net.lenni0451.commons

Class RandomUtils

java.lang.Object

net.lenni0451.commons.RandomUtils

public class RandomUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
RandomUtils()

Method Summary

Modifier and Type	Method and Description
static byte[]	randomBytes(int length) Generate random bytes with the given length.
static double	randomDouble(double min, double max) Generate a random double between the given min and max.
static <T> T	randomElement(java.util.List<T> list) Get a random element from the given list.
static <T> T	randomElement(T[] array) Get a random element from the given array.
static int	randomInt(int min, int max) Generate a random integer between the given min and max.
static java.lang.String	randomizeCase(java.lang.String s) Randomize the case of the given string.
static long	randomLong(long min, long max) Generate a random long between the given min and max.
static java.lang.String	randomString(int length) Generate a random string with the given length.
static java.lang.String	randomString(int length, java.lang.String charset) Generate a random string with the given length and charset.

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

randomString

public static java.lang.String randomString(int length)

Generate a random string with the given length.
The charset is: a-z, A-Z, 0-9, _

Parameters:

length - The length of the string

Returns:

The generated string

randomString

public static java.lang.String randomString(int length,
                                            java.lang.String charset)

Generate a random string with the given length and charset.

Parameters:

length - The length of the string

charset - The charset to use

Returns:

The generated string

randomizeCase

public static java.lang.String randomizeCase(java.lang.String s)

Randomize the case of the given string.

Parameters:

s - The string to randomize

Returns:

The randomized string

randomInt

public static int randomInt(int min,
                            int max)

Generate a random integer between the given min and max.

Parameters:

min - The minimum value

max - The maximum value

Returns:

The generated integer

randomLong

public static long randomLong(long min,
                              long max)

Generate a random long between the given min and max.

Parameters:

min - The minimum value

max - The maximum value

Returns:

The generated long

randomDouble

public static double randomDouble(double min,
                                  double max)

Generate a random double between the given min and max.

Parameters:

min - The minimum value

max - The maximum value

Returns:

The generated double

randomBytes

public static byte[] randomBytes(int length)

Generate random bytes with the given length.

Parameters:

length - The length of the bytes

Returns:

The generated bytes

randomElement

@Nullable
public static <T> T randomElement(T[] array)

Get a random element from the given array.

Type Parameters:

T - The type of the array

Parameters:

array - The array to get the element from

Returns:

The random element or null if the array is empty

randomElement

@Nullable
public static <T> T randomElement(java.util.List<T> list)

Get a random element from the given list.

Type Parameters:

T - The type of the list

Parameters:

list - The list to get the element from

Returns:

The random element or null if the list is empty