.write("北京市沙河，明天是端午节");//            System.out.println(psw.getEncoding());//得到字符编码            psw.flush();            psw.close();                        //读取写入的数据            InputStreamReader isr = new InputStreamReader(new FileInputStream("f:\\share\\j2se\\IO\\char.txt"));            BufferedReader br = new BufferedReader(isr);            String s = null;                s = br.readLine();            System.out.println(s);                        br.close();            //修改编码            psw = new OutputStreamWriter(new FileOutputStream("f:\\share\\j2se\\IO\\char.txt"),"ISO8859_1");                    psw.write("aaabbbccc");            System.out.println(psw.getEncoding());            psw.flush();            psw.close();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }    }}