org.apache.commons.math3.optim

## Class PointValuePair

- java.lang.Object
- - org.apache.commons.math3.util.Pair<double[],Double>
  - - org.apache.commons.math3.optim.PointValuePair

- All Implemented Interfaces:
    Serializable

      public class PointValuePair
      extends Pair<double[],Double>
      implements Serializable

  This class holds a point and the value of an objective function at that point.
  Since:
    3.0
  Version:
    $Id: PointValuePair.java 1435539 2013-01-19 13:27:24Z tn $
  See Also:
    `PointVectorValuePair`, `MultivariateFunction`, Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `PointValuePair(double[] point, double value)` Builds a point/objective function value pair.
    `PointValuePair(double[] point, double value, boolean copyArray)` Builds a point/objective function value pair.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `double[]` | `getPoint()` Gets the point.
    `double[]` | `getPointRef()` Gets a reference to the point.

    - ### Methods inherited from class org.apache.commons.math3.util.Pair

      `create, equals, getFirst, getKey, getSecond, getValue, hashCode, toString`

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

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### PointValuePair

          public PointValuePair(double[] point,
                        double value)

      Builds a point/objective function value pair.
      Parameters:
        `point` - Point coordinates. This instance will store a copy of the array, not the array passed as argument.
        `value` - Value of the objective function at the point.

    - #### PointValuePair

          public PointValuePair(double[] point,
                        double value,
                        boolean copyArray)

      Builds a point/objective function value pair.
      Parameters:
        `point` - Point coordinates.
        `value` - Value of the objective function at the point.
        `copyArray` - if `true`, the input array will be copied, otherwise it will be referenced.

  - ### Method Detail

    - #### getPoint

          public double[] getPoint()

      Gets the point.
      Returns:
        a copy of the stored point.

    - #### getPointRef

          public double[] getPointRef()

      Gets a reference to the point.
      Returns:
        a reference to the internal array storing the point.

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