RandomExtensions (randomizer-core 6.1 API)

java.lang.Object
- de.alpharogroup.random.RandomExtensions

```
public final class RandomExtensions
extends Object
```
Utility class for producing random data. Existing name conventions: If the method starts with random* than it returns a primitive data type. If the method starts with getRandom* than it returns an object.

Version:

1.1

Author:

Asterios Raptis

Constructor Summary

Constructors
Constructor and Description

RandomExtensions()

Constructors
Constructor and Description
`RandomExtensions()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static BigDecimal`	`getRandomBigDecimal(int afterComma, int beforeComma)` The Method getRandomBigDecimal(int,int) gets an random BigDecimal.
`static Byte`	`getRandomByte()` The Method getRandomByte() selects a random Byte object.
`static Byte[]`	`getRandomByteArray(int length)` The Method getRandomByteArray(int) generates a random Byte array.
`static <T> T`	`getRandomEntry(List<T> list)` Returns a random entry from the given List.
`static <K,V> Object`	`getRandomEntry(Map<K,V> map)` Returns a random entry from the given map.
`static <T extends Enum<?>> T`	`getRandomEnumFromClass(Class<T> clazz)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnumFromClassname(String classname)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnumFromEnumValues(T[] values)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnumFromObject(T obj)` Gets the random enum.
`static Float`	`getRandomFloat(int afterComma, int beforeComma)` The Method getRandomFloat(int,int) gets an random float.
`static String`	`getRandomHexString(int numberOfCharacters)` Generates a random hexadecimal `String`
`static <T> int`	`getRandomIndex(Collection<T> list)` Returns a random index from the given List.
`static <K,V> Object`	`getRandomKey(Map<K,V> map)` Returns a random key from the given map.
`static String`	`getRandomNumericString()` Generates a random numeric string.
`static String`	`getRandomNumericString(int length)` The Method getRandomNumericString(int) produces a random Number to the specified length.
`static byte[]`	`getRandomPrimitiveByteArray(int length)` The Method getRandomPrimitiveByteArray(int) generates a random byte array.
`static byte[]`	`getRandomSalt(int length, Charset charset)` Gets the random salt.
`static String`	`getRandomString()` Generates a random string with a length between 3 and 25
`static String`	`getRandomString(int length)` Generates a random string.
`static String`	`getRandomString(int start, int end)` Generates a random string with a length between the given start and end
`static String`	`getRandomString(String[] array)` The Method randomString(String []) a random String from the Array For example: The Stringarray test as argument.
`static String`	`getRandomString(String chars, int length)` The Method randomString(String, int) makes an random String from the given String and to the spezified length.
`static SecureRandom`	`getSecureRandom()` Gets the secure random.
`static int`	`newRandomPixel()` Generates a random int for use with pixel.
`static int`	`newRandomPixel(int red, int green, int blue, int alpha)` Generates a random int for use with pixel.
`static byte[]`	`newSalt()` Factory method for create a new random salt.
`static BigDecimal`	`randomBigDecimal()` Generates a random `BigDecimal`
`static BigInteger`	`randomBigInteger()` Generates a random `BigInteger`
`static boolean`	`randomBoolean()` Returns a random boolean.
`static byte`	`randomByte()` The Method randomByte() selects a random byte.
`static byte[]`	`randomByteArray(int length)` The Method randomByteArray(int) generates a random byte array.
`static char`	`randomChar()` Returns a random char.
`static char`	`randomChar(String string)` The Method randomChar(String) selects a random char from the given String.
`static double`	`randomDouble()` The Method randomDouble() gets a random double
`static double`	`randomDouble(double range)` The Method randomDouble(double) gets an double to the spezified range.
`static double`	`randomDoubleBetween(double start, double end)` Gets the random double between the range from start and end.
`static double`	`randomDoubleBetween(double start, double end, String pattern)` Gets the random double between the range from start and end in the given pattern.
`static float`	`randomFloat()` Generates a random float between the range 0.0-9.9.
`static float`	`randomFloat(float range)` The Method randomFloat(float) gets an float to the spezified range.
`static float`	`randomFloat(int afterComma, int beforeComma)` The Method getRandomFloat(int,int) gets an random float.
`static float`	`randomFloatBetween(float start, float end)` Gets the random float between the range from start and end.
`static float`	`randomFloatBetween(float start, float end, String pattern)` Gets the random float between the range from start and end in the given pattern.
`static int`	`randomInt()` The Method randomInt() gets an int between the range 0-9.
`static int`	`randomInt(int range)` The Method randomInt(int) gets an int to the spezified range.
`static int`	`randomIntBetween(int start, int end)` Returns a random int between the range from start and end.
`static int`	`randomIntBetween(int start, int end, boolean includeMin, boolean includeMax)` Returns a random int between the range from start and end.
`static long`	`randomLong()` Gets a random long
`static long`	`randomLong(long range)` The Method randomLong(long) gets an long to the spezified range.
`static long`	`randomLongBetween(long start, long end)` Returns a random long between the range from start and end.
`static BigInteger`	`randomSerialNumber()` Returns a random serial number that can be used for a serial number.
`static short`	`randomShort()` Returns a random short
`static String`	`randomToken()` Returns a random token for use in web services.
`static UUID`	`randomUUID()` Factory method for create a new random `UUID`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RandomExtensions
```
public RandomExtensions()
```
- Method Detail
  - randomLong
```
public static long randomLong()
```
    Gets a random long
    
