RandomIdGenerator

java.lang.Object

org.cryptacular.generator.RandomIdGenerator

All Implemented Interfaces:: IdGenerator

public class RandomIdGenerator extends Object implements IdGenerator

Generates random identifiers with an alphanumeric character set by default.

Field Summary

Fields

Modifier and Type

Field

Description

private final String

charset

Identifier character set.

static final String

DEFAULT_CHARSET

Default character set.

private final int

length

Size of generated identifiers.

private static final int

MAX_ID_LENGTH

Maximum length of ID to generate in bytes.

private final SecureRandom

secureRandom

Source of randomness.
Constructor Summary

Constructors

Constructor

Description

RandomIdGenerator(int length)

Creates a new instance with the default character set.

RandomIdGenerator(int length, String charset)

Creates a new instance with a defined character set.
Method Summary

Modifier and Type

Method

Description

String

generate()

Generates a random identifier.

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

Field Details
- DEFAULT_CHARSET
  
  public static final String DEFAULT_CHARSET
  
  Default character set.
  See Also:
  
  Constant Field Values
- MAX_ID_LENGTH
  
  private static final int MAX_ID_LENGTH
  
  Maximum length of ID to generate in bytes.
- length
  
  private final int length
  
  Size of generated identifiers.
- charset
  
  private final String charset
  
  Identifier character set.
- secureRandom
  
  private final SecureRandom secureRandom
  
  Source of randomness.
Constructor Details
- RandomIdGenerator
  
  public RandomIdGenerator(int length)
  
  Creates a new instance with the default character set.
  
  Parameters:
  
  length - Number of characters in generated identifiers.
- RandomIdGenerator
  
  public RandomIdGenerator(int length, String charset)
  
  Creates a new instance with a defined character set.
  
  Parameters:
  
  length - Number of characters in generated identifiers.
  
  charset - Character set.
Method Details
- generate
  
  public String generate()
  
  Description copied from interface: IdGenerator
  
  Generates a random identifier.
  
  Specified by:
  
  generate in interface IdGenerator
  
  Returns:
  
  Random identifier.