PrintStream and PrintWriter of java IO

1 package com. io. test;
2
3 import java. io. BufferedReader;
4 import java. io. FileNotFoundException;
5 import java. io. FileOutputStream;
6 import java. io. FileWriter;
7 import java. io. IOException;
8 import java. io. InputStreamReader;
9 import java. io. PrintStream;
10 import java. io. PrintWriter;
11 import java. util. Date;
12
13 import org. junit. Test;
14
15 /**
16 * print bytes
17 * @ author chengjj
18 *
19 */
20 public class TestPrintStreamAndPrinter {
21 @ Test
22 public void test (){
23 try {
24 FileOutputStream OS = new FileOutputStream ("E:/1.txt ");
25 PrintStream ps = new PrintStream (OS );
26 if (ps! = Null ){
27 System. setOut (ps );
28}
29 int ln = 0;
30 for (char I = 0; I <65536; I ++ ){
31 System. out. print (I + "");
32 if (ln ++) % 100 = 0 ){
33 System. out. println ();
34}
35}
36} catch (FileNotFoundException e ){
37 e. printStackTrace ();
38}
39}
40
41 @ Test
42 public void test1 (){
43 try {
44 BufferedReader reader = new BufferedReader (new InputStreamReader (System. in ));
45 FileWriter writer = new FileWriter ("E:/logs. log", true );
46 PrintWriter log = new PrintWriter (writer );
47 String s = reader. readLine ();
48 while (s! = Null ){
49 if (s. equalsIgnoreCase ("exit "))
50 break;
51 System. out. println (s );
52 log. println (s );
53 log. println (new Date ());
54 log. println ("-------------------------------------------");
55 log. flush (); // automatically includes the flush function, but there is nothing to write.
56 s = reader. readLine ();
57}
58 reader. close ();
59 log. close ();
60
61} catch (IOException e ){
62 e. printStackTrace ();
63}
64
65
66}
67
68
69}