Java BufferedReader和BufferedWriter示例

BufferedReader和BufferedWriter分别使用内部缓冲区来存储数据，同时进行读写。BufferedReader提供了一个新方法readLine()，它读取一行并返回一个String(不带行分隔符)。

以下示例显示了BufferedReader和BufferedWriter的使用。

文件：BufferedReaderWriterExample.java –

package com.yiibai.tutorial.io;  import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException;  /**  * @author yiibai  */ public class BufferedReaderWriterExample {     public static void main(String[] args) {         File file = new File("file.txt");          /*Writing file using BufferedWriter*/         FileWriter fileWriter = null;         BufferedWriter bufferedWriter =null;         try {             fileWriter=new FileWriter(file);             bufferedWriter =new BufferedWriter(fileWriter);             bufferedWriter.write("This is an example /n");             bufferedWriter.write("of using BufferedWriter and /n");             bufferedWriter.write("BufferedReader.");             bufferedWriter.flush();         } catch (IOException e) {             e.printStackTrace();         }finally {             try {                 if(fileWriter!=null){                     fileWriter.close();                 }                 if(bufferedWriter!=null){                     bufferedWriter.close();                 }             } catch (IOException e) {                 e.printStackTrace();             }         }          /*Reading file using BufferedReader*/         FileReader fileReader=null;         BufferedReader bufferedReader=null;         try {             fileReader =new FileReader(file);             bufferedReader=new BufferedReader(fileReader);             String line=null;             while((line=bufferedReader.readLine())!=null){                 System.out.println(line);             }         } catch (IOException e) {             e.printStackTrace();         }finally {             try {                 if(fileReader!=null){                     fileReader.close();                 }                 if(bufferedReader!=null){                     bufferedReader.close();                 }             } catch (IOException e) {                 e.printStackTrace();             }         }     } } 

执行上面示例代码，得到以下结果(文件：file.txt)：

This is an example  of using BufferedWriter and  BufferedReader.