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1 package net.nutch.net.protocols;
2
3 import java.util.Calendar  ;
4 import java.util.Date ;
5 import java.util.HashMap ;
6 import java.util.Locale ;
7 import java.util.TimeZone ;
8 import java.text.SimpleDateFormat ;
9 import java.text.ParseException ;
10
11
18 public class HttpDateFormat {
19
20 protected static SimpleDateFormat format =
21 new SimpleDateFormat ("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.US);
22
23
26 static {
27 format.setTimeZone(TimeZone.getTimeZone("GMT"));
28 }
29
30
33
36
54
57 public static String toString(Date date) {
58 String string;
59 synchronized (format) {
60 string = format.format(date);
61 }
62 return string;
63 }
64
65 public static String toString(Calendar cal) {
66 String string;
67 synchronized (format) {
68 string = format.format(cal.getTime());
69 }
70 return string;
71 }
72
73 public static String toString(long time) {
74 String string;
75 synchronized (format) {
76 string = format.format(new Date (time));
77 }
78 return string;
79 }
80
81 public static Date toDate(String dateString) throws ParseException {
82 Date date;
83 synchronized (format) {
84 date = format.parse(dateString);
85 }
86 return date;
87 }
88
89 public static long toLong(String dateString) throws ParseException {
90 long time;
91 synchronized (format) {
92 time = format.parse(dateString).getTime();
93 }
94 return time;
95 }
96
97 public static void main(String [] args) throws Exception {
98 HttpDateFormat format = new HttpDateFormat();
99
100 Date now = new Date (System.currentTimeMillis());
101
102 String string = format.toString(now);
103
104 long time = format.toLong(string);
105
106 System.out.println(string);
107 System.out.println(format.toString(time));
108 }
109
110 }
111 |
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