Package org.apache.tools.ant.types.selectors.modifiedselector

## Class LastModifiedAlgorithm

- java.lang.Object
- - org.apache.tools.ant.types.selectors.modifiedselector.LastModifiedAlgorithm

All Implemented Interfaces:
  `Algorithm`

    public class LastModifiedAlgorithm
    extends java.lang.Object
    implements Algorithm

Computes a 'timestamp' of file based on the lastModified time of that file.

Since:
  Ant 1.10.6 and 1.9.14
Version:
  2018-07-25

### Constructor Summary

Constructors
`LastModifiedAlgorithm()`

### Method Summary

All Methods Instance Methods Concrete Methods
`java.lang.String` `getValue​(java.io.File file)` Computes a 'timestamp' for a file based on the lastModified time.
`boolean` `isValid()` This algorithm doesn't need any configuration.

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

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

### Constructor Detail

#### LastModifiedAlgorithm

    public LastModifiedAlgorithm()

### Method Detail

#### isValid

    public boolean isValid()

This algorithm doesn't need any configuration. Therefore it's always valid.

Specified by:
  `isValid` in interface `Algorithm`
Returns:
  always true

#### getValue

    public java.lang.String getValue​(java.io.File file)

Computes a 'timestamp' for a file based on the lastModified time.

Specified by:
  `getValue` in interface `Algorithm`
Parameters:
  `file` - The file for which the value should be computed
Returns:
  the timestamp or null if the timestamp couldn't be computed