    Returns:
    
    a random long
  - randomLong
```
public static long randomLong(long range)
```
    The Method randomLong(long) gets an long to the spezified range. For example: if you put range to 10 the random int is between 0-9.
    
    Parameters:
    
    range - the range
    
    Returns:
    
    an long not greater then the range.
  - randomLongBetween
```
public static long randomLongBetween(long start,
                                     long end)
```
    Returns a random long between the range from start and end.
    
    Parameters:
    
    start - The long from where the range starts.
    
    end - The long from where the range ends.
    
    Returns:
    
    A random long between the range from start and end.
  - randomFloat
```
public static float randomFloat()
```
    Generates a random float between the range 0.0-9.9.
    
    Returns:
    
    the generated random float between the range 0.0-9.9.
  - getSecureRandom
```
public static SecureRandom getSecureRandom()
```
    Gets the secure random.
    
    Returns:
    
    the secure random
  - newRandomPixel
```
public static int newRandomPixel()
```
    Generates a random int for use with pixel.
    
    Returns:
    
    a random int for use with pixel.
  - newRandomPixel
```
public static int newRandomPixel(int red,
                                 int green,
                                 int blue,
                                 int alpha)
```
    Generates a random int for use with pixel.
    
    Parameters:
    
    red - The red value.
    
    green - The green value.
    
    blue - The blue value.
    
    alpha - The alpha value.
    
    Returns:
    
    a random int for use with pixel.
  - getRandomBigDecimal
```
public static BigDecimal getRandomBigDecimal(int afterComma,
                                             int beforeComma)
```
    The Method getRandomBigDecimal(int,int) gets an random BigDecimal.
    
    Parameters:
    
    afterComma - How many decimal places after the comma.
    
    beforeComma - How many decimal places before the comma.
    
    Returns:
    
    The produced BigDecimal.
  - getRandomByte
```
public static Byte getRandomByte()
```
    The Method getRandomByte() selects a random Byte object.
    
    Returns:
    
    The random Byte object.
  - getRandomByteArray
```
public static Byte[] getRandomByteArray(int length)
```
    The Method getRandomByteArray(int) generates a random Byte array.
    
    Parameters:
    
    length - the length.
    
    Returns:
    
    the Byte[]
  - getRandomEntry
```
public static <T> T getRandomEntry(List<T> list)
```
    Returns a random entry from the given List.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    list - The List.
    
    Returns:
    
    Return's a random entry from the List.
  - getRandomEntry
```
public static <K,V> Object getRandomEntry(Map<K,V> map)
```
    Returns a random entry from the given map.
    
    Type Parameters:
    
    K - the key type
    
    V - the value type
    
    Parameters:
    
    map - The map.
    
    Returns:
    
    Return's a random entry from the map.
  - getRandomEnumFromClass
```
public static <T extends Enum<?>> T getRandomEnumFromClass(Class<T> clazz)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    clazz - the clazz
    
    Returns:
    
    the random enum
  - getRandomEnumFromClassname
```
public static <T extends Enum<?>> T getRandomEnumFromClassname(String classname)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    classname - the classname
    
    Returns:
    
    the random enum
  - getRandomEnumFromObject
```
public static <T extends Enum<?>> T getRandomEnumFromObject(T obj)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    obj - the obj
    
    Returns:
    
    the random enum
  - getRandomEnumFromEnumValues
```
public static <T extends Enum<?>> T getRandomEnumFromEnumValues(T[] values)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    values - the values
    
    Returns:
    
    the random enum
  - getRandomFloat
```
public static Float getRandomFloat(int afterComma,
                                   int beforeComma)
```
    The Method getRandomFloat(int,int) gets an random float.
    
    Parameters:
    
    afterComma - How many decimal places after the comma.
    
    beforeComma - How many decimal places before the comma.
    
    Returns:
    
    The produced float.
  - getRandomIndex
```
public static <T> int getRandomIndex(Collection<T> list)
```
    Returns a random index from the given List.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    list - The List.
    
