java使用BufferedWriter写文件，javabufferedwriter,当要写文本文件时最好使用

java使用BufferedWriter写文件，javabufferedwriter,当要写文本文件时最好使用

当要写文本文件时最好使用Writer类，而不是直接写OutputStream；因为Writer类就是为写文本而设计的。

使用BufferedWriter写入文本时不用讲文本转换成字节数组。在下面的示例代码中我们向文件中写入两行文本。

import java.io.BufferedWriter;import java.io.FileNotFoundException;import java.io.FileWriter;import java.io.IOException;/** * * @author byrx.net */public class Main {    /**     * Prints some data to a file using a BufferedWriter     */    public void writeToFile(String filename) {        BufferedWriter bufferedWriter = null;        try {            //Construct the BufferedWriter object            bufferedWriter = new BufferedWriter(new FileWriter(filename));            //Start writing to the output stream            bufferedWriter.write("Writing line one to file");            bufferedWriter.newLine();            bufferedWriter.write("Writing line two to file");        } catch (FileNotFoundException ex) {            ex.printStackTrace();        } catch (IOException ex) {            ex.printStackTrace();        } finally {            //Close the BufferedWriter            try {                if (bufferedWriter != null) {                    bufferedWriter.flush();                    bufferedWriter.close();                }            } catch (IOException ex) {                ex.printStackTrace();            }        }    }    /**     * @param args the command line arguments     */    public static void main(String[] args) {        new Main().writeToFile("myFile.txt");    }}

执行上述代码后文件中的文本如下:

Writing line one to fileWriting line two to file

注意使用BufferedWriter一定要在finally中flush()并close().