Package org.opensourcephysics.numerics

Class DoubleArray

java.lang.Object
org.opensourcephysics.numerics.DoubleArray
public class DoubleArray extends Object
DoubleArray stores an array of doubles as a string and as an array.

  • Field Details

    • NumberFormatError

      public static int NumberFormatError

    • ArrayIndexOutOfBoundsError

      public static int ArrayIndexOutOfBoundsError

    • format

      protected DecimalFormat format

    • formatExp

      protected DecimalFormat formatExp

    • array

      protected double[] array

    • defaultString

      protected String defaultString

    • defaultArray

      protected double[] defaultArray

    • errorcode

      protected int errorcode

  • Constructor Details

    • DoubleArray

      public DoubleArray(int n)
      Creates a DoubleArray of the given length with all elements set to zero. The length of the arry cannot be changed.
      Parameters:
      n -

    • DoubleArray

      public DoubleArray(double[] array)
      Creates a DoubleArray of the given length with all elements set to zero. The length of the array cannot be changed.
      Parameters:
      array -

    • DoubleArray

      public DoubleArray(String str) throws NumberFormatException
      Creates an array with the given string being the default string. The given string determines the length of the array. This lenght cannot be changed.
      Parameters:
      str -
      Throws:
      NumberFormatException

  • Method Details

    • setDecimalFormat

      public void setDecimalFormat(String pattern)
      Creates a DecimalFormat for printing array elements using the given pattern and the symbols for the default locale.
      See Also:

    • getDefault

      public String getDefault()
      Gets the default array. The default is used if the input string is not valid due to a number format exception or an array length exception.
      Returns:
      string

    • toString

      public String toString()
      Converts the array to a comma delimited string enclosed in braces.
      Overrides:
      toString in class Object
      Returns:
      string

    • getError

      public int getError()
      Gets the error code
      Returns:

    • getArray

      public double[] getArray(String str)
      Converts the string to an array and returns the array. If the conversion fails, the error code is set and default array is returned.
      Returns:
      double[] the converted array

    • getArray

      public double[] getArray()
      Gets the array of doubles.
      Returns:

    • set

      public boolean set(String str)
      Sets the array to the given string.
      Returns:
      true if successful; false otherwise

    • setDefaultArray

      public void setDefaultArray(double[] array)

    • toDouble

      protected double[] toDouble(String str) throws ArrayIndexOutOfBoundsException
      Converts a comma delimited string enclosed in braces to an array. v={1.5, 2.0, -3.2} would returns an array with componets (1.5,2.0,-3.2).
      Parameters:
      str -
      Returns:
      Throws:
      ArrayIndexOutOfBoundsException

    • getLoader

      public static XML.ObjectLoader getLoader()
      Returns an XML.ObjectLoader to save and load object data.
      Returns:
      the XML.ObjectLoader