    Returns:
    
    Return's a random index from the List.
  - getRandomKey
```
public static <K,V> Object getRandomKey(Map<K,V> map)
```
    Returns a random key from the given map.
    
    Type Parameters:
    
    K - the key type
    
    V - the value type
    
    Parameters:
    
    map - The map.
    
    Returns:
    
    Return's a random key from the map.
  - getRandomNumericString
```
public static String getRandomNumericString()
```
    Generates a random numeric string.
    
    Returns:
    
    the generated random numeric string.
  - getRandomNumericString
```
public static String getRandomNumericString(int length)
```
    The Method getRandomNumericString(int) produces a random Number to the specified length.
    
    Parameters:
    
    length - The length from the random number.
    
    Returns:
    
    The random number as String.
  - getRandomString
```
public static String getRandomString(int length)
```
    Generates a random string.
    
    Parameters:
    
    length - the specified length.
    
    Returns:
    
    the generated random string.
  - getRandomHexString
```
public static String getRandomHexString(int numberOfCharacters)
```
    Generates a random hexadecimal String
    
    Parameters:
    
    numberOfCharacters - the number of characters
    
    Returns:
    
    the generated random hexadecimal String
  - getRandomString
```
public static String getRandomString(String chars,
                                     int length)
```
    The Method randomString(String, int) makes an random String from the given String and to the spezified length. This can be used to produce passwords.
    
    Parameters:
    
    chars - The String to get the random chars.
    
    length - The length from the random String.
    
    Returns:
    
    The produced random String.
  - getRandomString
```
public static String getRandomString()
```
    Generates a random string with a length between 3 and 25
    
    Returns:
    
    The produced random String.
  - getRandomString
```
public static String getRandomString(int start,
                                     int end)
```
    Generates a random string with a length between the given start and end
    
    Parameters:
    
    start - the start
    
    end - the end
    
    Returns:
    
    the generated random string
  - getRandomString
```
public static String getRandomString(String[] array)
```
    The Method randomString(String []) a random String from the Array For example: The Stringarray test as argument. Possible values: "blab", "flih", "klap", "teta", "brut", "gzft", "ccp". Possible selection can be one value from the Stringarray like "blab" or "klap".
    
    Parameters:
    
    array - The array with the String to be selected.
    
    Returns:
    
    The selected String from the array.
  - randomBoolean
```
public static boolean randomBoolean()
```
    Returns a random boolean.
    
    Returns:
    
    The random boolean.
  - randomByte
```
public static byte randomByte()
```
    The Method randomByte() selects a random byte.
    
    Returns:
    
    The random byte.
  - randomByteArray
```
public static byte[] randomByteArray(int length)
```
    The Method randomByteArray(int) generates a random byte array.
    
    Parameters:
    
    length - the length.
    
    Returns:
    
    the byte[]
  - randomChar
```
public static char randomChar()
```
    Returns a random char.
    
    Returns:
    
    The generated random char.
  - randomShort
```
public static short randomShort()
```
    Returns a random short
    
    Returns:
    
    The generated random short
  - randomChar
```
public static char randomChar(String string)
```
    The Method randomChar(String) selects a random char from the given String.
    
    Parameters:
    
    string - The String from who to select the char.
    
    Returns:
    
    The selected char.
  - randomDouble
```
public static double randomDouble(double range)
```
    The Method randomDouble(double) gets an double to the spezified range. For example: if you put range to 10.0 the random int is between 0.0-9.9.
    
    Parameters:
    
    range - the range
    
    Returns:
    
    the double
  - randomDouble
```
public static double randomDouble()
```
    The Method randomDouble() gets a random double
    
    Returns:
    
    the random double
  - randomDoubleBetween
```
public static double randomDoubleBetween(double start,
                                         double end)
```
    Gets the random double between the range from start and end.
    
    Parameters:
    
    start - the start
    
    end - the end
    
    Returns:
    
    the random double between
  - randomDoubleBetween
```
public static double randomDoubleBetween(double start,
                                         double end,
                                         String pattern)
                                  throws ParseException
```
    Gets the random double between the range from start and end in the given pattern. Refer to class @see DecimalFormat.
    
    Parameters:
    
    start - the start
    
    end - the end
    
    pattern - the pattern
    
    Returns:
    
    the random double between
    
    Throws:
    
    ParseException - is thrown if the beginning of the specified string cannot be parsed
  - randomFloat
```
public static float randomFloat(float range)
```
    The Method randomFloat(float) gets an float to the spezified range. For example: if you put range to 10.0 the random int is between 0.0-9.9.
    
