Package utils

Class RandomStringGenerator

java.lang.Object

utils.RandomStringGenerator

public final class RandomStringGenerator
extends Object

Utility class for generating random alphanumeric strings. Includes functionality to generate both general and unique strings. Note: Uniqueness is maintained in-memory for the life of the JVM.

Method Summary

Modifier and Type	Method	Description
static void	clearGeneratedForTests()	Test helper: clears the uniqueness set.
static String	generateRandomString(int length)	Generates a random alphanumeric string of the specified length.
static String	generateUniqueRandomString(int length)	Generates a unique random alphanumeric string of the specified length.

Methods inherited from class java.lang.Object

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

Method Details

generateRandomString

public static String generateRandomString(int length)

Generates a random alphanumeric string of the specified length. Pure function: no global side effects.

Parameters:

length - non-negative length

Returns:

random string

Throws:

IllegalArgumentException - if length is negative

generateUniqueRandomString

public static String generateUniqueRandomString(int length)

Generates a unique random alphanumeric string of the specified length. Retries until a value is inserted into the concurrent set.

clearGeneratedForTests

public static void clearGeneratedForTests()

Test helper: clears the uniqueness set. Only use from tests to avoid unbounded growth across suites.