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## org.apache.commons.codec
Class StringEncoderComparator

    java.lang.Object
      org.apache.commons.codec.StringEncoderComparator

All Implemented Interfaces:
  Comparator

    public class StringEncoderComparator

extends Object
implements Comparator

Compares Strings using a `StringEncoder`. This comparator is used to sort Strings by an encoding scheme such as Soundex, Metaphone, etc. This class can come in handy if one need to sort Strings by an encoded form of a name such as Soundex.

Version:
  $Id: StringEncoderComparator.java 1201520 2011-11-13 21:36:18Z ggregory $
Author:
  Apache Software Foundation

Constructor Summary
`StringEncoderComparator()` Deprecated. Creating an instance without a `StringEncoder` leads to a `NullPointerException`. Will be removed in 2.0.
`StringEncoderComparator(StringEncoder stringEncoder)` Constructs a new instance with the given algorithm.

Method Summary
`int` | `compare(Object o1, Object o2)` Compares two strings based not on the strings themselves, but on an encoding of the two strings using the StringEncoder this Comparator was created with.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface java.util.Comparator
`equals`

Constructor Detail

### StringEncoderComparator

    public StringEncoderComparator()

  Deprecated. Creating an instance without a `StringEncoder` leads to a `NullPointerException`. Will be removed in 2.0.

  Constructs a new instance.

### StringEncoderComparator

    public StringEncoderComparator(StringEncoder stringEncoder)

  Constructs a new instance with the given algorithm.

  Parameters:
    `stringEncoder` - the StringEncoder used for comparisons.

Method Detail

### compare

    public int compare(Object o1,
                       Object o2)

  Compares two strings based not on the strings themselves, but on an encoding of the two strings using the StringEncoder this Comparator was created with. If an `EncoderException` is encountered, return `0`.

  Specified by:
    `compare` in interface `Comparator`
  Parameters:
    `o1` - the object to compare
    `o2` - the object to compare to
  Returns:
    the Comparable.compareTo() return code or 0 if an encoding error was caught.
  See Also:
    `Comparable`

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