StringUtil


1   /*
2    * Copyright (c) 2002-2003 by OpenSymphony
3    * All rights reserved.
4    */
5   package com.opensymphony.oscache.util;
6   
7   import java.util.ArrayList  ;
8   import java.util.List  ;
9   
10  /**
11   * Provides common utility methods for handling strings.
12   *
13   * @author <a HREF="&#109;a&#105;&#108;&#116;&#111;:chris&#64;swebtec.&#99;&#111;&#109;">Chris Miller</a>
14   */
15  public class StringUtil {
16      
17      /**
18       * Splits a string into substrings based on the supplied delimiter
19       * character. Each extracted substring will be trimmed of leading
20       * and trailing whitespace.
21       *
22       * @param str The string to split
23       * @param delimiter The character that delimits the string
24       * @return A string array containing the resultant substrings
25       */
26      public static final List   split(String   str, char delimiter) {
27          // return no groups if we have an empty string
28          if ((str == null) || "".equals(str)) {
29              return new ArrayList  ();
30          }
31  
32          ArrayList   parts = new ArrayList  ();
33          int currentIndex;
34          int previousIndex = 0;
35  
36          while ((currentIndex = str.indexOf(delimiter, previousIndex)) > 0) {
37              String   part = str.substring(previousIndex, currentIndex).trim();
38              parts.add(part);
39              previousIndex = currentIndex + 1;
40          }
41  
42          parts.add(str.substring(previousIndex, str.length()).trim());
43  
44          return parts;
45      }
46      
47      /**
48       * @param s the string to be checked
49       * @return true if the string parameter contains at least one element 
50       */
51      public static final boolean hasLength(String   s) {
52          return (s != null) && (s.length() > 0);
53      }
54      
55  }
56
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags