Java BufferedInputStream和BufferedOutputStream示例

BufferedInputStream和BufferedOutputStream分别使用内部字节数组(也称为缓冲区)来存储读写数据。 缓冲流通常比类似的非缓冲流更有效。

下面是一个演示如何使用BufferedInputStream的示例。

文件：BufferedInputStreamExample.java –

package com.yiibai.tutorial.io;  import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException;  /**  * @author yiibai BufferedInputStreamExample.java Nov 5 2016  */ public class BufferedInputStreamExample {     public static void main(String[] args) {         File file = new File("file.txt");         FileInputStream fileInputStream = null;         BufferedInputStream bufferedInputStream = null;          try {             fileInputStream = new FileInputStream(file);             bufferedInputStream = new BufferedInputStream(fileInputStream);             // Create buffer             byte[] buffer = new byte[1024];             int bytesRead = 0;             while ((bytesRead = bufferedInputStream.read(buffer)) != -1) {                 System.out.println(new String(buffer 0 bytesRead));             }         } catch (IOException e) {             e.printStackTrace();         } finally {             try {                 if (fileInputStream != null) {                     fileInputStream.close();                 }                 if (bufferedInputStream != null) {                     bufferedInputStream.close();                 }             } catch (IOException e) {                 e.printStackTrace();             }          }     } } 

执行上面示例代码，得到以下结果：

This is an example of reading data from file using BufferedInputStream. 

以下是BufferedOutputStream的演示示例。

文件：BufferedOutputStreamExample.java –

package com.yiibai.tutorial.io;  import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException;  /**  * @author yiibai  * BufferedOutputStreamExample.java  * Nov 5, 2016  */ public class BufferedOutputStreamExample {     public static void main(String[] args) {         File file=new File("outfile.txt");         FileOutputStream fileOutputStream=null;         BufferedOutputStream bufferedOutputStream=null;         try {             fileOutputStream=new FileOutputStream(file);             bufferedOutputStream=new BufferedOutputStream(fileOutputStream);             bufferedOutputStream.write("This is an example of writing data to a file".getBytes());             bufferedOutputStream.write(" using BufferedOutputStream".getBytes());             bufferedOutputStream.flush();          } catch (IOException e) {             e.printStackTrace();         }finally {             try {                 if(fileOutputStream!=null){                     fileOutputStream.close();                 }                 if(bufferedOutputStream!=null){                     bufferedOutputStream.close();                 }             } catch (IOException e) {                 e.printStackTrace();             }         }     } } 

执行上面示例代码，得到以下结果：

This is an example of writing data to a file using BufferedOutputStream