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Commons Lang

Wiki Markup\[http://jakarta.apache.org/commons/lang Lang\] aims to provide:

• Comprehensive String handling utilities
• Enumerated types (pre JDK 1.5)
• Nested exceptions (pre JDK 1.4)
• Builders to create hashCode, equals, toString and compareTo methods
• Utilities for Object, Date and Numbers
  

...

The Javadoc of the latest version is \[http://jakarta.apache.org/commons/lang/api/index.html available\](2.1) is available.

The Javadoc of the CVS version (development) is available.

Development plan for 2.

...

2

1. Bug fixes
2. StrTokenizer
3. StrBuilder
4. VariableFormatter/interpolator - 18962
   
   

Other ideas

1. Wiki Markup
   [

   StringUtils].ordinalIndexOf() 2. [StringBuffer] replacement 3. Mutable Number classes 4. [StringTokenizer] replacement: *(DONE - Tokenizer)* 5. \[

   21663|http://issues.apache.org/bugzilla/show_bug.cgi?id=21663] \[lang\] Add support in [ToStringStyle] for [DateFormat]. - *Grows quickly into commons-convert*

2. Wiki Markup
   [27643|http://issues.apache.org/bugzilla/show_bug.cgi?id=

   29294 29294\

   27643] \[lang\]\[

   PATCH

   patch\]

   Fix the Fraction class

   [ClassUtils].newInstance method - *Seems unnecessary*

3. Wiki Markup
   [29149|http://issues.apache.org/bugzilla/show_bug.cgi?id=29149]

   Patch being reviewed.* 5. 15082

   \[lang\] [StringEscapeUtils]

   elapsed time formatting utility method

   .unescapeHtml() doesn't handle an empty entity - *

   DurationFormatUtils.

   Empty

   Needs

   entity

   finishing.* 5. 18962 \[lang\] New Method: getSubstitutedValues( String, Map ) - *Patch supplied. Need to resurrect Interpolator from Util, merge with this patch and decide if it makes sense.* 5. 19331

   is in fact illegal HTML, so need to decide if we should ignore. Current behaviour seems acceptable as we're not in the work with bad HTML market.*

4. Wiki Markup
   [26659|http://issues.apache.org/bugzilla/show_bug.cgi?id=26659] \[lang\]

   General

   add

   case:

   method

   infinite

   to

   loop:

   [

   ToStringBuilder

   DateUtils]

   .reflectionToString
   -

   to

   *Need

   get

   to

   the

   confirm

   distance

   whether

   between

   this

   2

   is

   dates

   a

   -

   bug

   *Mainly

   5.

   replicated

   20015

   by

   \

   [

   lang\

   DurationFormatUtils],

   Make Entities public and unit test - *Entities. Needs finishing.* 5. 21333 Add [TimeoutController] - *Class in [HttpClient]. Needs evaluating.* 5. 21663 \[lang\] Add support in [ToStringStyle] for [DateFormat]. 5. 22172

   or non-obvious*

5. Wiki Markup
   [29692|http://issues.apache.org/bugzilla/show_bug.cgi?id=29692] \[lang\] String indentation feature request - *Needs design as a non-simple problem*

6. Wiki Markup
   [22172|http://issues.apache.org/bugzilla/show_bug.cgi?id=22172] \[lang\] [DateUtils].parseCVS behavior parsing "h:mm z"

   5. 22692 [StringUtils].split ignores empty items 5. 22717 \[lang\] [MutableNumbers]

   - *

   Matt

   Moved

   Hawthorne and Geronimo have implementations.* 5. 23749 \[lang\] \[PATCH\] [NumberRange] - adds inclusive and exclusive end points 5. 24910 new [StringUtils].split methods that split on the whole separator string 5. 25560 [DateUtils].truncate() is off by one hour when using a date in DST switch 'zone' 5. 26056 \[lang\] Add methods to [ArrayUtils]: add at end and insert-like ops 5. 26297

   to sandbox*

7. Wiki Markup
   [26297|http://issues.apache.org/bugzilla/show_bug.cgi?id=26297] \[lang\] [BitSetUtils] class, toIndexArray and fromIndexArray

   5. 26659 \[lang\] add method to [DateUtils] to get the distance between 2 dates 5. 26922 \[lang\] public static boolean [DateUtils].equals(Date dt1, Date dt2) ? 5. 27640 \[lang\]\[patch\] [ClassUtils].primitivesToWrappers method 5. 27643 \[lang\]\[patch\] [ClassUtils].newInstance method 5. 27778 \[lang\] add remove methods to [ArrayUtils] 5. 27876 \[lang\] [ReflectionToStringBuilder].toString(null) throws exception by design 5. 27877 \[lang\]\[patch\] Make [ClassUtils] methods null-safe and not throw an IAE. 5. 29149 \[lang\] [StringEscapeUtils].unescapeHtml() doesn't handle an empty entity - *Empty entity is in fact illegal HTML, so need to decide if we should ignore* 5. 25227 \[lang\] [StringEscapeUtils].unescapeHtml() doesn't handle hex entities - *DONE* 5. 29163 Make [StopWatch] validate state transitions - *Coding needed*

Fixed list

(meaning closed in Bugzilla)

2. 21333 Add TimeoutController - Class in HttpClient. Leaving til 3.0 as not much movement on it

3. Wiki Markup
   [30674|http://issues.apache.org/bugzilla/show_bug.cgi?id=30674] Support [HttpClient]'s [DateParser] class - *This is basically a Date parseDate(String dateValue, String\[\] dateFormats) method.*

4. LocaleUtils - including toLocale(String,String)
5. CloneUtils - multiple ways to clone an object
   

Articles

This article http://www.devx.com/Java/Article/29392/0/page/6 discusses some of the interesting classes in Commons Lang with real world examples. Wiki Markup 5. 27592 \[lang\] [WordUtils] capitalize improvement - *DONE* 5. 23557 [WordUtils].capitalizeFully(String str) should take a delimiter - *DONE*