Package com.github.ushiosan23.jvm.system

Class Rand

java.lang.Object

com.github.ushiosan23.jvm.system.Rand

public final class Rand
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static int[]	RAND_ALL_SYMBOLS	Data range for all valid symbols
static int[]	RAND_ALPHANUMERIC	Data range for alphanumeric letters
static int[]	RAND_LETTERS	Data range for all letters
static int[]	RAND_NUMBERS	Data range for all numbers

Method Summary

Modifier and Type	Method	Description
static @NotNull String	getRandomString()	Generate a random string with an adjustable size.
static @NotNull String	getRandomString(int size)	Generate a random string with an adjustable size.
static @NotNull String	getRandomString(int size, int @NotNull [] charLimits)	Generate a random string with an adjustable size.
static Random	getSystemRandom()	Return a default system random object.
static Random	getSystemRandom(long seed)	Return a default system random object

Methods inherited from class java.lang.Object

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

Field Detail

RAND_LETTERS

public static final int[] RAND_LETTERS

Data range for all letters

RAND_NUMBERS

public static final int[] RAND_NUMBERS

Data range for all numbers

RAND_ALPHANUMERIC

public static final int[] RAND_ALPHANUMERIC

Data range for alphanumeric letters

RAND_ALL_SYMBOLS

public static final int[] RAND_ALL_SYMBOLS

Data range for all valid symbols

Method Detail

getSystemRandom

public static Random getSystemRandom(long seed)

Return a default system random object

Parameters:

seed - Seed for the "Random" item. It is recommended to use the default seed and only apply it for test use.

Returns:

Returns a default system random

See Also:

getSystemRandom()

getSystemRandom

public static Random getSystemRandom()

Return a default system random object. This method applies the seed due to time. It is recommended for use in production.

Returns:

Returns a default system random

getRandomString

@NotNull
public static @NotNull String getRandomString(int size,
                                              int @NotNull [] charLimits)

Generate a random string with an adjustable size.

Parameters:

size - String size

charLimits - Limit in which the characters will be generated.

Returns:

Returns a random string

See Also:

RAND_ALL_SYMBOLS, RAND_ALPHANUMERIC, RAND_LETTERS, RAND_NUMBERS

getRandomString

@NotNull
public static @NotNull String getRandomString(int size)

Generate a random string with an adjustable size. By default, this method use RAND_ALL_SYMBOLS limits

Parameters:

size - String size

Returns:

Returns a random string

See Also:

RAND_ALL_SYMBOLS, RAND_ALPHANUMERIC, RAND_LETTERS, RAND_NUMBERS

getRandomString

@NotNull
public static @NotNull String getRandomString()

Generate a random string with an adjustable size. By default, this method use RAND_ALL_SYMBOLS limits and size is 18

Returns:

Returns a random string

See Also:

RAND_ALL_SYMBOLS, RAND_ALPHANUMERIC, RAND_LETTERS, RAND_NUMBERS