    Parameters:
    
    range - the range
    
    Returns:
    
    the float
  - randomFloat
```
public static float randomFloat(int afterComma,
                                int beforeComma)
```
    The Method getRandomFloat(int,int) gets an random float.
    
    Parameters:
    
    afterComma - How many decimal places after the comma.
    
    beforeComma - How many decimal places before the comma.
    
    Returns:
    
    The produced float.
  - randomFloatBetween
```
public static float randomFloatBetween(float start,
                                       float end)
```
    Gets the random float between the range from start and end.
    
    Parameters:
    
    start - the start
    
    end - the end
    
    Returns:
    
    the random float between
  - randomFloatBetween
```
public static float randomFloatBetween(float start,
                                       float end,
                                       String pattern)
                                throws ParseException
```
    Gets the random float between the range from start and end in the given pattern. Refer to class @see DecimalFormat.
    
    Parameters:
    
    start - the start
    
    end - the end
    
    pattern - the pattern
    
    Returns:
    
    the random float between
    
    Throws:
    
    ParseException - is thrown if the beginning of the specified string cannot be parsed
  - randomInt
```
public static int randomInt()
```
    The Method randomInt() gets an int between the range 0-9.
    
    Returns:
    
    an int between the range 0-9.
  - randomUUID
```
public static UUID randomUUID()
```
    Factory method for create a new random UUID
    
    Returns:
    
    the new random UUID
  - randomInt
```
public static int randomInt(int range)
```
    The Method randomInt(int) gets an int to the spezified range. For example: if you put range to 10 the random int is between 0-9.
    
    Parameters:
    
    range - The Range.
    
    Returns:
    
    an int not greater then the range.
  - randomIntBetween
```
public static int randomIntBetween(int start,
                                   int end)
```
    Returns a random int between the range from start and end.
    
    Parameters:
    
    start - The int from where the range starts.
    
    end - The int from where the range ends.
    
    Returns:
    
    A random int between the range from start and end.
  - randomIntBetween
```
public static int randomIntBetween(int start,
                                   int end,
                                   boolean includeMin,
                                   boolean includeMax)
```
    Returns a random int between the range from start and end.
    
    Parameters:
    
    start - The int from where the range starts.
    
    end - The int from where the range ends.
    
    includeMin - if true than min value is included
    
    includeMax - if true than max value is included
    
    Returns:
    
    A random int between the range from start and end.
  - randomToken
```
public static String randomToken()
```
    Returns a random token for use in web services.
    
    Returns:
    
    A random token.
  - randomSerialNumber
```
public static BigInteger randomSerialNumber()
```
    Returns a random serial number that can be used for a serial number.
    
    Returns:
    
    a random serial number as a BigInteger object.
  - getRandomPrimitiveByteArray
```
public static byte[] getRandomPrimitiveByteArray(int length)
```
    The Method getRandomPrimitiveByteArray(int) generates a random byte array.
    
    Parameters:
    
    length - the length.
    
    Returns:
    
    the byte[]
  - newSalt
```
public static byte[] newSalt()
```
    Factory method for create a new random salt.
    
    Returns:
    
    the byte[] with the new random salt.
  - getRandomSalt
```
public static byte[] getRandomSalt(int length,
                                   Charset charset)
```
    Gets the random salt.
    
    Parameters:
    
    length - the length
    
    charset - the charset
    
    Returns:
    
    the random salt
  - randomBigInteger
```
public static BigInteger randomBigInteger()
```
    Generates a random BigInteger
    
    Returns:
    
    the random BigInteger
  - randomBigDecimal
```
public static BigDecimal randomBigDecimal()
```
    Generates a random BigDecimal
    
    Returns:
    
    the random BigDecimal

Class RandomExtensions

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RandomExtensions

Method Detail

randomLong

randomLong

randomLongBetween

randomFloat

getSecureRandom

newRandomPixel

newRandomPixel

getRandomBigDecimal

getRandomByte

getRandomByteArray

getRandomEntry

getRandomEntry

getRandomEnumFromClass

getRandomEnumFromClassname

getRandomEnumFromObject

getRandomEnumFromEnumValues

getRandomFloat

getRandomIndex

getRandomKey

getRandomNumericString

getRandomNumericString

getRandomString

getRandomHexString

getRandomString

getRandomString

getRandomString

getRandomString

randomBoolean

randomByte

randomByteArray

randomChar

randomShort

randomChar

randomDouble

randomDouble

randomDoubleBetween

randomDoubleBetween

randomFloat

randomFloat

randomFloatBetween

randomFloatBetween

randomInt

randomUUID

randomInt

randomIntBetween

randomIntBetween

randomToken

randomSerialNumber

getRandomPrimitiveByteArray

newSalt

getRandomSalt

randomBigInteger

randomBigDecimal