字节流的操作演示

1.将一个文本通过字符流操作复制到指定目录下

2.将一个文本通过字节流操作复制到指定目录下

3.将一个Mp3文件通过字节流操作方式复制到指定目录下，并加入缓冲技术

4.简写复制Mp3文件的代码 



import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
//----------------------------------------------------------------------------------------------------------------------
public class FileByteStreamDemo 
{
  public static void main(String[] args) 
  {
    TextCopy();
    TextCopy2();
    Mp3Copy3();
    Mp3Copy4();
  }
  //----------------------------------------------------------------------------------------------------------------------
  private static void Mp3Copy4() 
  {
    // 将Copy  Mp3  文件的代码简写
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    try {
      bis=new BufferedInputStream(new FileInputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\陈楚生-黄金时代.mp3"));
      bos = new BufferedOutputStream(new FileOutputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\2ByteStreamCopyMp3.mp3"));
      int len = 0;
      byte[] b = new byte[1024*1024];
      while((len=bis.read(b))!=-1)
      {
        bos.write(b);
        bos.flush();
      }
    } catch (FileNotFoundException e) 
    {
      e.printStackTrace();
    } catch (IOException e) 
    {
      e.printStackTrace();
    }finally
    {
      try 
      {
        bos.close();
      } catch (IOException e) 
      {
        e.printStackTrace();
      }
      try 
      {
        bis.close();
      } catch (IOException e)
             {
        e.printStackTrace();
      }
    }
    
  }
  
  
//----------------------------------------------------------------------------------------------------------------------  
<h2><span style="font-family:FangSong_GB2312;">3.将一个Mp3文件通过字节流操作方式复制到指定目录下，并加入缓冲技术</span></h2>
private static void Mp3Copy3() {
    // 加入字节的缓冲区
    //向指定目录下Copy一个mp3文件
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    FileInputStream fis =null;
    FileOutputStream fos = null;
    try {
      fis = new FileInputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\陈楚生-黄金时代.mp3");
      bis = new BufferedInputStream(fis);
      fos = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\ByteStreamCopyMp3.mp3");
      bos = new BufferedOutputStream(fos);
      int len = 0;
      byte[] b = new byte[1024*1024];
      while((len=bis.read(b))!=-1)
      {
        bos.write(b);
        bos.flush();
      }
    } catch (FileNotFoundException e) 
    {
      e.printStackTrace();
    } catch (IOException e) 
    {
      e.printStackTrace();
    }finally
    {
      try 
      {
        bis.close();
      } catch (IOException e) 
      {
        e.printStackTrace();
      }
      try {
        bos.close();
      } catch (IOException e) 
      {
        e.printStackTrace();
      }
    }
  }
  //----------------------------------------------------------------------------------------------------------------------
<h2><span style="font-family:FangSong_GB2312;">2.将一个文本通过字节流操作复制到指定目录下</span></h2>
private static void TextCopy2() {
    // 使用字节流将一个文本复制到指定的目录下
    FileInputStream fis = null;
    FileOutputStream fos = null;
    try 
    {
      fis = new FileInputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\初三化学复习资料.doc");
      fos = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\测试文件夹\\ByteStreamCopyText.doc");
      int len = 0;
      byte[] b = new byte[1024];
      while((len=fis.read(b))!=-1)
      {
        fos.write(b);
          fos.flush();
          
      }
    } catch (FileNotFoundException e) 
    {
      e.printStackTrace();
    } catch (IOException e) 
    {
      e.printStackTrace();
    }finally
    {
      try
      {
        fos.close();
      } catch (IOException e1) 
      {
        e1.printStackTrace();
      }
      try 
      {
        fis.close();
      } catch (IOException e) 
      
      {
        e.printStackTrace();
      }
    }
  }
  //----------------------------------------------------------------------------------------------------------------------
  <h2><span style="font-family:FangSong_GB2312;">
</span></h2><h2>
</h2>
<h2 style="font-family: monospace; white-space: pre;"><span style="font-family: FangSong_GB2312;">1.将一个文本通过字符流操作复制到指定目录下</span></h2>
private static void TextCopy() {
    // 使用字符流将一个文本复制到指定目录下
    //创建一个缓冲区
    BufferedReader br = null;
    BufferedWriter bw = null;
    try {
      br= new BufferedReader(new FileReader("C:\\Users\\Administrator\\Desktop\\测试文件夹\\初三化学复习资料.doc"));
      bw = new BufferedWriter(new FileWriter("C:\\Users\\Administrator\\Desktop\\测试文件夹\\Copy复习资料.doc"));
      String len = null;
      while((len=br.readLine())!=null)
      {
        System.out.println(len);
        bw.write(len);
        bw.newLine();
        bw.flush();
        
      }
    } catch (FileNotFoundException e) 
    {
      e.printStackTrace();
    } catch (IOException e) 
    {
      e.printStackTrace();
    }finally
    {
      try 
      {
        bw.close();
      } catch (IOException e) 
      {
        e.printStackTrace();
      }
      try 
      {
        br.close();
      } catch (IOException e) 
      {
        e.printStackTrace();
      }
    }
    
  }

}




运行程序：



java基础—IO流——字节流的操作演示_IO流