utils

Class Utils

java.lang.Object

utils.Utils

public final class Utils
extends java.lang.Object

class for utilities

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.Object	bytesToObject(byte[] serializedObject) Deserializes the given byte representation of an object and returns the corresponding object.
static java.lang.String	changeExtension(java.lang.String originalName, java.lang.String newExtension) changes extension to new extension example: x = changeExtension("data.txt", ".java") will assign "data.java" to x.
static void	copyInto(double[][][] from, double[][][] to)
static double[][][]	copyOf(double[][][] array, int newLength1, int newLength2, int newLength3) deep copy arrays and cut/pad to size
static double[][]	copyOf(double[][] array, int newLength1, int newLength2) deep copy arrays and cut/pad to size
static <T extends java.io.Serializable> T	deepCopy(T object) Creates a deep copy of a given object.
static double[]	fill(int size, double value)
static <T> java.util.List<T>	flatten(T type, java.util.Collection<?> collection) Creates a flat copy of a (deep) collection hierarchy.
static java.util.Set<java.lang.reflect.Field>	getDeclaredFields(java.lang.Class<?> clazz) Returns all the fields of a given class including the fields of all superclasses.
static java.util.Set<java.lang.reflect.Method>	getDeclaredMethods(java.lang.Class<?> clazz) Returns all the fields of a given class including the fields of all superclasses.
static java.lang.reflect.Field	getField(java.lang.Class<?> clazz, java.lang.String fieldName) Returns the field of a given class also searching for the field in superclasses.
static java.lang.reflect.Method	getMethod(java.lang.Class<?> clazz, java.lang.String methodName) Returns the method of a given class also searching for the method in superclasses.
static byte[]	objectToBytes(java.io.Serializable object) Serializes the given object and returns a byte representation.
static double[]	randomArray(int size, java.util.Random random, double min, double max)
static void	randomFill(double[][][] array, java.util.Random random, double min, double max)
static void	randomFill(double[][] array, java.util.Random random, double min, double max)
static void	randomFill(double[] array, java.util.Random random, double min, double max)
static java.util.List<java.lang.Double>	randomList(int size, java.util.Random random, double min, double max)
static <T extends java.lang.Number> T	sum(java.lang.Iterable<T> iterable)

Methods inherited from class java.lang.Object

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

Method Detail

sum

public static <T extends java.lang.Number> T sum(java.lang.Iterable<T> iterable)

copyOf

public static double[][] copyOf(double[][] array,
                int newLength1,
                int newLength2)

deep copy arrays and cut/pad to size

See Also:

Arrays.copyOf(double[], int)

copyOf

public static double[][][] copyOf(double[][][] array,
                  int newLength1,
                  int newLength2,
                  int newLength3)

deep copy arrays and cut/pad to size

See Also:

Arrays.copyOf(double[], int)

copyInto

public static void copyInto(double[][][] from,
            double[][][] to)

fill

public static double[] fill(int size,
            double value)

randomArray

public static double[] randomArray(int size,
                   java.util.Random random,
                   double min,
                   double max)

randomList

public static java.util.List<java.lang.Double> randomList(int size,
                                          java.util.Random random,
                                          double min,
                                          double max)

randomFill

public static void randomFill(double[] array,
              java.util.Random random,
              double min,
              double max)

randomFill

public static void randomFill(double[][] array,
              java.util.Random random,
              double min,
              double max)

randomFill

public static void randomFill(double[][][] array,
              java.util.Random random,
              double min,
              double max)

changeExtension

public static java.lang.String changeExtension(java.lang.String originalName,
                               java.lang.String newExtension)

changes extension to new extension example: x = changeExtension("data.txt", ".java") will assign "data.java" to x.

Parameters:

originalName -

newExtension -

Returns:

filename

getField

public static java.lang.reflect.Field getField(java.lang.Class<?> clazz,
                               java.lang.String fieldName)
                                        throws java.lang.NoSuchFieldException

Returns the field of a given class also searching for the field in superclasses.

Parameters:

clazz -

fieldName -

Returns:

field

Throws:

java.lang.NoSuchFieldException

See Also:

Class.getField(String), Class.getDeclaredField(String)

getMethod

public static java.lang.reflect.Method getMethod(java.lang.Class<?> clazz,
                                 java.lang.String methodName)
                                          throws java.lang.NoSuchMethodException

Returns the method of a given class also searching for the method in superclasses.

Parameters:

clazz -

methodName -

Returns:

field

Throws:

java.lang.NoSuchFieldException

java.lang.NoSuchMethodException

See Also:

Class.getField(String), Class.getDeclaredField(String)

getDeclaredFields

public static java.util.Set<java.lang.reflect.Field> getDeclaredFields(java.lang.Class<?> clazz)

Returns all the fields of a given class including the fields of all superclasses.

Parameters:

clazz -

Returns:

fields

See Also:

Class.getFields(), Class.getDeclaredFields()

getDeclaredMethods

public static java.util.Set<java.lang.reflect.Method> getDeclaredMethods(java.lang.Class<?> clazz)

Returns all the fields of a given class including the fields of all superclasses.

Parameters:

clazz -

Returns:

methods

See Also:

Class.getFields(), Class.getDeclaredFields()

objectToBytes

public static byte[] objectToBytes(java.io.Serializable object)

Serializes the given object and returns a byte representation.

Parameters:

object -

Returns:

byte array

bytesToObject

public static java.lang.Object bytesToObject(byte[] serializedObject)

Deserializes the given byte representation of an object and returns the corresponding object.

Parameters:

serializedObject -

Returns:

object

deepCopy

public static <T extends java.io.Serializable> T deepCopy(T object)

Creates a deep copy of a given object. The object has to be serializable and therefore has to implement the interface Serializable. The copy is created using ObjectInputStream and ObjectOutputStream.

Type Parameters:

T -

Parameters:

object -

Returns:

object

flatten

public static <T> java.util.List<T> flatten(T type,
                            java.util.Collection<?> collection)

Creates a flat copy of a (deep) collection hierarchy.