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1 package org.objectweb.celtix.common.util;
2
3 import java.io.*;
4 import java.net.*;
5
6 public final class StringUtils {
7
8 private StringUtils() {
9 }
10
11 public static String  extract(String string, String startToken, String endToken) {
12 int start = string.indexOf(startToken) + startToken.length();
13 int end = string.lastIndexOf(endToken);
14
15 if (start == -1 || end == -1) {
16 return null;
17 }
18
19 return string.substring(start, end);
20 }
21
22 public static String wrapper(String string, String startToken, String endToken) {
23 StringBuffer sb = new StringBuffer ();
24 sb.append(startToken);
25 sb.append(string);
26 sb.append(endToken);
27 return sb.toString();
28 }
29
30 public static boolean isFileExist(String file) {
31 return new File(file).exists() && new File(file).isFile();
32 }
33
34 public static boolean isFileAbsolute(String file) {
35 return isFileExist(file) && new File(file).isAbsolute();
36 }
37
38 public static URL getURL(String spec) throws MalformedURLException {
39 try {
40 return new URL(spec);
41 } catch (MalformedURLException e) {
42 return new File(spec).toURL();
43 }
44 }
45
46 public static boolean isEmpty(String str) {
47 if (str != null && str.trim().length() > 0) {
48 return false;
49 }
50 return true;
51 }
52 }
53
54 |
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