java基础—IO流——字节流的操作演示

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：