de.erichseifert.gral.util

Class DataUtils

java.lang.Object

de.erichseifert.gral.util.DataUtils

public abstract class DataUtils
extends java.lang.Object

Abstract class that contains utility functions for creating data structures and for working with data sources and values.

Method Summary

Modifier and Type	Method and Description
static double	getValueOrDefault(java.lang.Number n, double defaultValue) Returns the double value of the Number object or the specified default value if the object is null.
static <K,V> java.util.Map<K,V>	map(K[] keys, V[] values) Creates a mapping from two arrays, one with keys, one with values.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

map

public static <K,V> java.util.Map<K,V> map(K[] keys,
                                           V[] values)

Creates a mapping from two arrays, one with keys, one with values.

Type Parameters:

K - Data type of the keys.

V - Data type of the values.

Parameters:

keys - Array containing the keys.

values - Array containing the values.

Returns:

Map with keys and values from the specified arrays.

getValueOrDefault

public static double getValueOrDefault(java.lang.Number n,
                                       double defaultValue)

Returns the double value of the Number object or the specified default value if the object is null.

Parameters:

n - Number object.

defaultValue - Default value.

Returns:

Double value of the Number object or the default value if the object is null