org.apache.commons.math3.genetics

## Class FixedElapsedTime

- java.lang.Object
- - org.apache.commons.math3.genetics.FixedElapsedTime

All Implemented Interfaces:
  StoppingCondition

    public class FixedElapsedTime
    extends Object
    implements StoppingCondition

Stops after a fixed amount of time has elapsed.

The first time `isSatisfied(Population)` is invoked, the end time of the evolution is determined based on the provided `maxTime` value. Once the elapsed time reaches the configured `maxTime` value, `isSatisfied(Population)` returns true.

Since:
  3.1
Version:
  $Id: FixedElapsedTime.java 1385297 2012-09-16 16:05:57Z tn $

### Field Summary

Fields
`private long` `endTime` The predetermined termination time (stopping condition).
`private long` `maxTimePeriod` Maximum allowed time period (in nanoseconds).

### Constructor Summary

Constructors
Constructor and Description
`FixedElapsedTime(long maxTime)` Create a new `FixedElapsedTime` instance.
`FixedElapsedTime(long maxTime, TimeUnit unit)` Create a new `FixedElapsedTime` instance.

### Method Summary

Methods
`boolean` `isSatisfied(Population population)` Determine whether or not the maximum allowed time has passed.

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

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

### Field Detail

#### maxTimePeriod

    private final long maxTimePeriod

Maximum allowed time period (in nanoseconds).

#### endTime

    private long endTime

The predetermined termination time (stopping condition).

### Constructor Detail

#### FixedElapsedTime

    public FixedElapsedTime(long maxTime)
                     throws NumberIsTooSmallException

Create a new `FixedElapsedTime` instance.

Parameters:
  `maxTime` - maximum number of seconds generations are allowed to evolve
Throws:
  `NumberIsTooSmallException` - if the provided time is < 0

#### FixedElapsedTime

    public FixedElapsedTime(long maxTime,
                    TimeUnit unit)
                     throws NumberIsTooSmallException

Create a new `FixedElapsedTime` instance.

Parameters:
  `maxTime` - maximum time generations are allowed to evolve
  `unit` - `TimeUnit` of the maxTime argument
Throws:
  `NumberIsTooSmallException` - if the provided time is < 0

### Method Detail

#### isSatisfied

    public boolean isSatisfied(Population population)

Determine whether or not the maximum allowed time has passed. The termination time is determined after the first generation.

Specified by:
  `isSatisfied` in interface `StoppingCondition`
Parameters:
  `population` - ignored (no impact on result)
Returns:
  `true` IFF the maximum allowed time period has elapsed