RandomUtils (randomizer 4.0.0 API)

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

```
public class RandomUtils
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

RandomUtils()

Constructors
Constructor and Description
`RandomUtils()`

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`	`getRandomEnum(Class<T> clazz)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnum(String classname)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnum(T obj)` Gets the random enum.
`static <T extends Enum<?>> T`	`getRandomEnum(T[] values)` Gets the random enum.
`static Float`	`getRandomFloat(int afterComma, int beforeComma)` The Method getRandomFloat(int,int) gets an random float.
`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 String`	`getRandomString(int length)` Generates a random string.
`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 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(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(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.

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

- Constructor Detail
  - RandomUtils
```
public RandomUtils()
```
- Method Detail
  - 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.
  - getRandomEnum
```
public static <T extends Enum<?>> T getRandomEnum(Class<T> clazz)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    clazz - the clazz
    
    Returns:
    
    the random enum
  - getRandomEnum
```
public static <T extends Enum<?>> T getRandomEnum(String classname)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    classname - the classname
    
    Returns:
    
    the random enum
  - getRandomEnum
```
public static <T extends Enum<?>> T getRandomEnum(T obj)
```
    Gets the random enum.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    obj - the obj
    
    Returns:
    
    the random enum
  - getRandomEnum
```
public static <T extends Enum<?>> T getRandomEnum(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.
  - 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(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.
  - 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
  - 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)
```
    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
  - 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)
```
    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
  - randomInt
```
public static int randomInt()
```
    The Method randomInt() gets an int between the range 0-9.
    
    Returns:
    
    an int between the range 0-9.
  - 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.

Class RandomUtils

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RandomUtils

Method Detail

getRandomBigDecimal

getRandomByte

getRandomByteArray

getRandomEntry

getRandomEntry

getRandomEnum

getRandomEnum

getRandomEnum

getRandomEnum

getRandomFloat

getRandomIndex

getRandomKey

getRandomNumericString

getRandomNumericString

getRandomString

getRandomString

getRandomString

randomBoolean

randomByte

randomByteArray

randomChar

randomChar

randomDouble

randomDoubleBetween

randomDoubleBetween

randomFloat

randomFloat

randomFloatBetween

randomFloatBetween

randomInt

randomInt

randomIntBetween