Package org.apache.tools.ant.filters

# Class UniqFilter

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.filters.TokenFilter.ChainableReaderFilter
org.apache.tools.ant.filters.UniqFilter

All Implemented Interfaces:
  `Cloneable`, `ChainableReader`, `TokenFilter.Filter`

public class UniqFilter extends TokenFilter.ChainableReaderFilter
Like the Unix uniq(1) command, only returns tokens that are different from their ancestor token.

This filter is probably most useful if used together with a sortfilter.

Since:
  Ant 1.8.0

## Field Summary

### Fields inherited from class org.apache.tools.ant.ProjectComponent

`description, location, project`

## Constructor Summary

Constructors
Constructor
Description
`UniqFilter()`

## Method Summary

Modifier and Type
Method
Description
`String`
`filter(String string)`
filter and/of modify a string

### Methods inherited from class org.apache.tools.ant.filters.TokenFilter.ChainableReaderFilter

`chain, setByLine`

### Methods inherited from class org.apache.tools.ant.ProjectComponent

`clone, getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`

### Methods inherited from class java.lang.Object

`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### UniqFilter

public UniqFilter()

## Method Details

### filter

public String filter(String string)
Description copied from interface: `TokenFilter.Filter`
filter and/of modify a string

Parameters:
  `string` - the string to filter
Returns:
  the modified string or null if the string did not pass the filter