coreservlets
Class Primes

java.lang.Object
  |
  +--coreservlets.Primes

public class Primes

extends Object

A few utilities to generate a large random BigInteger, and find the next prime number above a given BigInteger.

Taken from Core Servlets and JavaServer Pages from Prentice Hall and Sun Microsystems Press, http://www.coreservlets.com/. © 2000 Marty Hall; may be freely used or adapted.

Constructor Summary

Primes()

Method Summary

static void	main(String[] args) Simple command-line program to test.
static BigInteger	nextPrime(BigInteger start)
static BigInteger	random(int numDigits)

Methods inherited from class java.lang.Object

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

Constructor Detail

Primes

public Primes()

Method Detail

nextPrime

public static BigInteger nextPrime(BigInteger start)

random

public static BigInteger random(int numDigits)

main

public static void main(String[] args)

Simple command-line program to test. Enter number of digits, and it picks a random number of that length and then prints the first 50 prime numbers above that.