1 package demo;
2 import java.io.File;
3 import java.io.FileOutputStream;
4 import java.io.*;
5
6 public class FileOperate {
7
8 public static void main(String[] args) {
9
10 FileOutputStream out = null;
11 FileOutputStream outSTr = null;
12 BufferedOutputStream Buff=null;
13 FileWriter fw = null;
14 int count=50000;//写文件行数
15
16 try {
17 //****************************FileOutputStream保存**************************************
18 out = new FileOutputStream(new File("E:/add0.html"));
19 long begin = System.currentTimeMillis();
20 for (int i = 0; i < count; i++) {
21 out.write("测试java 文件操作".getBytes());
22 }
23 out.close();
24 long end = System.currentTimeMillis();
25 System.out.println("FileOutputStream执行耗时:" + (end - begin) + " 豪秒");
26
27 //****************************BufferedOutputStream保存***********************************
28 outSTr = new FileOutputStream(new File("E:/add1.html"));
29 Buff=new BufferedOutputStream(outSTr);
30 long begin0 = System.currentTimeMillis();
31 for (int i = 0; i < count; i++) {
32 Buff.write("测试java 文件操作".getBytes());
33 }
34 Buff.flush();
35 Buff.close();
36 long end0 = System.currentTimeMillis();
37 System.out.println("BufferedOutputStream执行耗时:" + (end0 - begin0) + " 豪秒");
38
39 //****************************fileWriter保存*********************************************
40 fw = new FileWriter("E:/add2.html");
41 long begin3 = System.currentTimeMillis();
42 for (int i = 0; i < count; i++) {
43 fw.write("测试java 文件操作");
44 }
45 fw.close();
46 long end3 = System.currentTimeMillis();
47 System.out.println("FileWriter执行耗时:" + (end3 - begin3) + " 豪秒");
48
49 //****************************outPutStreamWriter保存**************************************
50 FileOutputStream os = new FileOutputStream(new File("E:/add3.html"));
51 OutputStreamWriter osWriter = new OutputStreamWriter(os, "UTF-8");
52 long begin4 = System.currentTimeMillis();
53 for (int i = 0; i < count; i++) {
54 osWriter.write("测试java 文件操作");
55 }
56 osWriter.close();
57 long end4 = System.currentTimeMillis();
58 os.close();
59 System.out.println("outPutStreamWriter执行耗时:" + (end4 - begin4) + " 豪秒");
60
61 FileWriter fileWritter = new FileWriter(new File("E:/add4.html"));
62 BufferedWriter bufferWritter = new BufferedWriter(fileWritter);
63 long begin5 = System.currentTimeMillis();
64 for (int i = 0; i < count; i++) {
65 bufferWritter.write("测试java 文件操作");
66 }
67 bufferWritter.close();
68 long end5 = System.currentTimeMillis();
69 System.out.println("BufferedWriter执行耗时:" + (end5 - begin5) + " 豪秒");
70 } catch (Exception e) {
71 e.printStackTrace();
72 } finally {
73 try {
74 fw.close();
75 Buff.close();
76 outSTr.close();
77 out.close();
78 } catch (Exception e) {
79 e.printStackTrace();
80 }
81 }
82 }
83
84 }
