ReverseComparator

java.lang.Object
- org.apache.commons.io.comparator.AbstractFileComparator
- - org.apache.commons.io.comparator.ReverseComparator

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<java.io.File>
```
class ReverseComparator
extends AbstractFileComparator
implements java.io.Serializable
```
Reverses the result of comparing two objects using the delegate Comparator.

Since:

1.4

Field Summary

Fields
Modifier and Type Field Description

private java.util.Comparator<java.io.File> delegate

private static long serialVersionUID

Constructor Summary

Constructors
Constructor Description

ReverseComparator(java.util.Comparator<java.io.File> delegate)
Construct an instance with the specified delegate Comparator.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compare(java.io.File file1, java.io.File file2)`	Compare using the delegate Comparator, but reversing the result.
`java.lang.String`	`toString()`	String representation of this file comparator.

Methods inherited from class org.apache.commons.io.comparator.AbstractFileComparator
sort, sort

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

Methods inherited from interface java.util.Comparator
equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
  - delegate
```
private final java.util.Comparator<java.io.File> delegate
```
- Constructor Detail
  - ReverseComparator
```
public ReverseComparator(java.util.Comparator<java.io.File> delegate)
```
    Construct an instance with the specified delegate Comparator.
    
    Parameters:
    
    delegate - The comparator to delegate to
- Method Detail
  - compare
```
public int compare(java.io.File file1,
                   java.io.File file2)
```
    Compare using the delegate Comparator, but reversing the result.
    
    Specified by:
    
    compare in interface java.util.Comparator<java.io.File>
    
    Parameters:
    
    file1 - The first file to compare
    
    file2 - The second file to compare
    
    Returns:
    
    the result from the delegate Comparator.compare(Object, Object) reversing the value (i.e. positive becomes negative and vice versa)
  - toString
```
public java.lang.String toString()
```
    String representation of this file comparator.
    
    Overrides:
    
    toString in class AbstractFileComparator
    
    Returns:
    
    String representation of this file comparator