java 写文件解析

import java.io.File;   



import java.io.FileOutputStream;   



import java.io.*;   



public class FileTest {   



    public FileTest() {   



    }   



    public static void main(String[] args) {   



        FileOutputStream out = null;   



        FileOutputStream outSTr = null;   



        BufferedOutputStream Buff=null;   



        FileWriter fw = null;   



        int count=1000;//写文件行数   



        try {   



            out = new FileOutputStream(new File(“C:/add.txt”));   



            long begin = System.currentTimeMillis();   



            for (int i = 0; i < count; i++) {   



                out.write(“测试java 文件操作\r\n”.getBytes());   



            }   



            out.close();   



            long end = System.currentTimeMillis();   



            System.out.println(“FileOutputStream执行耗时:” + (end - begin) + ” 豪秒”);   



            outSTr = new FileOutputStream(new File(“C:/add0.txt”));   



             Buff=new BufferedOutputStream(outSTr);   



            long begin0 = System.currentTimeMillis();   



            for (int i = 0; i < count; i++) {   



                Buff.write(“测试java 文件操作\r\n”.getBytes());   



            }   



            Buff.flush();   



            Buff.close();   



            long end0 = System.currentTimeMillis();   



            System.out.println(“BufferedOutputStream执行耗时:” + (end0 - begin0) + ” 豪秒”);   



            fw = new FileWriter(“C:/add2.txt”);   



            long begin3 = System.currentTimeMillis();   



            for (int i = 0; i < count; i++) {   



                fw.write(“测试java 文件操作\r\n”);   



            }   



                        fw.close();   



            long end3 = System.currentTimeMillis();   



            System.out.println(“FileWriter执行耗时:” + (end3 - begin3) + ” 豪秒”);   



        } catch (Exception e) {   



            e.printStackTrace();   



        }   



        finally {   



            try {   



                fw.close();   



                Buff.close();   



                outSTr.close();   



                out.close();   



            } catch (Exception e) {   



                e.printStackTrace();   



            }   



        }   



    }   



}