FileOutputStream和FileInputStream

package one.string;



import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.UnsupportedEncodingException;



public class TestString 

{

    public static void main(String[] args) 

    {        

        try 

        {            

            File file = new File("F:\\test1.txt");

            if(!file.exists())

            {

                file.createNewFile();

            }

            FileOutputStream fos = new FileOutputStream(file, true);

            fos.write("我很好，谢谢！and you？".getBytes("GBK"));

            fos.close();

            FileInputStream fis = new FileInputStream(file);

            byte[] bt = new byte[1024];

            int len = fis.read(bt);

            fis.close();

            System.out.println(new String(bt,0,len));

            

        }

        catch (FileNotFoundException e) 

        {

            e.printStackTrace();

        }

        catch (IOException e) 

        {

            e.printStackTrace();

        }

        

    }

}