randomprimesearch.java

Java5.0 Tiger 程序员高手秘笈一书的源代码

package com.oreilly.tiger.ch10;

import java.math.BigInteger;
import java.security.SecureRandom;
import java.util.Random;
import java.util.concurrent.Callable;


public class RandomPrimeSearch implements Callable<BigInteger> {

  private static final Random prng = new SecureRandom();
  private int bitSize;
 
  public RandomPrimeSearch(int bitSize) {
    this.bitSize = bitSize;
  }

  public BigInteger call() {
    return BigInteger.probablePrime(bitSize, prng);
  }
}